CN201352597Y - Multi-frequency antenna - Google Patents

Abstract

The utility model discloses a multifrequency antenna, this multifrequency antenna include a ground connection portion, a simulation inductance portion, a connecting portion, a high frequency radiation portion, a low frequency radiation portion and a feed point. The grounding part is provided with a substrate; the analog inductance part is formed by extending one side edge of the substrate in an outward inclined mode; the connecting part is formed by bending and extending one end of the analog inductance part; the high-frequency radiation part is formed by extending one side edge of the connecting part outwards; the low-frequency radiation part is formed by extending the other side edge of the connecting part away from the high-frequency radiation part outwards; the feed-in point is arranged on the connecting part. The utility model discloses a form of being connected with the base plate slope is set to simulation inductance portion to realize impedance match, removed the simulation capacitance portion of current multifrequency antenna, thereby not only be difficult to take place the short circuit, it is with low costs moreover.

Description

multi-frequency antenna

technical field

The utility model relates to an antenna, in particular to a multi-frequency antenna used in electronic communication products such as notebook computers.

Background technique

With the rapid development of electronic products, especially the rapid development of wireless electronic communication products, multi-frequency antennas are widely used. In order to meet the performance requirements of electronic communication products, multi-frequency antennas are usually provided with an analog capacitor.

Please refer to FIG. 1 , which is a perspective view of a current multi-frequency antenna 100 ′. The multi-frequency antenna 100 ′ includes a rectangular plate-shaped connecting portion 1 ′, and one end of the connecting portion 1 ′ protrudes from a feed-in Point 2`, the other end extends a high-frequency radiation part 4`, one side edge of the connection part 1` extends an analog capacitor part 3` on the same level as the connection part 1`, and one side edge of the connection part 1` There is a meandering low-frequency radiation part 5' extended, and a meandering and extending simulated inductance part 6' extending from the other side edge, and a grounding part 7' is extended from one side edge of one end of the simulated inductance part 6', and the grounding part 7' is located at Below the analog capacitor part 3'.

However, when the analog capacitor portion 3 ′ is deformed due to external force, the analog capacitor portion 3 ′ is easily short-circuited with the ground portion 7 ′, thereby affecting the performance of the multi-band antenna 100 ′. A current solution is to add a hard carrier (not shown) under the multi-frequency antenna 100 ′ to prevent the deformation of the multi-frequency antenna 100 ′, but this method will increase the manufacturing cost.

Utility model content

The main purpose of this utility model is to provide a multi-frequency antenna for the defects of the above-mentioned background technology. The multi-frequency antenna has low cost, is not easy to short-circuit and can improve the efficiency of low-frequency bands.

In order to achieve the above object, the multi-frequency antenna of the present invention is used for assembling on communication electronic products. The multi-frequency antenna includes a grounding part, the grounding part has a substrate, and one side edge of the substrate extends obliquely outwards with a simulated inductance part. ; One end of the analog inductance part is bent and extended to form a connection part; one side edge of the connection part extends outwards to a high-frequency radiation part; the other side edge of the connection part extends outwards to a low-frequency part away from the high-frequency radiation part The radiating part; the feeding point is set on the connecting part.

In summary, the utility model sets the analog inductance part in a form of oblique connection with the substrate, so as to realize impedance matching, and removes the analog capacitor part of the current multi-frequency antenna, so that not only is it not easy to short circuit, but it can also improve the performance of the low frequency band. Efficiency and low cost.

Description of drawings

FIG. 1 is a perspective view of a current multi-frequency antenna.

Fig. 2 is a perspective view of an embodiment of the multi-frequency antenna of the present invention.

FIG. 3 is a perspective view of another viewing angle of the multi-frequency antenna shown in FIG. 2 .

FIG. 4 is a graph of the voltage standing wave ratio of the multi-frequency antenna shown in FIG. 2 .

FIG. 5 is an efficiency table of the multi-frequency antenna shown in FIG. 2 and the current multi-frequency antenna in the GSM850 frequency band.

FIG. 6 is an efficiency table of the multi-frequency antenna shown in FIG. 2 and the current multi-frequency antenna in the GSM900 frequency band.

FIG. 7 is an efficiency table of the multi-frequency antenna shown in FIG. 2 and the current multi-frequency antenna in the PCS frequency band.

