Low-frequency symmetrical oscillator and antenna thereof

Abstract

The invention is suitable for the technical field of antennas, and provides a low-frequency symmetrical oscillator and an antenna thereof, the low-frequency symmetrical oscillator comprises a radiation sheet, a PCB balun and a plastic part, the radiation sheet comprises a first radiation unit arm group and a second radiation unit arm group which are orthogonal to each other, the first radiation unit arm group comprises two first sub radiation unit arms, and the second radiation unit arm group comprises two second sub radiation unit arms. The first radiation unit arm group comprises two first sub-radiation unit arms, the second radiation unit arm group comprises two second sub-radiation unit arms, the two first sub-radiation unit arms are diagonally arranged, the two second sub-radiation unit arms are diagonally arranged, the radiation sheet is arranged at the top of the plastic part, and the PCB balun comprises a first feed sheet and a second feed sheet. The first feed piece is attached to the upper end of the radiation piece to feed the radiation piece in a coupling mode, one end of the second feed piece penetrates through the radiation piece and is connected with the first feed piece, and the other end of the second feed piece is inserted into the plastic part and is fixed to the lower end of the plastic part. Therefore, light weight and miniaturization of the antenna are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of antenna equipment, and in particular to a low-frequency symmetrical oscillator and an antenna thereof. Background Art

[0002] With the rapid development of wireless communication, base station antennas, as the transceiver devices of communication systems, have been continuously improved and enhanced by forming antenna arrays. The bowl-shaped low-frequency radiation units commonly used in existing antennas are heavy in die-casting and have relatively large diameters, which cannot meet the requirements of lightweight and miniaturization of antennas.

[0003] In summary, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0004] In view of the above-mentioned defects, an object of the present invention is to provide a low-frequency symmetrical oscillator and an antenna thereof, so as to achieve lightweight and miniaturization of the antenna.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a low-frequency symmetrical oscillator, including a radiating plate, a PCB balun and a plastic part, the radiating plate including a first radiating unit arm group and a second radiating unit arm group that are orthogonal to each other, the first radiating unit arm group including two first sub-radiating unit arms, the second radiating unit arm group including two second sub-radiating unit arms, the two first sub-radiating unit arms are diagonally arranged, and the two second sub-radiating unit arms are diagonally arranged, the radiating plate is arranged on the top of the plastic part, the PCB balun includes a first feeding plate and a second feeding plate, the first feeding plate is attached to the upper end of the radiating plate to couple and feed the radiating plate, one end of the second feeding plate passes through the radiating plate and is connected to the first feeding plate, and the other end of the second feeding plate is inserted into the plastic part and fixed to the lower end of the plastic part.

[0006] According to the low-frequency symmetrical oscillator of the present invention, the radiation plate is a sheet metal radiation plate.

[0007] According to the low-frequency symmetrical oscillator of the present invention, the two first sub-radiating unit arms are respectively provided with a first branch, and the first branch extends toward the middle of the first sub-radiating unit arm;

[0008] The two second sub-radiation unit arms are respectively provided with a second branch, and the second branch extends toward the middle of the second sub-radiation unit arm.

[0009] According to the low-frequency symmetrical oscillator of the present invention, a fixing piece is disposed on the plastic piece, and the fixing piece is respectively connected and fixed to the radiation piece and the second feeding piece.

[0010] According to the low-frequency symmetrical vibrator of the present invention, the fixing member includes a column, a fixing hole and a hook.

[0011] According to the low-frequency symmetrical oscillator of the present invention, the operating frequency band of the low-frequency symmetrical oscillator is 690Mhz to 960Mhz.

[0012] According to the low-frequency symmetrical oscillator of the present invention, first circuits are provided on both sides of the first feeding plate, second circuits are provided on both sides of the second feeding plate, and the first circuit and the second circuit are connected to each other.

[0013] According to the low-frequency symmetrical oscillator of the present invention, the first feeding plate and the second feeding plate are connected by welding.

[0014] In order to achieve another purpose of the present invention, the present invention also provides an antenna, including a reflecting plate, at least four high-frequency radiation units and the low-frequency symmetrical vibrator described in any one of the above items, the low-frequency symmetrical vibrator and the high-frequency radiation unit are respectively arranged on the front side of the reflecting plate, and the low-frequency symmetrical vibrator is nested among the four high-frequency radiation units.

