TWI485927B - Multi-loop antenna module with widebeam width - Google Patents

Description

Wide beam width and wide loop antenna module

The invention relates to a multi-loop antenna module, in particular to a wide beam width and multi-loop antenna module capable of generating good antenna performance.

Traditional wireless local area networks or 802.11a/b/g/n bridge antennas are mostly exposed antenna structures. The most common form is a dipole antenna covered with a plastic or rubber sleeve. This type of antenna is usually a single-frequency 2.4 GHz or dual-band 2.4/5 GHz antenna, and its antenna body height is usually three times as high as that of a wireless broadband router or hub, and the antenna body is disposed on one side and exposed above the casing. The user needs to install the antenna first, and then adjust the receiving position of the antenna. The antenna is also vulnerable to external force damage, and takes up space and damages the appearance, especially when applied to a multi-antenna system.

In addition, when applied to a 2.4/5 GHz wireless local area network or an 802.11a/b/g/n dual-band antenna, the antenna has only a single signal feed point. The dual-frequency antenna of the typical design is a dual-frequency dipole bridge antenna structure. The antenna utilizes two radiant copper tubes, which are different from the traditional single-frequency dipole antennas and use the center conductor of the coaxial transmission line to achieve 2.4/5 GHz dual-frequency operation. However, in the case of concurrent dual-band operation, an additional diplexer circuit is required to synchronously transmit/receive 2.4 GHz and 5 GHz band signals to 2.4 GHz modules and 5 GHz modules, which not only increases the cost, but also causes Overall system power loss.

Furthermore, a dual-frequency cross-polarized dipole antenna is disclosed, which discloses a dual antenna system comprising two dual-frequency dipole antennas to generate two operating frequency bands, respectively, in the vicinity of 2.4 GHz and 5 GHz modes. . However, because the dual antennas are stacked, the overall antenna system is also in a higher profile.

In addition to the above shortcomings, common wireless broadband bridges or routers are typically installed on the ceiling and wall mount. Orientations on the table, different types of antenna radiation patterns are required at different locations. For example, the bridge antenna used in the ceiling antenna type requires inverted conical radiation; the wall-mounted bridge point requires a high directional radiation pattern; the bridge antenna lying flat on the table is Omnidirectional radiation. However, the general antenna radiation pattern can only provide a specific coverage. For example, a monopole antenna can only produce a horizontal direction omnidirectional radiation field or an elevation direction conical radiation field; a patch/microstrip antenna has a vertical The characteristics of the radiation pattern of the broadside. This means that general wireless broadband bridging or router equipment is only suitable for use in specific situations, that is, the bridging point applied to the ceiling is not suitable as a wall-mounted bridging point, obviously because the antenna radiation field is different from the direction. This will cause a communication dead angle and cause problems in reception and transmission quality.

The reason is that the inventors have felt that the above-mentioned defects can be improved, and based on the relevant experience in this field for many years, carefully observed and studied, and in conjunction with the application of the theory, a present invention which is reasonable in design and effective in improving the above-mentioned defects is proposed. .

The technical problem to be solved by the present invention is to provide a wide beam diameter wide multi-loop antenna module, which is small in size, low in height, small in isolation between antennas, good in radiation characteristics, and wide in application range (for example, can be disposed on a ceiling) On the other hand, on the wall, on the table, etc., there is no need to add a double duplexer circuit to replace the traditional exposed 2.4/5GHz dual-frequency bridge-access antenna. In addition, the multi-antenna module of the present invention can be embedded in a wireless broadband router or hub to maintain the integrity and aesthetics of the overall appearance of the product.

In order to solve the above technical problem, according to one aspect of the present invention, a wide beam width and multi-loop antenna module is provided, including: a grounding unit, a plurality of first loop units, and a plurality of second loop units. The first loop units are disposed on the outer sides of the ground unit, and each of the first loop units has at least one disposed on the ground unit. a first shorting pin, at least one first signal feeding pin spaced apart from the at least one first shorting pin by a predetermined distance and suspended above the grounding unit by a predetermined distance, and at least one suspended and perpendicular to the grounding unit a first loop radiation body connected between the at least one first shorting pin and the at least one first signal feeding pin. The second loop units are disposed around the geometric center of the ground unit and are vertically disposed on the outer sides of the ground unit, respectively, and the second loop units are symmetrically staggered with the first loop units. Each of the second loop units has at least one second shorting pin disposed on the grounding unit, at least one predetermined distance apart from the at least one second shorting pin and suspended above the grounding unit by a predetermined distance The second signal feed pin and the second at least one suspended and perpendicular to the ground unit and connected between the at least one second shorting pin and the at least one second signal feeding pin The loop radiates the body.

