TWI495194B - Dual-band antenna and wireless communication device having the dual-band antenna - Google Patents

Description

Dual frequency antenna and wireless network device having the same

The present invention relates to a dual frequency antenna, and more particularly to a left and right symmetric dual frequency antenna suitable for use on a wireless network device, and a wireless network device having the dual frequency antenna.

Referring to FIG. 1, FIG. 1 is a perspective view of a typical wireless network device 10. The wireless network device 10 generally includes a body 11 , an internal circuit device 12 located inside the body 11 , and a connector portion 13 at one end of the body 11 for connecting to an external host (not shown). And an antenna signal transceiver portion 14 located on the body 11 and opposite to the other end of the connector portion 13. Generally, the outer casing of the antenna signal transmitting and receiving unit 14 is made of a non-metal material, and when the wireless network device 10 is connected to an external host, the antenna signal transmitting and receiving unit 14 needs to be exposed to the outside of the external host to be effective. Send and receive wireless signals.

Referring to FIG. 2, FIG. 2 is a schematic diagram of a conventional internal circuit device 20 of a wireless network device. The conventional internal circuit device 20 of the wireless network device includes a substrate 21, a control circuit 22 on the substrate 21, a ground portion 23 covering a predetermined area on the substrate 21, and an antenna unit 24 It is electrically connected to the control circuit 22. The conventional antenna unit 24 shown in FIG. 2 includes a first antenna 241 and a second antenna 242 respectively located on both sides of the substrate 21. Since the antenna design of the internal circuit device 20 is designed on the substrate 21 in the form of a printed monopole antenna. Since such a printed antenna is limited by the difference in height in the vertical direction, it can only be achieved by designing the first antenna 241 and the second antenna 242 of different shapes to achieve the XY plane (horizontal direction). A better radiation field and higher gain are obtained, but there is almost no room for improvement in the gain in the vertical Z direction. However, today's wireless network The design trend of the road device is toward the "Vertical Stand" design to reduce the space occupation and at the same time improve the modern and technological sense of the appearance of the wireless network device product. Obviously, the poor gain of the conventional printed antenna in the vertical Z direction will not meet the needs of the vertical wireless network device.

For example, please refer to FIG. 3, which is a radiation pattern diagram of the first antenna of the conventional printed antenna unit 24 shown in FIG. 2 tested on the X-Y plane. As can be seen from the radiation pattern of FIG. 3, the maximum gain of the first antenna 241 in the vertical direction is only -15.89 dBi, which is significantly lower than the limit that the consumer can tolerate (generally The required gain value should be at least above -10 dBi), which is a requirement for high-efficiency antenna design in the general market, and obviously there is room for further improvement.

The main object of the present invention is to provide a dual-frequency antenna, which is provided with one, two, three, and four radiators respectively through two symmetric right and left antenna portions, and cooperates with the first and the first The second, third, and fourth radiators have their respective folded hem oscillating responses to generate high and low frequency bands to increase the vertical gain value and increase the bandwidth.

For the above purposes, the dual-frequency antenna of the present invention is a flat panel antenna and further includes: a right antenna portion, a left antenna portion, and an engaging portion. The right antenna portion includes: a first radiator and a second radiator, and the first and second radiators are spaced apart from each other by a predetermined distance. The left antenna portion is in a parallel state with the right antenna portion, and includes a third radiator and a fourth radiator, and the third and fourth radiators are spaced apart from each other by a predetermined distance. The connecting portion is connected to the right antenna portion and the left antenna portion by the same side, and at least one grounding end and at least one feeding end are disposed at the preset position of the connecting portion.

Provided at the side edges of the outer side of one of the right antenna portion and the left antenna portion, respectively, corresponding to one of the first, second, third, and fourth radiators, first and second, a third and a fourth flange, and a hook body extending outwardly at one end of the second and fourth flanges; wherein the first and third radiators are respectively located at the first Adjacent sides of the third hemming edge are respectively provided with opposite ends of the first and third hemming edges and corresponding to each other.

Signal oscillating between the first radiator and the third radiator generates a first frequency The signal is oscillated between the second radiator and the fourth radiator to generate a second frequency to achieve the function of dual frequency. The first frequency is a low frequency band (2450 MHz); the second frequency is a high frequency band (5500 MHz). The first, second, third, and fourth folded edges respectively disposed on the first, second, third, and fourth radiators, and the end portions of the second and fourth folded sides are respectively Extending the hook body further enables the wireless network device having the dual-frequency antenna of the present invention to obtain a better radiation field type, and can greatly improve the antenna performance and bandwidth, so that the communication bandwidth of the dual-frequency antenna of the present invention is further improved. Wide.