[0015] According to the antenna of the present invention, the reflector is a metal reflector, and two side plates of the metal reflector are in an "L" shape.

[0016] The present invention provides a low-frequency symmetrical vibrator and an antenna thereof, comprising a radiating plate, a PCB balun and a plastic part, wherein the radiating plate is fixed on the top of the plastic part, the radiating plate comprises a first radiating unit arm group and a second radiating unit arm group orthogonal to each other at 90 degrees, the first radiating unit arm group and the second radiating unit arm group respectively comprise two first sub-radiating unit arms arranged diagonally and two second sub-radiating unit arms arranged diagonally, the first radiating unit arm group constitutes positive polarization, the second radiating unit arm group constitutes negative polarization, the first feeding plate of the PCB balun is attached to the upper end of the radiating plate to couple and feed the radiating plate, one end of the second feeding plate of the PCB balun passes through the radiating plate and is connected to the first feeding plate, the other end of the second feeding plate is inserted into the plastic part and fixed to the lower end of the plastic part. Thus, the low-frequency symmetrical vibrator and the antenna thereof of the present invention realize lightweight and miniaturization of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the low-frequency symmetrical oscillator provided by the present invention;

[0018] Figure 2 It is a structural explosion diagram of the low-frequency symmetrical vibrator provided by the present invention;

[0019] Figure 3 It is a schematic structural diagram of a radiation piece of a low-frequency symmetrical oscillator provided by the present invention;

[0020] Figure 4It is a schematic diagram of the structure of the PCB balun of the low-frequency symmetrical oscillator provided by the present invention;

[0021] Figure 5 It is a voltage standing wave ratio diagram of the low-frequency symmetrical vibrator provided by the present invention;

[0022] Figure 6 It is the gain diagram of the low-frequency symmetrical oscillator provided by the present invention;

[0023] Figure 7 It is a structural schematic diagram of the antenna provided by the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] like Figures 1 to 4As shown, the present invention provides a low-frequency symmetrical oscillator 10, including a radiation plate 1, a PCB balun 2 and a plastic part 3, the radiation plate 1 includes a first radiation unit arm group 11 and a second radiation unit arm group 12 that are orthogonal to each other, the first radiation unit arm group 11 includes two first sub-radiation unit arms 111, the second radiation unit arm group 12 includes two second sub-radiation unit arms 121, the two first sub-radiation unit arms 111 are diagonally arranged, the two second sub-radiation unit arms 121 are diagonally arranged, the two first sub-radiation unit arms 111 and the two second sub-radiation unit arms 121 are not close to each other and are not connected, the first radiation unit arm group 11 constitutes positive polarization, and the second radiation unit arm group 12 constitutes positive polarization. 2 constitutes negative polarization, the first radiation unit arm group 11 and the second radiation unit arm group 12 are orthogonal at 90 degrees, the two first sub-radiation unit arms 111 are respectively provided with a first branch 1111 extending toward the middle of the first sub-radiation unit arm 111, and the two second sub-radiation unit arms 121 are respectively provided with a second branch 1211 extending toward the middle of the second sub-radiation unit arm 121. In this embodiment, the first branch 1111 is eight first branches 1111, and the second branch 1211 is eight second branches 1211. The first branch 1111 and the second branch 1211 can decouple the high-frequency radiation unit 30. When the column spacing of the nested array of the low-frequency symmetrical oscillator 10 and the high-frequency radiation unit 30 is small, the first branch 111 1 and the second branch 1211 can decouple the high-frequency radiation unit 30, reduce the influence of the low-frequency symmetrical oscillator 10 on the high-frequency radiation unit 30, the radiation plate 1 is arranged on the top of the plastic part 3, the radiation plate 1 is a sheet metal radiation plate 1, the sheet metal radiation plate 1 does not need to be electroplated, has lower loss and higher radiation efficiency, is environmentally friendly and green, the PCB balun 2 includes a first feeding plate 21 and a second feeding plate 22, the first feeding plate 21 is placed horizontally, and the second feeding plate 22 is placed vertically, the first feeding plate 21 is attached to the upper end of the radiation plate 1 to couple and feed the radiation plate 1, one end of the second feeding plate 22 passes through the radiation plate 1 and is connected to the first feeding plate 21, and the other end of the second feeding plate 22 is inserted into the The plastic part 3 is fixed to the lower end of the plastic part 3, and the first circuit 211 and the second circuit 221 are respectively provided on both sides of the first feeding plate 21 and the second feeding plate 22. The second circuit 221 of the second feeding plate 22 transmits the electrical signal to the first circuit 211 of the first feeding plate 21. The first feeding plate 21 is fitted with the upper end of the radiation plate 1 to realize the coupling feeding of the radiation plate 1. The first circuit 211 at the upper end of the first feeding plate 21 matches and adjusts the coupling feeding of the radiation plate 1. The plastic part 3 is used to install and fix the radiation plate 1 and the PCB balun 2. The structure is stable, so that the low-frequency symmetrical vibrator 10 is light in weight and small in size. The low-frequency symmetrical vibrator 10 is applied to the antenna 100 to realize the lightweight and miniaturization of the antenna 100.

[0026] Preferably, the radiation piece 1 is a sheet metal radiation piece 1, which does not require electroplating, has lower loss and higher radiation efficiency, and is environmentally friendly and green.

[0027] Preferably, the two first sub-radiating unit arms 111 are respectively provided with a first branch 1111, and the first branch 1111 extends to the middle of the first sub-radiating unit arm 111; the two second sub-radiating unit arms 121 are respectively provided with a second branch 1211, and the second branch 1211 extends to the middle of the second sub-radiating unit arm 121. In this embodiment, the first branches 1111 are eight first branches 1111, and the second branches 1211 are eight second branches 1211. When the column spacing of the nested array of the low-frequency symmetrical oscillator 10 and the high-frequency radiating unit 30 is small, the first branches 1111 and the second branches 1211 can decouple the high-frequency radiating unit 30, thereby reducing the influence of the low-frequency symmetrical oscillator 10 on the high-frequency radiating unit 30.

[0028] Preferably, a fixing part is provided on the plastic part 3, and the fixing part is respectively connected and fixed to the radiation plate 1 and the second feeding plate 22, and the fixing part fixes the radiation plate 1 to the upper end of the plastic part 3, and the second feeding plate 22 of the PCB balun 2 passes through the plastic part 3 and fixes the PCB balun 2 to the lower end of the plastic part 3 through the fixing part.

[0029] Preferably, the fixing member includes a column, a fixing hole and a hook, and the column, the fixing hole and the hook respectively fix the radiation sheet 1 and the PCB balun 2 on the plastic part 3, and the structure is stable and reliable.

[0030] Preferably, if Figure 5 As shown, the working frequency band of the low-frequency symmetrical vibrator 10 is 690Mhz to 960Mhz. When the working frequency band is 690Mhz to 960Mhz, the voltage standing wave ratio of the low-frequency symmetrical vibrator 10 is less than 1.55, and the matching of the low-frequency symmetrical vibrator 10 is good. Figure 6 is the gain of the low-frequency symmetrical oscillator 10. When the low-frequency symmetrical oscillator 10 is in the working frequency range of 690Mhz to 960Mhz, the gain of the low-frequency symmetrical oscillator 10 is greater than 8.5dBi.

[0031] Preferably, a first circuit 211 is provided on both sides of the first feeding plate 21, and a second circuit 221 is provided on both sides of the second feeding plate 22, the first circuit 211 and the second circuit 221 are connected to each other, the second circuit 221 of the second feeding plate 22 transmits the electrical signal to the first circuit 211 of the first feeding plate 21, the first feeding plate 21 is fitted with the upper end of the radiation plate 1 to realize the coupling feeding of the radiation plate 1, and the first circuit 211 at the upper end of the first feeding plate 21 matches and adjusts the coupling feeding of the radiation plate 1.

[0032] Preferably, the first feeding plate 21 and the second feeding plate 22 are connected by welding, and the first feeding plate 21 and the second feeding plate 22 are stably connected.

[0033] like Figure 7 As shown, the present invention also provides an antenna 100, comprising a reflecting plate 20, at least four high-frequency radiation units 30 and the low-frequency symmetrical vibrator 10 described in any one of the above items, wherein the low-frequency symmetrical vibrator 10 and the high-frequency radiation unit 30 are respectively arranged on the front side of the reflecting plate 20, and the low-frequency symmetrical vibrator 10 is nested in the middle of the four high-frequency radiation units 30, and the two first sub-radiation unit arms 111 on the radiation plate 1 of the low-frequency symmetrical vibrator 10 are respectively provided with a first branch 1111 extending toward the middle of the first sub-radiation unit arm 111, and the two second sub-radiation unit arms 121 on the radiation plate 1 of the low-frequency symmetrical vibrator 10 are respectively provided with a second branch 1211 extending toward the middle of the second sub-radiation unit arm 121, the first branch 1111 and the second branch 1211 can decouple the high-frequency radiation unit 30, reduce the performance impact of the low-frequency symmetrical vibrator 10 on the high-frequency radiation unit 30, and the low-frequency symmetrical vibrator 10 is easy to install and suitable for mass production.

