CN216161926U - High-frequency radiation unit and base station antenna - Google Patents
High-frequency radiation unit and base station antenna Download PDFInfo
- Publication number
- CN216161926U CN216161926U CN202122203277.2U CN202122203277U CN216161926U CN 216161926 U CN216161926 U CN 216161926U CN 202122203277 U CN202122203277 U CN 202122203277U CN 216161926 U CN216161926 U CN 216161926U
- Authority
- CN
- China
- Prior art keywords
- copper
- clad
- radiating
- frequency
- clad sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The utility model discloses a high-frequency radiation unit and a base station antenna, wherein the high-frequency radiation unit comprises: the radiating surface, the feed unit and the filtering grounding module; the radiation surface comprises two groups of dipoles which are orthogonally arranged in polarization to form four radiation arms; the feed unit comprises a coaxial cable and a metal support rod; the filtering grounding module is a dielectric substrate comprising an upper layer of copper clad and a lower layer of copper clad, the upper layer of copper clad is formed by connecting a circular copper clad and a filtering grounding wire, the lower layer of copper clad is formed by mutually independently connecting a circular copper clad and an annular copper clad which surrounds the circular copper clad, and the filtering grounding wire and the annular copper clad are conducted through a through hole; the coaxial cable, the metal supporting rod, the upper circular copper-clad sheet and the lower circular copper-clad sheet are connected to form a balance-unbalance exchanger, and when the radiating unit is installed on the reflecting plate, the lower annular copper-clad sheet is coupled with the reflecting plate, so that a filtering open-circuit branch from the lower annular copper-clad sheet to the radiating arm is formed and is used for filtering low-frequency harmonics so as to solve the problem of mutual coupling of high-frequency and low-frequency radiating units.
Description
Technical Field
The utility model relates to the field of mobile communication base station antennas, in particular to a high-frequency radiation unit and a base station antenna.
Background
With the continuous development of mobile communication technology, multi-frequency multi-standard multi-port base station antennas are applied more and more. In a multi-frequency antenna, high and low frequencies are commonly used to distinguish frequency bands, generally, a frequency range of 698MHz to 960MHz is defined as a low frequency band, and a frequency range of 1710MHz to 2690MHz is defined as a high frequency band. In order to ensure performance indexes in each frequency band, a conventional multi-frequency and multi-port antenna often divides high and low frequencies separately, so that the overall antenna is too large in size and too high in cost; with the development of the base station antenna towards miniaturization and light weight, the multi-frequency multi-port antenna enables high and low frequency radiation units to be placed in a staggered mode or placed coaxially to form an effective solution, the space size is effectively utilized, the cost is reduced, however, the problem of serious high and low frequency coupling interference can be caused by the staggered placement or the coaxial placement, the efficiency of the whole system is reduced due to the fact that directional diagram indexes are seriously affected, and the performance is unstable. Therefore, it is necessary to design a high frequency radiating element that can filter low frequency harmonics and has little interference with the low frequency radiating element.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims to provide a high-frequency radiation unit capable of filtering low-frequency harmonics and a base station antenna, so as to solve the problem of mutual coupling caused by too close distance of high-frequency and low-frequency radiation units in a multi-frequency multi-port antenna.
The technical scheme is as follows: in order to achieve the above object, the present invention provides a high frequency radiation unit comprising: radiation face, feed unit and filtering ground module. The radiation surface comprises two groups of polarized orthogonally arranged dipoles, and the two groups of orthogonally arranged dipoles form four radiation arms for radiating electromagnetic wave signals; the feeding unit comprises a coaxial cable and a metal supporting rod, and the coaxial cable and the metal supporting rod of the feeding unit are connected with the four radiating arms on the radiating surface and feed; the filtering grounding module comprises an upper copper-clad surface, a lower copper-clad surface and a middle medium substrate, wherein the upper copper-clad surface comprises a round copper-clad sheet and a copper-clad filtering grounding wire which are connected; the lower copper-clad surface comprises a circular copper-clad sheet and an annular copper-clad sheet which surrounds the circular copper-clad sheet, the circular copper-clad sheet and the annular copper-clad sheet are independent and not in contact with each other, and the copper-clad filter grounding wire and the annular copper-clad sheet are mutually conducted through a through hole; the coaxial cable and the metal support rod on the feed unit are connected with the upper circular copper-clad sheet and the lower circular copper-clad sheet on the filtering grounding module so as to form a balance-unbalance exchanger.
Further, the two groups of orthogonally arranged dipoles each comprise two opposite radiating arms, and the four radiating arms are arranged in a surrounding manner so that the two opposite radiating arms feed in a surrounding central area.