10‧‧‧Wireless network device

11‧‧‧Ontology

12‧‧‧Internal circuit devices

13‧‧‧Connector Department

14‧‧‧Antenna Signal Transceiver

20‧‧‧Learning internal circuit devices

21‧‧‧Substrate

22‧‧‧Control circuit

23‧‧‧ Grounding Department

24‧‧‧Antenna unit

241‧‧‧first antenna

242‧‧‧second antenna

5‧‧‧Double frequency antenna

51‧‧‧Right antenna

510‧‧‧ outside side

511‧‧‧First radiator

5111‧‧‧First Folding

5112‧‧‧ buckle end

5113‧‧‧L-shaped gap

512‧‧‧second radiator

5121‧‧‧second fold

5122‧‧‧ hooks

52‧‧‧left antenna

520‧‧‧Outside

521‧‧‧ Third radiator

5211‧‧‧ third fold

5212‧‧‧ buckle end

5213‧‧‧L-shaped gap

522‧‧‧fourth radiator

5221‧‧‧4nd hem

5222‧‧‧ hooks

53‧‧‧Connecting Department

531‧‧‧ Grounding terminal

532‧‧‧Feeding end

7‧‧‧Wireless network device

71‧‧‧Substrate

711‧‧‧ openings

712, 712'‧‧‧ grooves

72‧‧‧ Grounding Department

73‧‧‧Control circuit

74‧‧‧ tandem bus junction

Figure 1 is a perspective view of a typical wireless network device.

2 is a schematic diagram of a conventional internal circuit device of a wireless network device.

Figure 3 is a radiation pattern diagram of the first antenna of the conventional antenna unit shown in Figure 2 tested on the X-Y plane.

Figure 4 is a perspective view of the dual frequency antenna of the present invention.

Figure 5A is a front view of a dual band antenna having the present invention.

Figure 5B is a rear view of the dual band antenna of the present invention.

Figure 5C is a left side view of the dual band antenna of the present invention.

Figure 5D is a right side view of the dual band antenna of the present invention.

Figure 5E is a bottom view of the dual band antenna of the present invention.

Figure 6 is a perspective view of a wireless network device having a dual band antenna of the present invention.

Figure 7 is a graph of the test foldback loss of the dual-band antenna of the present invention in the application band range (2 to 6 GHz).

FIG. 8A is a gain peak test diagram of the right antenna portion of the dual-band antenna of the present invention in a low frequency band range (2450 MHz).

FIG. 8B is a gain peak test diagram of the right antenna portion of the dual-band antenna of the present invention in a high frequency band range (5500 MHz).

Figure 9A is a gain peak test diagram of the left antenna portion of the dual band antenna of the present invention in the low frequency band range (2450 MHz).

FIG. 9B is a gain peak test diagram of the left antenna portion of the dual-band antenna of the present invention in a high frequency band range (5500 MHz).

Figure 10A is a radiation pattern diagram of the right antenna portion of the dual-frequency antenna of the present invention tested on the X-Z plane of the low frequency band range (2450 MHz).

Figure 10B is a radiation pattern diagram of the right antenna portion of the dual-frequency antenna of the present invention tested on the Y-Z plane of the low frequency band range (2450 MHz).

Figure 10C is a radiation pattern diagram of the right antenna portion of the dual-frequency antenna of the present invention tested on the X-Y plane of the low frequency band range (2450 MHz).

Figure 11A is a radiation pattern diagram of the right antenna portion of the dual-frequency antenna of the present invention tested on the X-Z plane of the high frequency band range (5500 MHz).

Figure 11B is a radiation pattern diagram of the right antenna portion of the dual-frequency antenna of the present invention tested on the Y-Z plane of the high frequency band range (5500 MHz).

Figure 11C is a radiation pattern diagram of the right antenna portion of the dual-frequency antenna of the present invention tested on the X-Y plane of the high frequency band range (5500 MHz).