[0034] Preferably, the reflector 20 is a metal reflector 20 , and both side plates of the metal reflector 20 are in an “L” shape, which helps to reduce interference from other directions and improve the signal purity and transmission efficiency of the antenna 100 .

[0035] In summary, the present invention provides a low-frequency symmetrical vibrator and its antenna, including a radiating plate, a PCB balun and a plastic part, wherein the radiating plate is fixed on the top of the plastic part, the radiating plate includes a first radiating unit arm group and a second radiating unit arm group orthogonal to each other at 90 degrees, the first radiating unit arm group and the second radiating unit arm group respectively include two first sub-radiating unit arms diagonally arranged and two second sub-radiating unit arms diagonally arranged, the first radiating unit arm group constitutes positive polarization, the second radiating unit arm group constitutes negative polarization, the first feeding plate of the PCB balun is attached to the upper end of the radiating plate to couple and feed the radiating plate, one end of the second feeding plate of the PCB balun passes through the radiating plate and is connected to the first feeding plate, and the other end of the second feeding plate is inserted into the plastic part and fixed to the lower end of the plastic part. By this, the low-frequency symmetrical vibrator and its antenna of the present invention realize lightweight and miniaturization of the antenna.

[0036] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A low-frequency symmetrical oscillator, characterized in that: It includes a radiation plate, a PCB balun and a plastic part, the radiation plate includes a first radiation unit arm group and a second radiation unit arm group which are orthogonal to each other, the first radiation unit arm group includes two first sub-radiation unit arms, the second radiation unit arm group includes two second sub-radiation unit arms, the two first sub-radiation unit arms are diagonally arranged, and the two second sub-radiation unit arms are diagonally arranged, the radiation plate is arranged on the top of the plastic part, the PCB balun includes a first feeding plate and a second feeding plate, the first feeding plate is attached to the upper end of the radiation plate to couple and feed the radiation plate, one end of the second feeding plate passes through the radiation plate and is connected to the first feeding plate, and the other end of the second feeding plate is inserted into the plastic part and fixed to the lower end of the plastic part.

2. The low-frequency symmetrical oscillator according to claim 1, characterized in that: The radiation piece is a sheet metal radiation piece.

3. The low-frequency symmetrical oscillator according to claim 1, characterized in that: The two first sub-radiating unit arms are respectively provided with a first branch, and the first branch extends toward the middle of the first sub-radiating unit arm; The two second sub-radiation unit arms are respectively provided with a second branch, and the second branch extends toward the middle of the second sub-radiation unit arm.

4. The low-frequency symmetrical oscillator according to claim 1, characterized in that: The plastic part is provided with fixing parts, and the fixing parts are respectively connected and fixed to the radiation plate and the second feeding plate.

5. The low-frequency symmetrical oscillator according to claim 4, characterized in that: The fixing member comprises a column, a fixing hole and a hook.

6. The low-frequency symmetrical oscillator according to claim 1, characterized in that: The operating frequency band of the low-frequency symmetrical oscillator is 690Mhz to 960Mhz.

7. The low-frequency symmetrical oscillator according to claim 1, characterized in that: A first circuit is disposed on both sides of the first feeding plate, a second circuit is disposed on both sides of the second feeding plate, and the first circuit and the second circuit are connected to each other.

8. The low-frequency symmetrical oscillator according to claim 1, characterized in that: The first feeding plate and the second feeding plate are connected by welding.

9. An antenna, characterized in that: It comprises a reflecting plate, at least four high-frequency radiation units and a low-frequency symmetrical vibrator as described in any one of claims 1 to 8, wherein the low-frequency symmetrical vibrator and the high-frequency radiation unit are respectively arranged on the front side of the reflecting plate, and the low-frequency symmetrical vibrator is nested among the four high-frequency radiation units.

10. The antenna according to claim 9, characterized in that: The reflector is a metal reflector, and both side plates of the metal reflector are in an "L" shape.

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