In order to solve the above technical problem, according to one aspect of the present invention, a wide beam width and multi-loop antenna module is provided, which is installed inside an antenna system housing, wherein the wide beam width and multi-loop antenna module The system includes: a grounding unit, a plurality of first loop units, and a plurality of second loop units. The first loop units are disposed on the outer sides of the ground unit, and each of the first loop units has at least one disposed on the ground unit. a first shorting pin, at least one first signal feeding pin spaced apart from the at least one first shorting pin by a predetermined distance and suspended above the grounding unit by a predetermined distance, and at least one suspended and perpendicular to the grounding unit a first loop radiation body connected between the at least one first shorting pin and the at least one first signal feeding pin. The second loop units are disposed around the geometric center of the ground unit and are vertically disposed on the outer sides of the ground unit, respectively, and the second loop units are symmetrically staggered with the first loop units. Each of the second loop units has at least one second shorting pin disposed on the grounding unit. And at least one second signal feeding pin spaced apart from the at least one second shorting pin by a predetermined distance and suspended above the grounding unit by a predetermined distance. And a second loop radiation body suspended between the at least one second shorting pin and the at least one second signal feeding pin, which is suspended and perpendicular to the grounding unit by a predetermined distance. Furthermore, the grounding unit, the first loop unit and the second loop unit are both wrapped inside the antenna system housing.

Therefore, for the above wide beam diameter wide multi-loop antenna module, the beneficial effects of the present invention are:

1. In the example of the present invention, the wide beam diameter wide multi-loop antenna module includes three independent first loop units (large loop size) and three independent second loop units (small back Circle size). Each of the first loop units and each of the second loop units are respectively responsible for low frequency 2.4 GHz band operation and high frequency 5 GHz band operation for the purpose of synchronous dual frequency operation. Therefore, the present invention is different from the conventional dual-frequency antenna. The conventional dual-frequency antenna has only a single signal feeding end, and an additional duplex circuit is required in the synchronous dual-frequency operation, which not only increases the cost, but also causes the loss of the overall system power.

2. In the example of the present invention, the overall height of the wide beam width and multi-loop antenna module does not exceed 15 mm to achieve the possibility of a built-in multi-bridge antenna. In other words, the wide beam width and wide loop antenna module of the present invention can be embedded in a wireless broadband router or hub to maintain the integrity and aesthetics of the overall appearance of the product.

3. In the example of the present invention, (1) controlling the distance between the first shorting pin and the first signal feeding pin of each first loop unit, and (2) controlling each second back. The distance between the second shorting pin of the coil unit and the second signal feeding pin, and (3) controlling the height of each of the first loop unit and each of the second loop unit relative to the grounding unit, a wide beam is obtained The wide-width multi-loop antenna module has good impedance matching in the 2.4 GHz and 5 GHz wireless local area network bands (defined by 2:1 VSWR or 10 dB return loss).

4. In the example of the present invention, because the first shorting pin of each first loop unit is adjacent to the second signal feeding pin of the second loop unit of different antenna operating frequencies (or each second The second shorting pin of the loop unit is adjacent to the first signal feeding pin of the first loop unit of different antenna operating frequencies), so the invention can greatly reduce every two first loop units having different antenna operating frequencies The mutual coupling with the second loop unit achieves good characteristics of isolation below -15 dB.

5. In the example of the present invention, each of the first loop units and each of the second loop units is a one-wavelength loop and is a balanced structure. ), which has the advantage of greatly suppressing the surface excitation current of the antenna ground plane (or system ground plane), so the ground plane (the grounding unit) can be regarded as a reflector here, so that the antenna radiation field of the present invention has a higher Directivity to achieve high gain antenna design.

6. In the example of the present invention, each of the first loop units and each of the second loop units are vertically placed at the edge of the ground plane (ie, the outermost side of the ground unit), the antenna The radiation field type is reflected by two orthogonal directions of the ground plane (one vertical ground plane (parallel to the antenna) and the other parallel parallel ground plane), each of the first loop units and each second back The 3dB half-power beam diameter of the circle unit in a plane perpendicular to the antenna may cover an angle above at least one quadrant on the polar coordinate (eg, each of the first loop units and each of the first The 3dB half power beam diameter of the two loop unit is greater than about 141 degrees and 155 degrees in the 2.4 and 5 GHz bands, respectively, so each first loop unit and each second loop unit has a wider beam diameter radiation. Field type.

7. When the three first loop units (operating in the 2.4 GHz band) or the three second loop units (operating in the 5 GHz band) of the wide beam width and wide loop antenna module of the present invention are operated together, three The respective independent first loop units (or three independent second loop units) will be combined into a "radiation pattern that covers a half-plane space and each antenna gain value (or power) is similar) . Thus, the wireless broadband bridging or router device incorporating the wide beam width and multi-loop antenna module of the present invention can be placed in different environments, such as ceilings, walls, tables, and the like.

8. The wide beam diameter wide multi-loop antenna module of the present invention is entirely made of sheet metal stamping or cutting, and can be formed by a single radiating metal sheet. Therefore, the present invention can effectively save manufacturing costs and processing time.

In order to further understand the technology, the means and the effect of the present invention in order to achieve the intended purpose, refer to the following detailed description of the invention and the accompanying drawings. The detailed description is to be understood as illustrative and not restrictive.

Referring to FIG. 1A to FIG. 1D, the first embodiment of the present invention provides a wide beam width and multi-loop antenna module M, which includes: a grounding unit 1, and a plurality of first loop units. 2 and a plurality of second loop units 3. In addition, the grounding unit 1, the first loop unit 2, and the second loop unit 3 may be an integrally formed sheet-like body. Of course, the first loop unit 2 and the second loop unit 3 can also be separately formed and then placed on the ground unit 1.