The reference numerals of each element in the figure are explained as follows:

[Background technique]

Multi-frequency antenna 100` connection part 1`

Feed point 2` High frequency radiation part 4`

Analog capacitance section 3` Low frequency radiation section 5`

Analog inductance part 6` Grounding part 7`

[this utility model]

Multi-frequency antenna 100 ground part 1

base 10 first side edge 11

Second side edge 12 Fixed plate 13

Fixing hole 131 Analog inductance part 2

The first conduction section 21 The second conduction section 22

Connecting part 3 Feed-in point 4

High Frequency Radiation Department 5 First Extension Department 51

Second extension 52 Third extension 53

Low Frequency Radiation Department 6 First Radiation Department 61

The second radiation department 62 The third radiation department 63

Fourth radiation department 64

Detailed ways

In order to illustrate the technical content, structural features, purpose and effect of the present utility model in detail, the following examples are given to illustrate in detail with accompanying drawings.

Please refer to FIG. 2 , which is a perspective view of an embodiment of the multi-frequency antenna 100 of the present invention applied to a notebook computer (not shown in the figure). The multi-frequency antenna 100 is made by punching metal sheets, and includes a grounding part 1 , a simulated inductance part 2 , a connecting part 3 , a feeding point 4 , a high-frequency radiation part 5 and a low-frequency radiation part 6 .

The ground portion 1 includes a strip-shaped substrate 10 . The substrate 10 includes two opposite first side edges 11 and second side edges 12 . The second side edge 12 is located above the first side edge 11 . Two ends of the substrate 10 are respectively bent and extended at the second side edge 12 to form a fixing block 13 , and a fixing hole 131 is opened on the fixing block 13 . The multi-frequency antenna 100 of the present invention is fixed on the notebook computer through the fixing hole 131, so that the multi-frequency antenna 100 and the notebook computer are stably fixed.

The simulated inductor part 2 includes a first conduction part 21 and a second conduction part 22 . The first conducting portion 21 is formed by obliquely extending from the middle of the second side edge 12 of the substrate 10 to the left rear. The end of the first conducting portion 21 is bent and extended to the left to form the second conducting portion 22 . The first conductive portion 21 and the second conductive portion 22 are strip-shaped and in the same plane, and the plane where the simulated inductor portion 2 is located is perpendicular to the plane where the substrate 10 is located. The connection of the analog inductance part 2 to the ground plane can achieve the effect of simulating parallel inductance elements, which can achieve impedance matching between the multi-frequency antenna 100 and the high-frequency circuit (not shown) inside the notebook computer.

The connecting portion 3 is generally hook-shaped, which is formed by bending and extending the left end of the second conducting portion 22 backwards and then downwards. The feeding point 4 is provided at the front end of the upper surface of the connecting part 3 .

Please refer to FIG. 2 and FIG. 3 , the high frequency radiation portion 5 includes a first extension portion 51 , a second extension portion 52 and a third extension portion 53 . The left edge of the rear end of the connecting portion 3 extends leftward to form the first extension portion 51 , and the first extension portion 51 is parallel to the base plate 10 . The upper surface of the left end of the first extension portion 51 extends forward to form the second extension portion 52 , and the left edge of the front end of the second extension portion 52 extends leftward to form the third extension portion 53 , the third extension portion 53 is located behind the fixed block 13 . The second extension portion 52 and the third extension portion 53 are in the same plane. The high-frequency radiation unit 5 is used for transmitting and receiving high-frequency signals.

The low frequency radiation part 6 includes a first radiation part 61 , a second radiation part 62 , a third radiation part 63 and a fourth radiation part 64 . The right edge of the rear end of the connecting portion 3 extends to the right to form the first radiating portion 61; the upper surface of the right end of the first radiating portion 61 first extends forward and then to the right to form the second radiating portion 62; The rear surface of the right end of 62 first extends downward and then rightward to form the third radiating portion 63 ; the upper surface of the right end of the third radiating portion 63 first extends forward and then rightward to form the fourth radiating portion 64 .

The first radiating portion 61 to the fourth radiating portion 64 are strip-shaped, the first radiating portion 61 and the third radiating portion 63 are in the same plane, and the second radiating portion 62 and the fourth radiating portion 64 are in the same plane. Therefore, when the multi-frequency antenna 100 of the present invention is fixed on the notebook computer, not only the multi-frequency antenna 100 of the present invention can be stably fixed, but also the low-frequency radiation part 6 is not easily deformed.

When the multi-frequency antenna 100 of the present invention is used for communication, the substrate 10 of the grounding part 1 is grounded, and the current is fed in by the feeding point 4. When the low-frequency radiation part 6 sends and receives electromagnetic waves, a main resonance mode is excited, so that the low-frequency radiation part 6 Transmit and receive electromagnetic wave signals whose center frequency is GSM850 and GSM900. When transmitting and receiving electromagnetic waves, the high-frequency radiation unit 5 can transmit and receive battery wave signals in DCS, PCS and WCDMA frequency bands.