Furthermore, the coaxial cable and the metal support rod of the feed unit are connected with the four radiating arms in a welding mode, and two opposite radiating arms in each group of dipoles are respectively connected with one coaxial cable and one opposite metal support rod.
Furthermore, the coaxial cable and the metal support rod in the feed unit are simultaneously connected with the upper layer of circular copper-clad sheet and the lower layer of circular copper-clad sheet on the filtering grounding module in a welding mode, so that a balance-unbalance exchanger is formed below the radiation arm.
Furthermore, the radiation arm is connected with the coaxial cable and the metal supporting rod in a welding mode, the coaxial cable and the metal supporting rod are also connected with an upper-layer circular copper-clad sheet on the filtering grounding module in a welding mode, the upper-layer circular copper-clad sheet is connected with an upper-layer copper-clad filtering grounding wire, the upper-layer copper-clad filtering wire is connected with a lower-layer annular copper-clad sheet through a through hole, and therefore the lower-layer annular copper-clad sheet is connected with the radiation arm in a conducting mode.
Further, when the high-frequency radiation unit is installed on the reflecting plate, the lower-layer annular copper-covered sheet is in coupling contact with the reflecting plate, so that a filtering open-circuit branch from the lower-layer annular copper-covered sheet to the radiation arm is formed, and low-frequency harmonics of the low-frequency radiation unit also installed on the reflecting plate can be filtered.
A base station antenna comprises a reflecting plate, a plurality of low-frequency radiating elements and a plurality of high-frequency radiating elements, wherein the plurality of low-frequency radiating elements and the plurality of high-frequency radiating elements are arranged on the reflecting plate; the low-frequency radiating units are distributed in the middle of the high-frequency radiating units.
Has the advantages that: compared with the prior art, the upper and lower circular copper-clad sheets on the coaxial cable, the metal support rod and the filtering grounding module in the high-frequency radiation unit are connected to form a balance-unbalance exchanger, and when the high-frequency radiation unit is installed on the reflecting plate, the lower annular copper-clad sheet is coupled with the reflecting plate, so that a filtering open-circuit branch from the lower annular copper-clad sheet to the radiation arm is formed; the radiating unit is particularly used in a multi-frequency antenna, and the filtering branches are formed in a grounding coupling mode to filter low-frequency harmonics, so that the problem of mutual coupling caused by too close distance of high and low frequency radiating units in the multi-frequency antenna is solved.
Drawings
Fig. 1 is a schematic top perspective view of a high-frequency radiating unit according to the present invention.
Fig. 2 is a schematic bottom perspective view of a high-frequency radiating unit according to the present invention.
Fig. 3 is a schematic diagram of a specific arrangement of high-frequency radiating elements according to an embodiment of the present invention.
Detailed Description
The technical scheme of the utility model is further explained by combining the attached drawings.
As shown in fig. 1 and fig. 2, a high-frequency radiating unit disclosed in the embodiment of the present invention includes a radiating surface, a feeding unit, and a filtering ground module. The radiation surface comprises two groups of orthogonally polarized dipoles, wherein the two groups of orthogonally polarized dipoles form four radiation arms (a first radiation arm 101, a second radiation arm 102, a third radiation arm 103 and a fourth radiation arm 104), the first radiation arm 101 and the second radiation arm 102 form one group of dipoles, and the third radiation arm 103 and the fourth radiation arm 104 form the other group of dipoles; the feed unit comprises coaxial cables (a first coaxial cable 201, a second coaxial cable 202) and metal support rods (a first metal support rod 301 and a second metal support rod 302), wherein the coaxial cables (201, 202) and the metal support rods (301, 302) are fixedly connected with four radiation arms (101, 102, 103, 104) in a welding mode, the first radiation arm 101 is welded with the first coaxial cable 201 in an external conduction mode, the second radiation arm 102 is welded with the first metal support rod 301 in an external conduction mode, the third radiation arm 103 is welded with the second coaxial cable 202 in an external conduction mode, and the fourth radiation arm 104 is welded with the second metal support rod 302 in a fourth radiation mode; the filtering grounding module is composed of an upper layer circular copper-clad sheet 401, an upper layer copper-clad grounding wire 402, a middle medium substrate 405, a lower layer circular copper-clad sheet 403 and a lower layer annular copper-clad sheet 404, wherein the upper layer circular copper-clad sheet 401 and the upper layer copper-clad grounding wire 402 are connected into a whole, and the upper layer copper-clad grounding wire 402 and the lower layer annular copper-clad sheet 404 are in conductive connection through a through hole process.