Wherein the first loop unit 2 and the second loop units 3 are alternately and symmetrically arranged on the ground unit 1 and the geometric center line A of each of the first loop units 2 (the geometry) The center line A is connected to the geometric center of the grounding unit 1) and the geometric center line B of each second loop unit 3 (the geometric center line B is connected to the geometric center of the grounding unit 1). The system is the same. In addition, the angle θ' between the two geometric centerlines A of each of the two first loop units 2 (or the two geometric centerlines B of each of the two second loop units 3) may be the same.

For example, in the example of the first embodiment of the present invention, the number of the first loop units 2 is three, and the number of the second loop units 3 is also three, and each The angle θ between the geometric center line A of the first loop unit 2 and the geometric center line B of each of the second loop units 3 is 60 degrees (as shown in FIG. 1A). However, the above-mentioned "the number of the first loop unit 2 and the second loop units 3" and the geometry of the geometric center line A of each of the first loop units 2 and each of the second loop units 3 The degree of the angle θ of the center line B with each other is used as an example and is not intended to limit the present invention.

Furthermore, the grounding unit 1 can be a regular polygonal conductive plate body, a circular conductive plate body, or a conductive plate body of any external shape (the first embodiment of the present invention is described by a regular polygonal conductive plate body), and The center of the grounding unit 1 has a through hole 10. In addition, the wide beam diameter multi-loop antenna module M of the present invention further includes: a plurality of signal wires 4 corresponding to the first loop unit 2 and the second loop unit 3, and the signal wires 4 Passing through the through hole 10 to enable the signal wires 4 to pass through the through hole 10 to achieve the effect of storage, and through the use of the signal wires 4, so that the first loop unit 2 and the second back The antenna signal received by the circle unit 3 can be transmitted to a circuit board (not shown) in a wireless broadband router or hub. Of course, the grounding unit 1 in the first embodiment of the present invention can also omit the design of the through hole 10, so that the signal wires 4 are directly attached to the upper surface of the grounding unit 1, so that the signal wires can also be made. 4 to achieve the effect of storage.

In addition, as shown in the first B diagram and the first C diagram, the first loop units 2 surround the geometric center of the ground unit 1 and are respectively vertically disposed on the outer side 100 of the ground unit 1, wherein each A first loop unit 2 has at least one first shorting pin 20 disposed on the grounding unit 1, at least one spaced apart from the at least one first shorting pin 20 by a predetermined distance and suspended above the grounding unit 1 a first signal feed pin 21 of a predetermined distance, and at least one of a predetermined distance separated from the ground unit 1 and connected to the at least one first short circuit pin 20 and the at least one first signal feed connection The first loop between the feet 21 radiates the body 22. Referring to FIG. 1C, the first shorting pin 20 of each first loop unit 2 and the first signal feeding pin 21 are symmetrically disposed on the geometric center line of each of the first loop units 2 A side of A.

Please cooperate with the first A picture and the first E picture, according to the coordinate direction defined in the first A picture, the first E picture shows one of the first circle unit 2 (for example, the top part in the first picture A) A loop unit 2 (loop 1) operates on the measurement results of the radiation pattern of 2442 MHz in different planes (xz plane, yz plane, xy plane).

It can be seen from the first E-picture that each of the first loop units 2 is a one-wavelength loop and is a balanced structure, which has a large suppression of the grounding unit 1 The surface excites the advantage of the current, so the grounding unit 1 can be considered here as a reflector, so that the antenna radiation pattern of the invention has a higher directivity, especially in the +z and -x directions, To achieve the design of the high gain antenna.

As can be seen from the first E diagram, each of the first loop units 2 is vertically placed at the edge of the ground unit 1 (that is, the outermost side 100 of the ground unit 1), and the radiation pattern of the antenna is subjected to the ground. Unit 1 two orthogonal directions (one direction perpendicular to the ground plane (parallel to the antenna), the other direction is parallel to the ground plane), each first loop unit 2 in the vertical plane of the antenna 3dB half power The half-power beam width may cover an angle above at least one quadrant on the polar coordinate (eg, in the xz plane in the first E diagram, each of the first loop units 2 (loop 1) The 3 dB half power beam path width in the plane perpendicular to the antenna is greater than about 141 degrees in the 2.4 GHz band, so each of the first loop units 2 has a wider beam diameter wide field pattern. In other words, the three independent first loop units 2 will be combined into a "radiation pattern that can cover one half-plane space and the antenna gain values (or power levels) of each point are similar). Thus, the wireless broadband bridging or router device incorporating the wide beam width and wide loop antenna module M of the present invention can be placed in different environments, such as ceilings and walls. Waiting on the table.

In addition, as shown in the first B diagram and the first D diagram, the second loop units 3 surround the geometric center of the ground unit 1 and are respectively vertically disposed on the outer side 100 of the ground unit 1, wherein each A second loop unit 3 has at least one second shorting pin 30 disposed on the grounding unit 1 , at least one of which is spaced apart from the at least one second shorting pin 30 by a predetermined distance and suspended above the grounding unit 1 a predetermined distance of the second signal feeding pin 31, and at least one of the floating distance and perpendicular to the grounding unit 1 by a predetermined distance and connected to the at least one second shorting pin 30 and the at least one second signal feeding connection The second loop between the feet 31 radiates the body 32. Referring to FIG. 1D, the second shorting pin 30 of each second loop unit 3 and the second signal feeding pin 31 are symmetrically disposed on the geometric center line of each second loop unit 3. Both sides of B.

Please cooperate with the first A diagram and the first F diagram, according to the coordinate direction defined in the first A diagram, the first F diagram shows one of the second loop units 3 (for example, the second lowest in the first figure) The loop unit 3 (loop 6) operates on the measurement results of the radiation pattern of 5490 MHz in different planes (xz plane, yz plane, xy plane).

It can be seen from the first F diagram that each of the second loop units 3 is a one-wavelength loop and is a balanced structure, which has a large suppression of the grounding unit 1 The surface excites the advantage of the current, so the grounding unit 1 can be considered here as a reflector, so that the antenna radiation pattern of the invention has a higher directivity, especially in the +z and -x directions, To achieve the design of the high gain antenna.

As can be seen from the first F diagram, each of the second loop units 3 is vertically placed at the edge of the ground unit 1 (that is, the outermost side 100 of the ground unit 1), and the radiation pattern of the antenna is subjected to the ground. Unit 1 two orthogonal directions (one direction perpendicular to the ground plane (parallel to the antenna), the other direction is parallel to the ground plane), each second loop unit 3 in the vertical plane of the antenna 3dB half power The half-power beam width may cover an angle above at least one quadrant on the polar coordinate (eg, in the xz plane in the first F-picture, each second loop unit 3 is perpendicular to the antenna The planar 3dB half-power beamwidth is greater than about 155 degrees in the 5 GHz band, so each second loop unit 3 has a wider beamwidth wide field pattern. In other words, the three independent second loop units 3 will be combined into a "radiation pattern that can cover one half-plane space and the antenna gain values (or power levels) of each point are similar). Thus, the wireless broadband bridging or router device incorporating the wide beam width and multi-loop antenna module of the present invention can be placed in different environments, such as ceilings, walls, tables, and the like.

Moreover, according to different design requirements, the first loop unit 2 and the second loop unit 3 have at least the following five different design aspects:

1. Referring to FIG. B, the first signal feeding pin 21 of each first loop unit 2 is adjacent to the second shorting pin 30 of one of the adjacent second loop units 3. And the first shorting pin 20 of each of the first loop units 2 is adjacent to the second signal feeding pin 31 of the other adjacent second loop unit 3.

In other words, the first signal feeding pin 21 of the first loop unit 2 is adjacent to the second shorting pin 30 of the second loop unit 3 on the left side, as seen by one of the first loop units 2, and The first shorting pin 20 of the first loop unit 2 is adjacent to the second signal feeding pin 31 of the second loop unit 3 on the right side. The problem that the first signal feeding pin 21 and the second signal feeding pin 31 interfere with each other is reduced by the design that the pins are offset from each other, and the first shorting pin 20 is lowered. The second shorting pins 30 have mutual interference problems with each other.

Therefore, the present invention can greatly reduce the mutual coupling between the first loop unit 2 and the second loop unit 3 having different antenna operating frequencies, achieving a good isolation below -15 dB. characteristic.

2. Please cooperate with the first C diagram and the first D diagram, the first shorting pin 20 of each first loop unit 2 and the first signal feeding pin 21 are separated from each other by a predetermined distance, and each one The second shorting pin 30 of the second loop unit 3 and the second signal feeding pin 31 are spaced apart from each other by a predetermined distance to achieve a good match. In addition, according to different design requirements, the designer can adjust the operating frequency of the antenna by adjusting the predetermined distance between the two. In addition, "the predetermined distance between the first shorting pin 20 and the first signal feeding pin 21" and "the predetermined distance between the second shorting pin 30 and the second signal feeding pin 31" are both It can be adjusted as the antenna performance is required. Moreover, the height of each of the first loop unit 2 and each of the second loop units 3 relative to the ground unit 1 can also be adjusted according to the required antenna performance.

Therefore, (1) controlling the distance between the first shorting pin 20 and the first signal feeding pin 21 of each of the first loop units 2, and (2) controlling the second of each of the second loop units 3 The distance between the shorting pin 30 and the second signal feeding pin 31, and (3) controlling the height of each of the first loop unit 2 and each of the second loop unit 3 relative to the grounding unit 1 can obtain a wide beam The wide-width multi-loop antenna module has good impedance matching in the 2.4 GHz and 5 GHz wireless local area network bands (defined by 2:1 VSWR or 10 dB return loss).

3. Please cooperate with the first B picture to the first D picture, each of the first signal feeding pins 21 has a first signal feeding point 210 at the bottom, and each second signal feeding pin 31 The bottom portion has a second signal feed point 310. In addition, the first signal feeding point 210 and the second signal feeding point 310 face the geometric center of the grounding unit 1 (the first signal feeding point 210 and the second signal feeding point 310) The distances respectively relative to the geometric center of the grounding unit 1 may be different, but the feed points of the loop antennas of the same operating band must be the same distance from the geometric center of the grounding unit 1).

In addition, the signal wires 4 are electrically connected to the first signal feed points 210 of the first signal feed pins 21 and the second signals of the second signal feed pins 31. Feed point 310. Through the use of the signal wires 4, the antenna signals received by the first loop unit 2 and the second loop units 3 can be transmitted to a wireless broadband router or hub. Circuit board (not shown).

4. Please cooperate with the first A diagram and the first B diagram, the first shorting pin 20, the first signal feeding pin 21 and the first loop radiation body 22 of each first loop unit 2 are located. The second shorting pin 30, the second signal feeding pin 31 and the second loop radiating body 32 of each second loop unit 3 are located on the same plane or the same curved surface.

5. The first loop unit 2 has the same antenna operating frequency (e.g., low frequency operating frequency), and the second loop units 3 have the same antenna operating frequency (e.g., high frequency operating frequency). For example, the antenna operating frequency of the first loop unit 2 may be 2.4 GHz, and the antenna operating frequency of the second loop unit 3 may be 5 GHz.

Furthermore, according to the structure defined by the above five points for the first loop unit 2 and the second loop unit 3, for example, three first loop units 2 are defined in the first A diagram, and the definition is The uppermost one is the first first loop unit 2, the lower left corner is the second first loop unit 2, the lower right corner is the third first loop unit 2; the first A diagram shows three second The loop unit 3 defines the upper right corner as the first second loop unit 3, the upper left corner is the second second loop unit 3, and the lowermost is the third second loop unit 3.

Please perform the test according to the structure defined by the first loop unit 2 and the second loop unit 3 as shown in the first A diagram and the first G diagram, and the result shows the first The loop unit (represented by S _{11 .} S _{22 .} S ₃₃ ) 2 and the second loop units (represented by S _{44 .} S _{55 .} S ₆₆ ) 3 are at different frequencies (MHz) The resulting reflection coefficient (S Parameter) (dB). As can be seen from the figure, there is a lower (-10 dB or less) reflection coefficient in the operating bands of 2.4 GHz and 5 GHz.

Please perform the test according to the structure defined by the first loop unit 2 and the second loop unit 3 as shown in the first A diagram and the first H diagram, and the result shows any one. An isolation curve between a loop unit 2 and any one of the second loop units 3 with each other. Wherein, S ₂₁ in the first H diagram represents an isolation curve between the second first loop unit 2 and the first first loop unit 2, and S ₃₁ represents a third number. An isolation curve between a loop unit 2 and a first first loop unit 2, and S ₄₁ represents between the first second loop unit 3 and the first first loop unit 2 The isolation curve, S ₅₁ represents the isolation curve between the second second loop unit 3 and the first first loop unit 2, and S ₆₁ represents the third second loop unit. The isolation curve between 3 and the first first loop unit 2, S ₅₄ represents the isolation curve between the second second loop unit 3 and the first second loop unit 3, S ₆₄ represents the isolation curve between the third second loop unit 3 and the first second loop unit 3. As can be seen from the figure, the isolation in the 2.4 GHz and 5 GHz bands can achieve good characteristics below -15 dB.

Please perform the test according to the structure defined by the first loop unit 2 and the second loop unit 3 as shown in the first A map and the first graph I, and the result shows the first one. Antenna gain (dBi) and radiation efficiency obtained by the first loop unit 2 (loop 1) and the third second loop unit 3 (loop 6) at different frequencies (MHz) Radiation efficiency) (%). As can be seen from the figure, the gain of the first loop unit is around 6.5 dBi, and the antenna loop efficiency is above 80% when the second loop unit is near 5.5 dBi.

In addition, referring to the first J diagram, the wide beam diameter wide multi-loop antenna module M of the present invention can be installed in an antenna system housing C (for example, an antenna system shell of a wireless broadband router or an antenna system of a hub) The inside of the housing, for example, is mounted inside the upper cover of the antenna system housing, wherein the grounding unit 1, the first loop unit 2 and the second loop unit 3 are covered by the antenna system housing. The interior of C. Therefore, the wide beam width multi-loop antenna module M of the present invention can be embedded in a wireless broadband router or hub, so the wide beam width multi-loop antenna module M of the present invention does not need to be exposed. Outside the antenna system housing C to maintain the integrity and aesthetics of the overall appearance of the product.

Furthermore, the second embodiment of the present invention provides a wide beam width and multi-loop antenna module M, comprising: a grounding unit 1, a plurality of first loop units 2, and a plurality of second loop units 3. As can be seen from the second A diagram and the second B diagram, the greatest difference between the second embodiment and the first embodiment is that in the second embodiment, the first loop radiation body 22 of each of the first loop units 2 An arcuate body connected between the first shorting pin 20 and the first signal feeding pin 21, and the first loop radiating body 32 of each second loop unit 3 is connected to the The second shorting pin 30 and the second signal are fed into the arc between the pins 31. Of course, the second embodiment can still achieve the functions and effects that the wide beam width and multi-loop antenna module M of the first embodiment can produce.

In addition, a third embodiment of the present invention provides a wide beam width and multi-loop antenna module M, including: a grounding unit 1, a plurality of first loop units 2, and a plurality of second loop units 3. It can be seen from the third A diagram and the third B diagram that the greatest difference between the third embodiment and the first embodiment is that in the third embodiment, the first loop radiation body 22 of each of the first loop units 2 There are two symmetrical first bending portions 220, and the second loop radiation body 32 of each second revolving unit 3 has two symmetrical second bending portions 320. Increasing the length of the radiating body provides a longer resonant path, reducing the antenna operating frequency and thereby reducing the antenna size. Of course, the third embodiment can still achieve the functions and effects that the wide beam width and multi-loop antenna module M of the first embodiment can produce.

Referring to FIG. 4A and FIG. 4B, a fourth embodiment of the present invention provides a wide beam width and multi-loop antenna module M, which includes: a grounding unit 1, and a plurality of first loop units. 2 and a plurality of second loop units 3. It can be seen from the figure that the biggest difference between the fourth embodiment and the first embodiment is that in the fourth embodiment, the first shorting pin 20 and the first signal feeding pin 21 of each first loop unit 2 are And the first loop radiation body 22 is located on the same curved surface, and the second short circuit pin 30, the second signal feed pin 31 and the second loop radiation body 32 of each second loop unit 3 are located in the same On the surface. In this embodiment, the width of both sides of the loop radiation body can be increased to provide a longer resonant path without causing an increase in the overall volume. Of course, the fourth embodiment can still achieve the functions and effects that the wide beam diameter and multi-loop antenna module M of the first embodiment can produce.

In summary, the wide beam width and multi-loop antenna module of the present invention has at least the following advantages:

1. In the example of the present invention, the wide beam diameter wide multi-loop antenna module includes three independent first loop units (large loop size) and three independent second loop units (small back Circle size). Each of the first loop units and each of the second loop units are respectively responsible for low frequency 2.4 GHz band operation and high frequency 5 GHz band operation for the purpose of synchronous dual frequency operation. Therefore, the present invention is different from the conventional dual-frequency antenna. The conventional dual-frequency antenna has only a single signal feeding end, and an additional duplex circuit is required in the synchronous dual-frequency operation, which not only increases the cost, but also causes the loss of the overall system power.

2. In the example of the present invention, the overall height of the wide beam width and multi-loop antenna module does not exceed 15 mm to achieve the possibility of a built-in multi-bridge antenna. In other words, the wide beam width and wide loop antenna module of the present invention can be embedded in a wireless broadband router or hub to maintain the integrity and aesthetics of the overall appearance of the product.

3. In the example of the present invention, (1) controlling the distance between the first shorting pin and the first signal feeding pin of each first loop unit, and (2) controlling each second back. The distance between the second shorting pin of the coil unit and the second signal feeding pin, and (3) controlling the height of each of the first loop unit and each of the second loop unit relative to the grounding unit, a wide beam is obtained The wide-width multi-loop antenna module has good impedance matching in the 2.4 GHz and 5 GHz wireless local area network bands (defined by 2:1 VSWR or 10 dB return loss).

4. In the example of the present invention, because the first shorting pin of each first loop unit is adjacent to the second signal feeding pin of the second loop unit of different antenna operating frequencies (or each second The second shorting pin of the loop unit is adjacent to the first signal feeding pin of the first loop unit of different antenna operating frequencies), so the invention can greatly reduce every two first loop units having different antenna operating frequencies The mutual coupling with the second loop unit achieves good characteristics of isolation below -15 dB.

5. In the example of the present invention, each of the first loop units and each of the second loop units is a one-wavelength loop and is a balanced structure. ), which has the advantage of greatly suppressing the surface excitation current of the antenna ground plane (or system ground plane), so the ground plane (the grounding unit) can be regarded as a reflector here, so that the antenna radiation field of the present invention has a higher Directivity to achieve high gain antenna design.

6. In the example of the present invention, each of the first loop units and each of the second loop units are vertically placed at the edge of the ground plane (ie, the outermost side of the ground unit), the antenna The radiation field type is reflected by two orthogonal directions of the ground plane (one vertical ground plane (parallel to the antenna) and the other parallel parallel ground plane), each of the first loop units and each second back The 3dB half-power beam diameter of the circle unit in a plane perpendicular to the antenna may cover an angle above at least one quadrant on the polar coordinate (eg, each of the first loop units and each The 3dB half power beam diameter of the second loop unit is greater than about 141 degrees and 155 degrees in the 2.4 and 5 GHz bands, respectively, so each of the first loop units and each of the second loop units has a wider beam diameter. Radiation pattern.

7. When the three first loop units (operating in the 2.4 GHz band) or the three second loop units (operating in the 5 GHz band) of the wide beam width and wide loop antenna module of the present invention are operated together, three The respective independent first loop units (or three independent second loop units) will be combined into a "radiation pattern that covers a half-plane space and each antenna gain value (or power) is similar) . Thus, the wireless broadband bridging or router device incorporating the wide beam width and multi-loop antenna module of the present invention can be placed in different environments, such as ceilings, walls, tables, and the like.

8. The wide beam diameter wide multi-loop antenna module of the present invention is entirely made of sheet metal stamping or cutting, and can be formed by a single radiating metal sheet. Therefore, the present invention can effectively save manufacturing costs and processing time.

All the scope of the present invention is intended to be included in the scope of the present invention, and all those skilled in the art should be included in the scope of the present invention. Variations or modifications that can be readily conceived within the scope of the invention are encompassed by the scope of the patents herein below.

C. . . Antenna system housing

M. . . Wide beam width and wide loop antenna module

1. . . Grounding unit

10. . . perforation

100. . . Outer side

2. . . First loop unit

A. . . Geometric centerline

20. . . First shorting pin

twenty one. . . First signal feed pin

210. . . First signal feed point

22‧‧‧First loop radiation body

220‧‧‧First bend

3‧‧‧second loop unit

B‧‧‧Geometry center line

30‧‧‧Second shorting pin

31‧‧‧Second signal feed pin

310‧‧‧second signal feed point

32‧‧‧second loop radiation body

320‧‧‧second bend

4‧‧‧Signal wire

θ, θ′‧‧‧ angle

The first A is a top view of the first embodiment of the wide beam width and multi-loop antenna module of the present invention;

The first B is a perspective view of the first embodiment of the wide beam width and multi-loop antenna module of the present invention;

The first C diagram is a front view of one of the first loop units of the first embodiment of the present invention;

The first D diagram is a front view of one of the second loop units of the first embodiment of the present invention;

The first E diagram is a schematic diagram of a radiation pattern of a first loop unit operating in a different plane (x-z plane, y-z plane, x-y plane) at 2442 MHz according to the first embodiment of the present invention;

The first F diagram is a schematic diagram of a radiation pattern of a second loop unit of the first embodiment of the present invention operating at 5490 MHz in different planes (x-z plane, y-z plane, x-y plane);

The first G map is a graph of the reflection coefficients obtained by the three first loop units and the three second loop units at different frequencies according to the first embodiment of the present invention;

The first H diagram is a graph of isolation between each two loop units of the first embodiment of the present invention;

The first I diagram is a graph of antenna gain and radiation efficiency obtained by one of the first loop units and one of the second loop units at different frequencies according to the first embodiment of the present invention;

The first J diagram is a perspective view of the first embodiment of the present invention, which is disposed in an antenna system housing;

2A is a front view of one of the first loop units of the second embodiment of the present invention;

2B is a front view of a second loop unit of the second embodiment of the present invention;

3A is a front view of one of the first loop units of the third embodiment of the present invention;

The third B is a front view of one of the second loop units of the third embodiment of the present invention;

4A is a top view of a fourth embodiment of the wide beam diameter wide multi-loop antenna module of the present invention;

The fourth B is a perspective view of a fourth embodiment of the wide beam width and multi-loop antenna module of the present invention.

M. . . Wide beam width and wide loop antenna module

10. . . Grounding unit 1 perforated

100. . . Outer side

2. . . First loop unit

20. . . First shorting pin

twenty one. . . First signal feed pin

210. . . First signal feed point

twenty two. . . First loop radiation body

3. . . Second loop unit

30. . . Second shorting pin

31. . . Second signal feed pin

310. . . Second signal feed point

32. . . Second loop radiation body

Claims (20)

A wide beam diameter wide multi-loop antenna module includes: a grounding unit; a plurality of first loop units surrounding a geometric center of the grounding unit and vertically disposed on an outer side of the grounding unit, wherein Each of the first loop units has at least one first shorting pin disposed on the grounding unit, at least one predetermined distance from the at least one first shorting pin and suspended above the grounding unit by a predetermined distance. The first signal feeding pin and the first back of the at least one suspension and perpendicular to the grounding unit and connected to the at least one first shorting pin and the at least one first signal feeding pin a plurality of second loop units surrounding the geometric center of the ground unit and vertically disposed on the outer side of the ground unit, and the second loop unit and the first loop unit Symmetrically staggered, wherein each of the second loop units has at least one second shorting pin disposed on the grounding unit, at least one separated from the at least one second shorting pin a second signal feed pin that is spaced apart from the ground unit by a predetermined distance, and at least one suspended and perpendicular to the ground unit for a predetermined distance and connected to the at least one second shorting pin and the at least one a second loop radiating body between the two feeds; and a plurality of signal conductors corresponding to the first loop unit and the second loop unit, respectively electrically connected to the first signals Feeding pins and the second signal feeding pins, wherein a center of the grounding unit has a through hole, and the signal wires pass through The perforation. The wide beam diameter multi-loop antenna module according to claim 1, wherein the grounding unit is a regular polygonal conductive plate body or a circular conductive plate body. The wide beam diameter multi-loop antenna module according to claim 1, wherein the geometric center line of each of the first loop units and the geometric center line of each of the second loop units are at an angle between each other For the same. The wide beam diameter multi-loop antenna module according to claim 1, wherein the first signal feeding pin of each first loop unit and the second loop unit of one of the adjacent ones The two shorting pins are adjacent to each other, and the first shorting pins of each of the first loop units are adjacent to the second signal feeding pins of the other adjacent second loop unit. The wide beam diameter multi-loop antenna module according to claim 1, wherein the first shorting pin of each first loop unit is symmetrically disposed with each of the first signal feeding pins. The two sides of the geometrical center line of the first loop unit, and the second shorting pin of each second loop unit and the second signal feeding pin are symmetrically disposed at the geometric center of each of the second loop units On both sides of the line. The wide beam diameter multi-loop antenna module according to claim 1, wherein the first shorting pin, the first signal feeding pin and the first loop radiation of each of the first loop units The system is located on the same plane or the same curved surface, and the second shorting pin, the second signal feeding pin and the second loop radiating system of each second loop unit are located on the same plane or the same curved surface. The wide beam diameter multi-loop antenna module according to claim 1, wherein the first loop units have the same antenna operating frequency Rate, and the second loop units have the same antenna operating frequency. The wide beam diameter multi-loop antenna module according to claim 1, wherein the grounding unit, the first loop unit and the second loop unit are integrally formed sheet bodies. The wide beam diameter multi-loop antenna module according to claim 1, wherein the first loop radiation body of each of the first loop units is connected to the first short circuit pin and the first The signal is fed into the arc between the pins, and the first loop radiation body of each second loop unit is an arc connected between the second shorting pin and the second signal feeding pin. Form. The wide beam diameter multi-loop antenna module according to claim 1, wherein the first loop radiation system of each first loop unit has two symmetrical first bending portions, and each The second loop of the second loop unit radiates the system with two symmetrical second bends. A wide beam diameter wide multi-loop antenna module is installed in an antenna system housing, wherein the wide beam width multi-loop antenna module comprises: a grounding unit; a plurality of first loop units, The first loop unit has at least one first shorting pin disposed on the grounding unit, at least one of The at least one first shorting pin is separated by a predetermined distance and suspended at a predetermined distance of the first signal feeding pin above the grounding unit, and at least one is suspended and a first loop radiation body perpendicular to a predetermined distance above the grounding unit and connected between the at least one first shorting pin and the at least one first signal feeding pin; a plurality of second loop units Surrounding the geometric center of the grounding unit and vertically disposed on the outer side of the grounding unit, and the second looping unit is symmetrically staggered with the first looping unit, wherein each second loop unit Having at least one second shorting pin disposed on the grounding unit, at least one second signal feeding pin spaced apart from the at least one second shorting pin by a predetermined distance and suspended above the grounding unit by a predetermined distance And at least one second loop radiation body suspended and perpendicular to the predetermined distance above the grounding unit and connected between the at least one second shorting pin and the at least one second signal feeding pin; and a plurality of The signal wires of the first loop unit and the second loop unit are electrically connected to the first signal feed pins and the second signal feed pins, respectively. a grounding unit has a through hole, and the signal wires pass through the through hole; wherein the grounding unit, the first loop unit and the second loop unit are covered by the antenna system The inside of the housing. The wide beam diameter multi-loop antenna module according to claim 11, wherein the grounding unit is a regular polygonal conductive plate body or a circular conductive plate body. The wide beam diameter multi-loop antenna module according to claim 11, wherein the geometric center line of each of the first loop units and the geometric center line of each of the second loop units are at an angle between each other For the phase with. The wide beam width multi-loop antenna module according to claim 11, wherein the first signal feeding pin of each first loop unit and the second coil unit of one of the adjacent The two shorting pins are adjacent to each other, and the first shorting pins of each of the first loop units are adjacent to the second signal feeding pins of the other adjacent second loop unit. The wide beam diameter multi-loop antenna module according to claim 11, wherein the first shorting pin of each first loop unit is symmetrically disposed with each of the first signal feeding pins. The two sides of the geometrical center line of the first loop unit, and the second shorting pin of each second loop unit and the second signal feeding pin are symmetrically disposed at the geometric center of each of the second loop units On both sides of the line. The wide beam diameter multi-loop antenna module according to claim 11, wherein the first shorting pin, the first signal feeding pin and the first loop radiation of each of the first loop units The system is located on the same plane or the same curved surface, and the second shorting pin, the second signal feeding pin and the second loop radiating system of each second loop unit are located on the same plane or the same curved surface. The wide beam diameter multi-loop antenna module of claim 11, wherein the first loop units have the same antenna operating frequency, and the second loop units have the same antenna Operating frequency. The wide beam diameter multi-loop antenna module according to claim 11, wherein the grounding unit, the first loop unit and the second loop unit are integrally formed sheet-like bodies. Wide beam diameter multi-loop antenna as described in claim 11 a module, wherein the first loop radiation body of each of the first loop units is an arc body connected between the first short circuit pin and the first signal feed pin, and each second back The first loop radiation body of the loop unit is an arc body connected between the second short circuit pin and the second signal feed pin. The wide beam diameter multi-loop antenna module according to claim 11, wherein the first loop radiation system of each first loop unit has two symmetrical first bending portions, and each The second loop of the second loop unit radiates the system with two symmetrical second bends.