The main principle of the dual-frequency antenna of the present invention and the wireless network device having the dual-frequency antenna is mainly that the right and left antenna portions integrally stamped and formed are combined and electrically connected to a substrate in a symmetrical manner (multi-layer type On the printed circuit board, the substrate having the right and left antenna portions forms a dual-frequency wireless network device with the serial bus bar connection terminal. It not only has high and low frequency bands at the same time, but also achieves higher vertical direction gain, and is more convenient and cost-effective in the production and use combination.

Please refer to FIG. 4 and FIG. 5A to FIG. 5E, which are respectively a perspective view, a front view, a rear view, a left side view, a right side view, and a bottom view of the dual band antenna of the present invention. A preferred embodiment of the dual-band antenna 5 of the present invention is a one-piece stamped antenna, and includes a right antenna portion 51, a left antenna portion 52, and an engaging portion 53. The right antenna portion 51 includes a first radiator 511 and a second radiator 512. The left antenna portion 52 is in parallel with the right antenna portion 51 and includes a third radiator 521 and a fourth radiator 522. The connecting portion 53 is vertically connected to the right antenna portion 51 and the left antenna portion 52 from the same side, respectively. At least one grounding end 531 and at least one feeding end 532 are disposed at the preset position of the connecting portion 53.

That is, the right antenna portion 51, the left antenna portion 52, and the engaging portion 53 are The conductive metal foil is integrally stamped and bent into a U-shaped solid element, and at the same time, the right antenna portion 51 and the left antenna portion 52 are both parallel to each other. In the embodiment of the present invention, the first antenna 511 and the third radiator 521 of the right antenna portion 51 and the left antenna portion 52 are substantially L-shaped metal foils, and the right antenna portion 51 and the same The second radiator 512 and the fourth radiator 522 are respectively located substantially in the L-shaped notches 5113 and 5213 of the first radiator 511 and the third radiator 521, respectively, and The first radiator 511 and the third radiator 521 are spaced apart by a predetermined distance d, and are respectively located on the same horizontal plane.

One of the outer side surfaces 510 and 520 of the right antenna portion 51 and the left antenna portion 52 The first side, the second, the third, the fourth side 5111 of the first, second, third, and fourth radiators 511, 512, 521, 522 are respectively disposed at the side edges. 5121, 5211, 5221, and a hook-shaped body 5122, 5222 extending outwardly from the end of the second and fourth flanges 5121, 5221, respectively. The first and third radiators 511 and 521 are respectively disposed at opposite sides of the first and third flanges 5111 and 5211, and are respectively bent opposite to the first and third flanges 5111 and 5211. And corresponding to one of the fastening ends 5112, 5212. By the arrangement of the flanges 5111, 5121, 5211, 5221 and the hooks 5122 and 5222 which are uniquely created by the present invention, the communication bandwidth can be effectively improved, and the bandwidth of the dual-band antenna 5 of the present invention can be communicated wider.

Providing at least one grounding end 531 and at least one at a predetermined position of the engaging portion 53 The feeding end 532 is electrically connected to one of the grounding portion 72 of the substrate 7 and a control circuit 73. In the embodiment, the feeding end 532 and the grounding end 531 are punched out in the punching manner, and two sets of feeding ends 532 and two sets of grounding ends extending vertically downward and separated by a predetermined distance are continuously punched out. 531. Moreover, the two sets of grounding ends 531 are located at a central portion of the connecting portion 53, and the feeding ends 532 are respectively located at left and right sides of the two sets of grounding ends 531. That is, four sets of spaced-apart metal contacts, that is, the two feeding ends 532 and the two grounding ends 531, which are closer to the center of the engaging portion 53, are punched out by mechanical punching on the engaging portion 53. The two sets of metal contacts are the grounding end 531, and the two ends of the engaging portion 53 are respectively the two feeding ends 532.

In this embodiment, the dual-frequency antenna 5 is a thin metal plate having conductivity (for example) Such as copper, iron, aluminum, tin, nickel, silver, chromium, gold or alloys thereof, etc., which are formed by bending and forming a three-dimensional element. That is, the right antenna portion 51, the left antenna portion 52, and the connection The portion 53 is a dual-frequency antenna 5 which is formed by integrally forming a metal foil having electrical conductivity and bent into a U shape. Therefore, the dual-frequency antenna 5 has almost the same thickness t except for the turning and bending.