As shown in fig. 1, a first metal support rod 301 is welded to the inner conductor of the first coaxial cable 201 at the upper part of the radiating plane, and a second metal support rod 302 is welded to the inner conductor of the second coaxial cable 202 at the upper part of the radiating plane, so that the central area feeding of the four radiating arms (101, 102, 103, 104) is realized.
As shown in fig. 1 and fig. 2, the outer conductors and the metal support rods (301, 302) of the coaxial cables (201, 202) are connected to the upper layer circular copper-clad sheet 401 and the lower layer circular copper-clad sheet 403 simultaneously by welding, so as to form a balance-unbalance exchanger below the radiating arm, wherein the first coaxial cable 201, the first metal support rod 301, the upper layer circular copper-clad sheet 401 and the lower layer circular copper-clad sheet 403 form a balance-unbalance exchanger of the first radiating arm 101 and the second radiating arm 102, and the second coaxial cable 202, the second metal support rod 302, the upper layer circular copper-clad sheet 401 and the lower layer circular copper-clad sheet 403 form a balance-unbalance exchanger of the third radiating arm 103 and the fourth radiating arm 104.
As shown in fig. 1 and fig. 2, the feeding unit, the radiating surface and the filtering grounding module are connected together by welding, and finally a dual-polarized orthogonal (+/-45 °) high-frequency radiating unit is formed.
As shown in fig. 1 and fig. 2, the lower annular copper-clad sheet 404 is connected with the upper copper-clad ground wire 402 through a through hole process, the upper copper-clad ground wire 402 is connected with the upper circular copper-clad sheet 401, and the metal support rods (301, 302) and the coaxial cables (201, 202) are simultaneously welded on the upper circular copper-clad sheet 401 and the four radiating arms (101, 102, 103, 104), so that the lower annular copper-clad sheet 404 to the four radiating arms (101, 102, 103, 104) are all in a conductive connection state. When the high-frequency radiation unit is installed on the reflecting plate, the lower annular copper-clad sheet 404 is in coupling contact with the reflecting plate, so that a filtering open-circuit branch from the lower annular copper-clad sheet 404 to the radiation arms (101, 102, 103 and 104) is formed, low-frequency harmonics of the low-frequency radiation unit also installed on the reflecting plate can be filtered, and coupling between high frequency and low frequency is reduced.
The embodiment of the utility model discloses a base station antenna, which comprises a reflecting plate, a plurality of low-frequency radiating units and a plurality of high-frequency radiating units, wherein the plurality of low-frequency radiating units and the plurality of high-frequency radiating units are arranged on the reflecting plate; the low-frequency radiating elements are distributed in the middle of the high-frequency radiating elements. The high-frequency radiation unit forms a filtering branch in a grounding coupling mode, so that low-frequency harmonic waves of the low-frequency radiation unit can be filtered.
As shown in fig. 3, the high-frequency radiating unit of the present invention is disposed in the multi-frequency multiport antenna array, and the present invention enables the radiating unit to achieve a filtering effect by smart design, so as to well reduce the coupling between high and low frequencies and ensure the stable performance of the whole antenna.
Claims (7)
1. A high-frequency radiating element characterized by: the electromagnetic wave signal radiation device comprises a radiation surface, a feed unit and a filtering grounding module, wherein the radiation surface comprises two groups of dipoles with orthogonal polarization, and the two groups of dipoles with orthogonal polarization form four radiation arms for radiating electromagnetic wave signals; the feeding unit comprises a coaxial cable and a metal supporting rod, and the coaxial cable and the metal supporting rod of the feeding unit are connected with the four radiating arms on the radiating surface and feed; the filtering grounding module comprises an upper copper-clad surface, a lower copper-clad surface and a middle medium substrate, wherein the upper copper-clad surface comprises a round copper-clad sheet and a copper-clad filtering grounding wire which are connected; the lower copper-clad surface comprises a circular copper-clad sheet and an annular copper-clad sheet which surrounds the circular copper-clad sheet, the circular copper-clad sheet and the annular copper-clad sheet are independent and not in contact with each other, and the copper-clad filter grounding wire and the annular copper-clad sheet are mutually conducted through a through hole; the coaxial cable and the metal support rod on the feed unit are connected with the upper circular copper-clad sheet and the lower circular copper-clad sheet on the filtering grounding module so as to form a balance-unbalance exchanger.
2. The high-frequency radiating unit according to claim 1, characterized in that: the two groups of orthogonally arranged dipoles each comprise two opposite radiating arms, and the four radiating arms are arranged in a surrounding mode so that the two opposite radiating arms feed in a surrounding central area.