Please refer to FIG. 4 , which is a test chart of the VSWR of the multi-frequency antenna 100 of the present invention. It can be seen from this figure that when the multi-frequency antenna 100 works at 824MHz (Mkr1 in the figure), the VSWR is 3.338; when it works at 960MHz (Mkr2 in the figure), the VSWR is 2.922; it works at 1.71GHz (Mkr2 in the figure). When Mkr3 in the figure), the VSWR is 1.708; when working at 1.88GHz (Mkr4 in the figure), the VSWR is 1.768; when working at 2.17GHz (Mkr5 in the figure), the VSWR is 1.912.

Please refer to FIG. 5 . FIG. 5 is an efficiency table of the multi-frequency antenna 100 of the present invention and the current multi-frequency antenna 100 ′ in the GSM850 frequency band. From the data in the table, it can be seen that when the multi-frequency antenna 100 of the present invention works in the GSM850 frequency band, its average transceiving efficiency is about 57.972%, which is much higher than the 55.712% transceiving efficiency of the current multi-frequency antenna 100.

Please refer to FIG. 6. FIG. 6 is an efficiency table of the multi-frequency antenna 100 of the present invention and the current multi-frequency antenna 100' in the GSM900 frequency band. It can be seen from the data in the table that when the multi-frequency antenna 100 of the present invention works in the GSM900 frequency band, its average transceiving efficiency is about 70.709%, which is much higher than the current multi-frequency antenna 100's transceiving efficiency of 62.948%.

Please refer to Fig. 7, it is the efficiency table of multi-frequency antenna 100 of the present invention and current multi-frequency antenna 100 ' in PC S frequency band. From the data in the table, it can be seen that when the multi-frequency antenna 100 of the present invention works in the PCS frequency band, its average transceiving efficiency is about 67.384%, which is much higher than the current multi-frequency antenna 100's transceiving efficiency of 60.711%. As can be seen from Fig. 5 to Fig. 7, the multi-frequency antenna 100 of the present invention can improve the efficiency of GSM850, GSM900 and PCS frequency bands.

To sum up, the multi-frequency antenna 100 of the present invention is arranged in a form of oblique connection with the substrate 10 through the analog inductance part 2, which realizes the required impedance matching between the antenna and the external high-frequency circuit, and removes the analog capacitance of the prior art. Therefore, not only is it not easy to short circuit, but the efficiency of the low frequency band can be improved, and the cost is low.

Claims (8)

1. a multifrequency antenna comprises a grounding parts, a simulaed inductance portion, a junction, a high-frequency radiation part, a low frequency radiation portion and a load point, and it is characterized in that: described grounding parts has a substrate; Described simulaed inductance portion is formed by the outward-dipping extension of a lateral margin of described substrate; Described connecting portion is extended by the end bending away from grounding parts of described simulaed inductance portion and forms; Described high-frequency radiation part is stretched out by a lateral margin of described connecting portion and forms; Described low frequency radiation portion is stretched out by another lateral margin of described connecting portion and forms; Described load point is located on the described connecting portion.

2. multifrequency antenna according to claim 1, it is characterized in that: described simulaed inductance portion comprises one first conducting part and one second conducting part, first conducting part is that the lateral margin place diagonally extending by substrate forms, second conducting part is formed by the end bending extension of first conducting part, and first conducting part and second conducting part are in same plane.

3. multifrequency antenna according to claim 1 is characterized in that: the plane at described simulaed inductance portion place is vertical with the plane at described substrate place.

4. multifrequency antenna according to claim 1, it is characterized in that: described low frequency radiation portion comprises first Department of Radiation, second Department of Radiation, the 3rd Department of Radiation and the 4th Department of Radiation, the rear end margo dexter of described connecting portion extends to form described first Department of Radiation to the right, the right-hand member upper surface of first Department of Radiation extends to form earlier described second Department of Radiation forward more to the right, the right-hand member rear surface of second Department of Radiation extends to form earlier described the 3rd Department of Radiation downwards more to the right, and the right-hand member upper surface of the 3rd Department of Radiation extends to form earlier described the 4th Department of Radiation forward more to the right.

5. multifrequency antenna according to claim 4 is characterized in that: described first Department of Radiation and the 3rd Department of Radiation are in same plane, and second Department of Radiation and the 4th Department of Radiation are in same plane.

6. multifrequency antenna according to claim 1, it is characterized in that: described high-frequency radiation part comprises first extension, second extension and the 3rd extension, the rear end left border of described connecting portion extends to form described first extension left, the left end upper surface of described first extension extends to form described second extension forward, and the front end left border of second extension has extended to form described the 3rd extension left.

7. multifrequency antenna according to claim 6 is characterized in that: described first extension is parallel with described substrate.

8. multifrequency antenna according to claim 6 is characterized in that: described second extension and the 3rd extension are in same plane.

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