In other words, the right antenna portion 51 and the left antenna portion 52 are respectively stamped out. The first and third radiators 511 and 521 can provide signal oscillation to generate a first frequency, and the second and fourth radiators 512 and 522 can provide signal oscillation to generate a second frequency to achieve dual frequency. Features. The frequency band of the first frequency is 2450 MHz (low frequency band); and the frequency band of the second frequency is 5500 MHz (high frequency band).

Please refer to FIG. 6 , which is a wireless network device with the dual-frequency antenna of the present invention. A three-dimensional diagram of the setting. In the preferred embodiment, the dual frequency antenna 5 is assembled on a wireless network device 7. The wireless network device 7 further includes a substrate 71, a grounding portion 72 (GND), a control circuit 73, and a series of bus bar (USB) terminals 74. The substrate 71 is a multilayer printed circuit board composed of a dielectric material, and is substantially rectangular in shape, and the substrate 71 has a plurality of openings 711. The grounding portion 72 is provided with a function of electrical grounding (GND) and is located on a portion of the substrate 71 to provide electrical connection between the grounding end 531 of the dual-frequency antenna 5.

The control circuit 73 is disposed on the substrate 71 to provide the dual-frequency antenna 5 The feeding end 532 is electrically connected, and includes a circuit layout, a plurality of integrated circuit components and a plurality of electronic components, and can provide communication protocols conforming to 802.11a, 802.11b, 802.11g, 802.11n or/and ultra-wideband (UWB). Wireless network transmission function. Since the control circuit 73 described herein can be used with conventional techniques and is not the main technical features of the present invention, the detailed configuration thereof will not be described below.

The right and left antenna portions 51 and 52 of the dual-frequency antenna 5 of the present invention are substantially They are respectively disposed on both sides of the substrate 71 in a mutually symmetrical manner, and the shapes of the right and left antenna portions 51 and 52 substantially correspond to each other. The fastening ends 5112, 5212 of the first and third radiators 511, 521 are respectively engaged in the two grooves 712, 712' corresponding to the two sides of the substrate 71, so that the right The surface of the left antenna portion 51, 52 is substantially perpendicular to the surface of the substrate 71, and the grounding end 531 of the two groups is penetrated through the opening 711 of the substrate 71, and is further electrically connected to the substrate 71 by soldering. The ground portion 72 is ground. The other two sets of the feed end 532 are also inserted into the opening 711 respectively disposed on the substrate 71, and are also electrically connected to the control circuit 73 of the substrate 71 by soldering. The right and left antenna portions 51 and 52 and the substrate 71 form an electrical circuit as a whole to generate an oscillation frequency.

The serial port (USB) connection 74 of the wireless network device 7 is electrically connected to the control circuit 73 on the substrate 71. The transmission specification of the serial port bus can be one of USB2.0 and USB3.0. Of course, the wireless network device 7 may further include a Bluetooth device (not shown) electrically connected to the control circuit 73, thereby achieving the function of Bluetooth transmission, because the Bluetooth technology system is a conventional one. And widely used in the market for wireless communication technology, so I will not go into details here.

Please refer to FIG. 7. FIG. 7 is a diagram showing the test foldback loss of the dual-band antenna in the application frequency band range (2-6 GHz) according to the present invention. For example, the following data can be obtained after the test by the example of the foldback loss map of the right antenna portion 51 and the left antenna portion 52 of the dual-band antenna 5:

Ch1 Tr1 s11 1 2.4000000 GHz-8.9196dB; Ch1 Tr1 s11 2 2.4500000 GHz-11.006dB; Ch1 Tr1 s11 3 2.5000000 GHz-11.973dB; Ch1 Tr1 s11 4 5.1500000 GHz-17.214dB; Ch1 Tr1 s11 5 5.5000000 GHz-12.457dB; Ch1 Tr1 s11 6 5.8500000 GHz-12.878dB.

Ch1 Tr2 s22 1 2.4000000 GHz-10.962dB; Ch1 Tr2 s22 2 2.4500000 GHz-16.380dB; Ch1 Tr2 s22 3 2.5000000 GHz-19.477dB; Ch1 Tr2 s22 4 5.1500000 GHz-7.9101dB; Ch1 Tr2 s22 5 5.5000000 GHz-15.351dB; Ch1 Tr2 s22 6 5.8500000 GHz-19.542dB.

Ch1 Tr3 s21 1 2.4000000 GHz-10.525dB; Ch1 Tr3 s21 2 2.4500000 GHz-9.8122dB; Ch1 Tr3 s21 3 2.5000000 GHz-9.9732dB; Ch1 Tr3 s21 4 5.1500000 GHz-13.581dB; Ch1 Tr3 s21 5 5.5000000 GHz-14.070dB; Ch1 Tr3 s21 6 5.8500000 GHz-13.616dB.

From the data obtained by the above-mentioned foldback loss test, it is clear that the right antenna portion 51 of the dual-frequency antenna 5 and the left antenna portion 52 of the present invention have a return loss between the first frequency (low frequency) of 2450 MHz and at 5500 GHz. The return loss and the separation between the second frequency (high frequency) The performance in the deviation is better.

Referring to FIG. 8A and FIG. 8B, FIG. 8A is a gain peak test diagram of the right antenna portion of the dual-band antenna in the low frequency band range (2450 MHz) according to the present invention. FIG. 8B is a gain peak test diagram of the right antenna portion of the dual-frequency antenna in the high frequency band range (5500 MHz) according to the present invention.

As shown in FIG. 8A, the right antenna portion 51 of the dual-frequency antenna 5 of the present invention can be applied to the first frequency of low frequency (2450 MHz), and its maximum gain peak can be as high as 1.63 dBi; the present invention as shown in FIG. When the right antenna portion 51 of the dual-frequency antenna 5 is applied to the second frequency (5500 MHz) of the high frequency, the maximum gain peak can be as high as 2.73 dBi.

Referring to FIG. 9A and FIG. 9B, FIG. 9A is a gain peak test diagram of the left antenna portion of the dual-band antenna in the low frequency band range (2450 MHz) according to the present invention. FIG. 9B is a gain peak test diagram of the left antenna portion of the dual-frequency antenna in the high frequency band range (5500 MHz) according to the present invention.

As shown in FIG. 9A, the left antenna portion 52 of the dual-frequency antenna 5 of the present invention can be applied to the first frequency of low frequency (2450 MHz), and its maximum gain peak can be as high as 0.10 dBi; the present invention as shown in FIG. 9B When the left antenna portion 52 of the dual-frequency antenna 5 is applied to the second frequency (5500 MHz) of the high frequency, the maximum gain peak can be as high as 2.88 dBi.

Please refer to the following Table 1. The maximum and minimum of the first antenna (2450MHz, low frequency) and the second frequency (5500MHz, high frequency) of the right antenna portion and the left antenna portion of the dual-frequency antenna of the present invention at different coordinate planes. And the test values of the average gain value (dB) are as follows:

Please refer to FIG. 10A, FIG. 10B, and FIG. 10C. FIG. The resulting antenna pattern is tested on the X-Z plane of the low frequency range (2450 MHz) of the right antenna portion of the frequency antenna. Figure 10B is a radiation pattern diagram of the right antenna portion of the dual-band antenna of the present invention tested on the Y-Z plane of the low frequency band range (2450 MHz). Figure 10C is a radiation pattern diagram of the right antenna portion of the dual-band antenna of the present invention tested on the X-Y plane of the low frequency band range (2450 MHz).

Due to the structure and arrangement of the right antenna portion 51 of the dual-band antenna 5 of the present invention Both the type and the position are substantially the same as the left antenna portion 52. Therefore, only the right antenna portion 51 is applied to the XZ, YZ, and XY planes for the low frequency and high frequency range (2.45, 5.5 GHz). The radiation pattern is illustrated and described in detail.

The right antenna portion 51 of the dual-band antenna 5 of the present invention as shown in FIG. 10A is in the application band The radiation pattern obtained by testing on the XZ plane of the (2450 MHz) and the above Table 1 can be seen that the right antenna portion 51 is applied to the first frequency of the low frequency (2450 MHz), and the maximum gain in the XZ plane direction. Values can be as high as -1.76dB, with a minimum gain of -14.74dB and an average gain of -5.53 dB.

The right antenna portion 51 of the dual-band antenna 5 of the present invention as shown in FIG. 10B is in the application band The radiation pattern obtained by testing on the YZ plane of the circumference (2450 MHz) and the above Table 1 can be seen that the right antenna portion 51 is applied to the first frequency of the low frequency (2450 MHz), and the maximum gain in the YZ plane direction. The value can be as high as 0.70dB, the minimum gain value is -13.71dB, and the gain value is on average -4.13 dB.

The right antenna portion 51 of the dual-band antenna 5 of the present invention as shown in FIG. 10C is in the application band The radiation pattern obtained by testing on the XY plane of the (2450 MHz) and the above Table 1 can be seen that the right antenna portion 51 is applied to the first frequency of the low frequency (2450 MHz), and the maximum gain in the XY plane direction. The value can be as high as 1.37dB, the minimum gain is -18.86dB, and the gain value is -4.76dB on average.

Please refer to FIG. 11A, FIG. 11B, and FIG. 11C, and FIG. 11A is The right antenna portion of the dual band antenna of the present invention is tested on the X-Z plane of the high frequency band range (5500 MHz) to obtain the resulting radiation pattern. Figure 11B is a radiation pattern diagram of the right antenna portion of the dual-frequency antenna tested on the Y-Z plane of the high frequency band range (5500 MHz). Figure 11C is a radiation pattern diagram of the right antenna portion of the dual-frequency antenna of the present invention tested on the X-Y plane of the high frequency band range (5500 MHz).

The right antenna portion 51 of the dual-band antenna 5 of the present invention as shown in FIG. 11A is in an application frequency band. The radiation pattern obtained by testing on the XZ plane of the range (5500 MHz) and the above Table 1 can be seen that the right antenna portion 51 is applied to the second frequency of the high frequency (5500 MHz), and the maximum in the XZ plane direction. The gain value can be as high as 1.49dB, the minimum gain value is -14.63dB, and the gain value is -2.20 dB on average.

The right antenna portion 51 of the dual-band antenna 5 of the present invention as shown in FIG. 11B is in the application frequency band. The radiation pattern shown in the YZ plane of the range (5500 MHz) and the above Table 1 can be seen that the right antenna portion 51 is applied to the second frequency of the high frequency (5500 MHz), and the maximum in the YZ plane direction. The gain value can be as high as -0.13dB, the minimum gain value is -14.63dB, and the gain value is -3.73 dB on average.

The right antenna portion 51 of the dual-band antenna 5 of the present invention as shown in FIG. 11C is in the application frequency band. The radiation pattern shown in the XY plane of the range (5500 MHz) and the above Table 1 can be seen that the right antenna portion 51 is applied to the second frequency of the high frequency (5500 MHz), and the maximum in the XY plane direction. The gain value can be as high as -1.87 dB, the minimum gain value is -9.25 dB, and the gain value is on average - 5.36 dB.

It can be further seen that the right and left antenna portions 51, 52 of the dual-frequency antenna 5 of the present invention are The foldback loss in the first frequency of the low frequency band (2450MHz) and the second frequency of the high frequency band (5500MHz) are less than -10dB, which is sufficient for the general market design of high performance antennas. It can be imagined that the right and left antenna portions 51 and 52 of the dual-band antenna 5 of the present invention can provide better and more stable dual-band wireless signal communication quality and transmission efficiency, and are not only convenient and fast to manufacture, but also convenient for combination in wireless. The substrate 71 of the network device 7 is reduced in cost and the overall volume of the wireless network device 7 is reduced.

The above embodiments are not intended to limit the scope of application of the present invention. this The scope of the invention should be based on the technical spirit defined by the content of the patent application scope of the present invention and the scope thereof. It is to be understood that the scope of the present invention is not limited by the spirit and scope of the present invention, and should be considered as a further embodiment of the present invention.

5‧‧‧Double frequency antenna

51‧‧‧Right antenna

510‧‧‧ outside side

511‧‧‧First radiator

5111‧‧‧First Folding

5112‧‧‧ buckle end

5113‧‧‧L-shaped gap

512‧‧‧second radiator

5121‧‧‧second fold

5122‧‧‧ hooks

52‧‧‧left antenna

520‧‧‧Outside

521‧‧‧ Third radiator

5211‧‧‧ third fold

5212‧‧‧ buckle end

5213‧‧‧L-shaped gap

522‧‧‧fourth radiator

5221‧‧‧4nd hem

5222‧‧‧ hooks

53‧‧‧Connecting Department

531‧‧‧ Grounding terminal

532‧‧‧Feeding end

Claims (10)

A dual-frequency antenna is disposed on a substrate, and includes: a right antenna portion, comprising: a first radiator and a second radiator, wherein the first and second radiators are spaced apart from each other by a preset a left antenna portion in parallel with the right antenna portion, comprising: a third radiator and a fourth radiator, wherein the third and fourth radiators are spaced apart from each other by a predetermined distance; and The connecting portion is connected to the right antenna portion and the left antenna portion by the same side, and at least one grounding end and at least one feeding end are respectively disposed at the preset position of the engaging portion, and are respectively grounded with one of the substrates And a control circuit for electrically connecting; wherein, at the side edges of the outer side of each of the right antenna portion and the left antenna portion, respectively corresponding to the first, second, third, a first, second, third, and fourth hem of the fourth radiator, and a hook-shaped body extending outwardly from the end of the second and fourth hem adjacent to the engaging portion; wherein, The first and third radiators are each located at the first, The three adjacent sides of each flange is provided with the reverse folded first, and third mutually corresponding flange engaging one end. The dual-frequency antenna of claim 1, wherein the first and third radiators provide signal oscillation to generate a first frequency; and the second and fourth radiators provide signal oscillation to generate a second Frequency, to achieve the function of dual frequency. The dual-frequency antenna according to claim 2, wherein the frequency band of the first frequency is 2450 MHz; and the frequency band of the second frequency is 5500 MHz. The dual-frequency antenna according to claim 1, wherein the right antenna portion, the left antenna portion, and the connecting portion are formed of a conductive metal foil to be integrally stamped and bent into a U shape. The three-dimensional component. The dual-frequency antenna according to claim 1, wherein the feeding end and the grounding end are respectively two groups, and the feeding end portions are respectively located at two sides of the two sets of grounding ends. The dual-frequency antenna according to the first aspect of the invention, wherein the fastening ends of the first and third radiators respectively are respectively engaged with a concave portion at a predetermined position of the periphery of the substrate. In the slot, the right and left antenna portions are respectively disposed on the two sides of the substrate in a mutually symmetrical manner such that the surfaces of the right and left antenna portions are perpendicular to the surface of the substrate, and the shapes of the right and left antenna portions are substantially The upper lines correspond to each other. A wireless network device having a dual-frequency antenna, comprising: a substrate, which is a printed circuit board having at least one circuit layer; wherein a grounding and a ground of an electrical ground are provided on the substrate a control circuit, the control circuit can provide a wireless network communication function; a bus connection end is electrically connected to the control circuit on the substrate; and at least one dual frequency antenna includes: a right antenna unit The first radiator and the second radiator are separated from each other by a predetermined distance; a left antenna portion is parallel to the right antenna portion, and includes: a third radiator and a fourth radiator, wherein the third and fourth radiators are spaced apart from each other by a predetermined distance; and an connecting portion is vertically connected to the right antenna portion and the left antenna portion by the same side, and At least one grounding end and at least one feeding end are disposed at the preset position of the connecting portion, and are respectively electrically connected to the grounding portion of the substrate and the control circuit; wherein, the right antenna portion and the left antenna portion each One side of the outer side surface is respectively provided with a first, second, third, and fourth folds corresponding to each other and perpendicular to the first, second, third, and fourth radiators, and Second, the fourth folded edge is adjacent to one end of the connecting portion, and a hook body is respectively extended outward; wherein the first and third radiating bodies are respectively located at the adjacent sides of the first and third folded edges. The first and third flanges are oppositely bent and corresponding to one of the fastening ends. The wireless network device with a dual-frequency antenna according to claim 7, wherein the first and third radiators can provide signal oscillation to generate a first frequency; and the second and fourth radiators can The signal is oscillated to generate a second frequency to achieve a dual frequency function; the frequency band of the first frequency is 2450 MHz; and the frequency band of the second frequency is 5500 MHz. The wireless network device with a dual-frequency antenna according to claim 7, wherein the right antenna portion, the left antenna portion, and the connecting portion are formed of a conductive metal foil for integral stamping, and The U-shaped three-dimensional component is bent into each other; the feeding end and the grounding end are respectively two groups, and the feeding end is respectively located at two sides of the two sets of grounding ends. The wireless network device with a dual-frequency antenna according to claim 7, wherein the fastening ends of the first and third radiators are respectively engaged with the peripheral edge of the substrate. Positioning the groove in one of the positions, so that the right and left antenna portions are respectively disposed in a mutually symmetric manner On both sides of the substrate, the surfaces of the right and left antenna portions are perpendicular to the surface of the substrate, and the shapes of the right and left antenna portions substantially correspond to each other.