3. The high-frequency radiating unit according to claim 2, characterized in that: the coaxial cable and the metal support rod of the feed unit are connected with the four radiating arms in a welding mode, and two opposite radiating arms in each group of dipoles are respectively connected with one coaxial cable and one opposite metal support rod.
4. The high-frequency radiating unit according to claim 3, characterized in that: the coaxial cable and the metal support rod in the feed unit are simultaneously connected with the upper layer of circular copper-clad sheet and the lower layer of circular copper-clad sheet on the filtering grounding module in a welding mode, so that a balance-unbalance exchanger is formed below the radiation arm.
5. The high-frequency radiating unit according to claim 4, characterized in that: the radiating arm is connected with a coaxial cable and a metal supporting rod in a welding mode, the coaxial cable and the metal supporting rod are connected with an upper-layer circular copper-clad sheet on the filtering grounding module in a welding mode, the upper-layer circular copper-clad sheet is connected with an upper-layer copper-clad filtering grounding wire, the upper-layer copper-clad filtering grounding wire is connected with a lower-layer annular copper-clad sheet through a through hole, and the lower-layer annular copper-clad sheet is connected with the radiating arm in a conducting mode.
6. The high-frequency radiating unit according to claim 5, characterized in that: when the high-frequency radiation unit is installed on the reflecting plate, the lower-layer annular copper-covered sheet is in coupling contact with the reflecting plate, so that a filtering open-circuit branch from the lower-layer annular copper-covered sheet to the radiation arm is formed, and low-frequency harmonics of the low-frequency radiation unit which is also installed on the reflecting plate can be filtered.
7. A base station antenna, characterized by: the antenna comprises a reflecting plate, a plurality of low-frequency radiating units and a plurality of high-frequency radiating units according to any one of claims 1 to 6, wherein the plurality of low-frequency radiating units and the plurality of high-frequency radiating units are arranged on the reflecting plate; the low-frequency radiating units are distributed in the middle of the high-frequency radiating units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122203277.2U CN216161926U (en) | 2021-09-13 | 2021-09-13 | High-frequency radiation unit and base station antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122203277.2U CN216161926U (en) | 2021-09-13 | 2021-09-13 | High-frequency radiation unit and base station antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216161926U true CN216161926U (en) | 2022-04-01 |
Family
ID=80848852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122203277.2U Active CN216161926U (en) | 2021-09-13 | 2021-09-13 | High-frequency radiation unit and base station antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216161926U (en) |
-
2021
- 2021-09-13 CN CN202122203277.2U patent/CN216161926U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201655979U (en) | Combined type multi-input multi-output antenna module and system thereof | |
| WO2021139205A1 (en) | Massive mimo antenna | |
| CN1168180C (en) | Apparatus for suppressing mutual interference between antennas | |
| CN210443665U (en) | Radiating unit with 880-960MHz band filtering characteristic and base station antenna | |
| CN108155484B (en) | Broadband dual-polarized wall-mounted antenna | |
| CN103390795B (en) | A kind of directional diagram has the antenna of multiple restructural characteristic | |
| CN114122718B (en) | Low-frequency oscillator unit and hybrid array antenna | |
| US20110001678A1 (en) | Antenna Array | |
| CN208589539U (en) | A kind of low section, miniaturization, high-isolation dual-polarized patch antenna unit | |
| WO2021232820A1 (en) | Base station antenna and high-frequency radiation unit therefor | |
| WO2021133577A1 (en) | Radiating element, antenna assembly and base station antenna | |
| CN115663460A (en) | Common-caliber radiating element and antenna | |
| WO2022053156A1 (en) | Antenna device, array of antenna devices, and base station with antenna device | |
| CN217062497U (en) | High-frequency radiation unit with filter characteristic and antenna | |
| CN114122717B (en) | Miniaturized low-frequency oscillator unit and antenna array | |
| CN216161926U (en) | High-frequency radiation unit and base station antenna | |
| CN113871842A (en) | Radiating element, antenna assembly and base station antenna | |
| CN111180884A (en) | Broadband dual-polarization base station antenna unit and MIMO antenna | |
| CN111786092A (en) | +/-45-degree dual-polarized radiation device with radiation arms placed in horizontal and vertical directions | |
| CN114122700B (en) | Vibrator and base station antenna | |
| CN211045708U (en) | Radiating element, antenna assembly and base station antenna | |
| CN114267943B (en) | Dual polarized antenna unit and radiating assembly | |
| CN220189875U (en) | Small-sized 5G antenna | |
| CN211150754U (en) | FAD electric tilt antenna | |
| CN211829212U (en) | 5G array antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |