Antenna board and antenna device thereof

Abstract

An antenna plate and an antenna device thereof comprise a substrate, and a first radiation part and a second radiation part which are arranged on the upper surface of the substrate, are used for receiving and transmitting two different frequency band signals, and are characterized in that the first radiation part comprises a first branch and a feeding point; the first radiation part is provided with a ground feeding point, and a first branch and a third branch which extend along different directions, the second radiation part is provided with a ground feeding point, and a second branch and a third branch which extend along different directions, the first radiation part and the second radiation part are connected into a whole through a fourth branch, the antenna plate is mounted to a frame body, and a first gap is formed between the second branch and the first side edge of the substrate. In combination with resonance generated by the frame body, the second branch transmits and receives frequency band signals different from those of the first branch and the third branch, so that the antenna board can transmit and receive three different frequency band signals at the same time, and the application range of the antenna board is expanded.

Description

[Technical field]

[0001] The utility model discloses an antenna plate and an antenna device thereof, and particularly relates to a multi-frequency antenna. [Background technology]

[0002] The prior art related to the present invention can be found in CN112821039B. The antenna structure includes a first radiator and a second radiator, which can only transmit and receive high and low frequency band signals, and cannot meet the three-band signal transmission requirements of WI-FI 6e.

[0003] Therefore, it is necessary to provide a new antenna board and antenna device thereof to solve the above problems. [Contents of the utility model]

[0004] The utility model aims to provide an antenna board and an antenna device thereof.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solution: an antenna board, comprising a substrate, and a first radiating part and a second radiating part arranged on the upper surface of the substrate, characterized in that: the first radiating part includes a first branch and is provided with a feeding point, the second radiating part is provided with a feeding point and a second branch and a third branch extending in different directions, the first radiating part and the second radiating part are connected into a whole by a fourth branch, and the first branch, the second branch and the third branch can simultaneously receive and transmit signals of different frequency bands.

[0006] In order to solve the above technical problems, the utility model can also adopt the following technical solutions: an antenna device, including a bottom plate, an antenna plate and a frame, the antenna plate and the bottom plate are respectively arranged at the upper and lower ends of the frame and form a resonance cavity together with the frame, the antenna plate includes a substrate and a first radiating part and a second radiating part located on a side of the substrate away from the resonance cavity, characterized in that: the first radiating part includes a first branch and is provided with a feeding point, the second radiating part is provided with a feeding point and a second branch and a third branch extending in different directions, the first radiating part and the second radiating part are connected into a whole by a fourth branch, and the first branch, the second branch and the third branch can simultaneously receive and transmit signals of different frequency bands.

[0007] Compared with the prior art, the utility model has the following beneficial effects: the antenna board is installed to a frame, the second branch and the first side edge of the substrate have a first gap, and combined with the resonance generated by the frame, the second branch receives and transmits frequency band signals different from the first and third branches. In this way, the antenna board can simultaneously receive and transmit signals of three different frequency bands to meet the transmission requirements of WI-FI 6e.

Brief Description of the Drawings

[0008] Figure 1 It is a three-dimensional diagram of the antenna device of the utility model.

[0009] Figure 2 yes Figure 1 A three-dimensional view of the upper surface of the middle substrate.

[0010] Figure 3 yes Figure 1 A three-dimensional view of the lower surface of the middle base plate.

[0011]

Component Symbol Description

[0012] Antenna device 100 Second branch road 131 Antenna board 10 The third branch 132 substrate 11 Fourth Branch 14 First gap 111 The third radiation 15 Second gap 112 Fifth Branch Road 151 Feeding point 114 Feeding plate 16 Feeding location 113，115 Frame 20 Solder Points 116 Slotting 21 Anchor Point 117 Protrusion 22 The first radiation 12 Base Plate 30 First branch 121 Feeder 40 The second radiation 13

[0013] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. [Specific implementation method]

[0014] Please refer to Figure 1-2 As shown, an antenna device 100 includes an antenna board 10 and a frame 20, wherein the antenna board 10 is arranged at one end of the frame 20 and forms a resonant cavity together with the frame 20. Specifically, the antenna board 10 includes a substrate 11 and a first radiating portion 12 and a second radiating portion 13 located on the upper surface of the substrate 11 away from the resonant cavity, which are used to transmit and receive two different frequency band signals. The first radiating portion 12 includes a first branch 121 and a feeding point 114, and the second radiating portion 13 is provided with a feeding point 115 and a second branch 131 and a third branch 132 extending in different directions. The first radiating portion 12 and the second radiating portion 13 are connected as a whole by a fourth branch 14. The second branch 131 and the first side edge of the substrate 11 have a first gap 111. Combined with the resonance generated by the frame 20, the second branch 131 transmits and receives frequency band signals different from the first and third branches. In this way, the antenna board 10 can simultaneously transmit and receive three different frequency band signals, thereby meeting the transmission requirements of WI-FI 6e.

[0015] Please continue to Figure 1-2 As shown, the main working frequency bands of WI-FI 6e are 2.4Ghz, 5Ghz and 6GHz. In this embodiment, the signal characteristic transmitted by the first branch 121 is a quarter wavelength of the 5Ghz frequency band; the signal characteristic transmitted by the second branch 131 is a quarter wavelength of the 2.4Ghz frequency band; the signal characteristic transmitted by the third branch 132 is a quarter wavelength of the 6GHz frequency band. Based on the long wavelength of low frequency and the short wavelength of high frequency, the second branch 131 has the longest extension length on the substrate 10, and the third branch 132 has the shortest extension length.

[0016] In this embodiment, in order to make the first and second radiation parts 12 and 13 more compact as a whole, the substrate 11 extends along the longitudinal direction and is provided with a second side edge opposite to the first side edge, the first branch 121 and the second branch 131 are arranged side by side along the longitudinal direction, and the third branch 132 is arranged parallel to the first branch 121 from the second branch 131 near the second side edge, so that the first branch 121 is located in the notch formed by the third branch 132 and the first side edge, and the first branch 121 is generally L-shaped to meet the demand for increasingly miniaturized products. Preferably, the signal transmission direction of the third branch 132 is to extend in the longitudinal direction toward the direction away from the second branch 131, and the signal transmission direction of the first branch 121 is to first extend in the horizontal direction toward the first side edge, and then extend in the longitudinal direction toward the direction away from the second branch 131. The signal transmission direction of the second branch 131 is from the second side edge to the first side edge along the transverse direction perpendicular to the longitudinal direction, then extends along the longitudinal direction away from the first branch 121, and finally extends along the transverse second side edge.

[0017] Please refer to Figure 2-3 As shown, the feeding points 114 are respectively arranged on both sides of the substrate 11 and connected to the first branch 121. Preferably, the feeding points 114 located on both sides of the substrate 11 can be penetrated by a plurality of through holes through the substrate 11 to achieve conduction between the upper and lower surfaces of the substrate to connect the feeding points 114 on both sides of the first radiating portion 12 and a feed line 40 (see Figure 1 ) is welded to realize power feeding; the feeding point 115 is arranged at the bottom of the second radiating portion 13, that is, at one end of the second radiating portion 13 close to the third branch 132. Preferably, a third radiating portion 15 is also arranged on the lower surface of the substrate 10, which partially overlaps with the second radiating portion 13, including a feeding point 115 and a fifth branch 151, wherein the feeding point 115 is formed by a plurality of through holes 113 penetrating downward from the bottom of the second radiating portion 13, and then welded to the shielding layer of the feed line 40, and the fifth branch 151 can increase the capacitance of the third and fourth branches 132 and 14 to improve circuit matching; further, a pair of feeding ground plates 16 with multiple feeding points 113 are also arranged on the upper and lower surfaces of the substrate 10, and the feeding points 113 located on the upper and lower sides of the substrate 10 are connected through through holes, and the shielding layer of the feed line 40 is first welded to the feeding ground plate 16 on the lower surface, and then welded to the feeding point 115 of the third radiating portion 15 to realize grounding. In this embodiment, preferably, the ground feed plate 16 located on the upper side of the antenna board 10 is disposed adjacent to the end of the second branch 131 and has a second gap 112 between the end of the second branch.

[0018] Please refer to Figure 1-3As shown, the antenna board 10 includes at least one welding point 116 and a positioning point 117, and the frame 20 is provided with a plurality of protrusions 22 corresponding to the welding points 116 and the positioning points 117. Preferably, the frame 20 is rectangular, a pair of positioning points 117 are located on a pair of short sides in the longitudinal direction, and a plurality of welding points 116 are distributed on a pair of long sides of the frame 20. A slot 21 is provided on the edge of the frame 20. When installed, the second branch 131 reserves a first gap 111 from the first side of the substrate 10, and at the same time, A second gap 112 is formed between the ground feed pieces 16 on the upper surface of the substrate 10. After the feed line 40 is welded to the corresponding feed point, it is accommodated in the slot 21, and then the positioning point 117 is fixed to the corresponding protrusion 22, and the welding point 116 is welded. Preferably, both sides of the frame 20 are provided with slots 21, and the feed line 40 can be connected to the frame 20 from any side to improve the adaptability of the antenna device 100; when working, the length and width of the first gap 111 can be adjusted to change the receiving and transmitting frequency band of the second branch 131. When increasing the width of the first gap 111, the length of the first gap 111 needs to be extended simultaneously to achieve the best transceiver effect in the 2.4G frequency band. It can be seen that the length and width of the first gap 111 are proportional. If the aspect ratio of the first gap 111 is unbalanced, the second branch 131 cannot transmit and receive 2.4G frequency band signals and switches to high-frequency signal transmission and reception. In this embodiment, the second branch 131 is as close as possible to the first side of the substrate 11 to compress the width of the first gap 111, and then the length of the first gap 111 and the second branch 131 are adjusted to optimize the transceiver effect of the 2.4Ghz frequency. Preferably, by adjusting the second gap 112, the overall frequency matching of the low and high frequency bands of the antenna board 10 can be fine-tuned to achieve the best signal transceiver effect. In other embodiments, the first and second radiating portions 12 and 13 can be arranged on the lower surface of the substrate 10, and the third radiating portion 15 is located on its upper surface. The transceiver of three-band signals can be realized by adjusting the width of the first and second gaps 111 and 112. Furthermore, the antenna device 10 is provided with a bottom plate 30 for easy installation.

[0019] The above description is only part of the implementation methods of the utility model, not all of the implementation methods. Any equivalent changes made to the technical solution of the utility model by ordinary technicians in this field after reading the specification of the utility model are covered by the claims of the utility model.

Claims

1. An antenna board, comprising a substrate, and a first radiating portion and a second radiating portion disposed on the upper surface of the substrate, for transmitting and receiving signals of two different frequency bands, characterized in that: The first radiating part includes a first branch and a feeding point, the second radiating part is provided with a feeding point and a second branch and a third branch extending in different directions, the first radiating part and the second radiating part are connected into a whole by a fourth branch, the antenna board is installed on a frame, the second branch and the first side edge of the substrate have a first gap, and combined with the resonance generated by the frame, the second branch receives and transmits frequency band signals different from the first and third branches. In this way, the antenna board can simultaneously receive and transmit signals of three different frequency bands.

2. The antenna board according to claim 1, characterized in that: The first branch extends to a quarter wavelength of the 5 GHz frequency band; the second branch extends to a quarter wavelength of the 2.4 GHz frequency band; and the third branch extends to a quarter wavelength of the 6 GHz frequency band.

3. The antenna board according to claim 1, characterized in that: A third radiation portion is disposed on the lower surface of the substrate and partially overlaps with the second radiation portion. The feeding point extends downward from the second radiation portion through a portion of the third radiation portion.

4. The antenna board according to claim 3, characterized in that: The third radiating portion further includes a fifth branch, which can increase the capacitive properties of the third and fourth branches to improve circuit matching.

5. The antenna board according to claim 1, characterized in that: The feeding point and the ground feeding point are both penetrated by through holes, so that the upper and lower surfaces of the substrate are connected.

6. The antenna board according to claim 1, characterized in that: The substrate extends in the longitudinal direction and has a second side edge opposite to the first side edge. In the longitudinal direction, the first branch and the second branch are arranged side by side, and the third branch protrudes from the second branch near the second side edge and is arranged in parallel with the first branch.

7. The antenna board according to claim 6, characterized in that: The fourth branch is arranged near the first side edge to connect the first radiating portion and the second radiating portion, and the transceiver frequency band of the second branch can be changed by adjusting the size of the first gap.

8. The antenna board according to claim 1, characterized in that: A ground feeding plate with multiple feeding points is also provided on the upper surface of the substrate. The ground feeding plate is arranged adjacent to the end of the second branch and has a second gap with the end of the second branch. By adjusting the second gap, the frequency matching of the antenna board can be adjusted.

9. An antenna device, comprising an antenna plate and a frame, wherein the antenna plate is disposed at one end of the frame and forms a resonance cavity together with the frame, wherein the antenna plate comprises a substrate and a first radiation portion and a second radiation portion disposed on a side of the substrate that is located on an upper surface of the substrate and away from the resonance cavity, wherein: The first radiating portion includes a first branch and a feeding point, the second radiating portion is provided with a feeding point and a second branch and a third branch extending in different directions, the first radiating portion and the second radiating portion are connected into a whole by a fourth branch, the second branch and the first side edge of the substrate have a first gap, and combined with the resonance generated by the frame, the second branch transmits and receives frequency band signals different from the first and third branches. In this way, the antenna device can simultaneously transmit and receive signals of three different frequency bands.

10. The antenna device according to claim 9, characterized in that: The first and second radiation parts are provided with a plurality of through holes, and a feed line is welded to the lower surface of the substrate, and power feeding and ground feeding are realized through the through holes.

11. The antenna device according to claim 9, characterized in that: The edge of the frame is provided with a slot, and a feeder is received in the slot.

12. The antenna device according to claim 9, characterized in that: The antenna board includes at least one welding point, the frame includes a protrusion corresponding thereto, and the antenna board can be welded to the frame.

Images