CN108461930B - Dual-polarized omnidirectional antenna - Google Patents
Dual-polarized omnidirectional antenna Download PDFInfo
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- CN108461930B CN108461930B CN201810283974.3A CN201810283974A CN108461930B CN 108461930 B CN108461930 B CN 108461930B CN 201810283974 A CN201810283974 A CN 201810283974A CN 108461930 B CN108461930 B CN 108461930B
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- microstrip
- power divider
- omnidirectional antenna
- microstrip radiating
- radiating
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- 230000010287 polarization Effects 0.000 claims abstract description 16
- 238000002955 isolation Methods 0.000 claims abstract description 11
- 230000009977 dual effect Effects 0.000 claims abstract description 10
- 239000000758 substrate Substances 0.000 claims description 11
- 230000005855 radiation Effects 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 210000003734 kidney Anatomy 0.000 claims description 2
- 230000005284 excitation Effects 0.000 abstract description 4
- 238000010295 mobile communication Methods 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005388 cross polarization Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
- H01Q3/06—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation over a restricted angle
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention discloses a dual-polarized omnidirectional antenna, which is characterized by comprising a bracket, a power divider, a dial, an omnidirectional antenna base and a plurality of microstrip radiating units, wherein the power divider, the dial, the omnidirectional antenna base and the microstrip radiating units are arranged on the bracket, the microstrip radiating units realize positive and negative 45-degree dual polarization in a dual-port excitation mode, the microstrip radiating units, the power divider, the dial and the omnidirectional antenna base are sequentially arranged from top to bottom, and at least three microstrip radiating units are connected with the microstrip power divider to form an array. The invention has the characteristics of compact structure, high isolation without adding additional isolation measures and easy integration, and can be used for mobile communication terminal equipment.
Description
Technical Field
The invention relates to the technical field of mobile communication, in particular to an omnidirectional antenna.
Background
Wireless communication technologies are changing more and more, and there is a need for higher communication capacity and information transfer rates in communication systems. An omni-directional antenna is generally applied to a station system of suburban county and regional system in a mobile communication system, and has a large coverage area. An omni-directional antenna, i.e. one which exhibits a uniform radiation of 360 degrees in the horizontal pattern, i.e. so-called non-directivity, exhibits a beam of a certain width in the vertical pattern, in general the smaller the lobe width the higher the gain. The omnidirectional antenna is formed by the microstrip antenna, and has the advantages of simple structure, low processing cost and light weight, and becomes a key technology in the field of antennas in recent years; the microstrip antenna is formed by attaching one surface of a thin dielectric substrate to a metal thin layer as a grounding plate, manufacturing a metal patch with a certain shape on the other surface in a corrosion mode, and feeding the patch with a microstrip line or a coaxial probe; when the antenna is in the shape of a slender strip, the microstrip element antenna is adopted, and when the patch is an area unit, the microstrip antenna is adopted. The microstrip patch and the grounding plate form a common microstrip transmission line for transmitting TEM waves, and the transmission direction of the waves is determined by a feed point. The transmission direction of the field is the standing wave distribution. The existing dual-polarized omnidirectional antenna mainly comprises vertical polarization and horizontal polarization, when level test is generally accepted, the acceptance efficiency of vertical polarization is higher than that of horizontal polarization, when horizontal polarization works, each oscillator is parallel to the ground, the high-frequency equivalent distributed capacitance of the antenna is larger than that when the antenna is vertical, the impedance of the antenna to the reference ground is reduced due to the increase of the equivalent distributed capacitance, when the electromagnetic induction is conducted by the antenna with the same field intensity in the horizontal and vertical directions, the voltage generated by the corresponding antenna polarization is reduced, so that the wave impedance is inconsistent with the vertical direction, the acceptance efficiency is different from the vertical direction, and the defect is avoided by positive and negative 45-degree polarization.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides the dual-polarized omnidirectional antenna which is simple in structure, compact in size and high in isolation.
The invention adopts the following technical proposal to realize the aim: a dual-polarized omnidirectional antenna is characterized by comprising a bracket, a power divider, a dial, an omnidirectional antenna base and a plurality of microstrip radiating units, wherein the power divider, the dial, the omnidirectional antenna base and the microstrip radiating units are arranged on the bracket, the microstrip radiating units realize positive and negative 45-degree dual polarization in a dual-port excitation mode, the microstrip radiating units, the power divider, the dial and the omnidirectional antenna base are sequentially arranged from top to bottom, and at least three microstrip radiating units are connected with the microstrip power divider to form an array.
As a further explanation of the scheme, the microstrip radiating element comprises a base layer and a guide layer which are arranged in parallel, the base layer and the guide layer are respectively in the form of a PCB, the base layer is provided with a substrate radiating piece, the guide layer is covered with a copper layer corresponding to the substrate radiating piece, and the distance between the guide layer and the substrate radiating layer is 4-6mm so as to form secondary resonance, optimize in-band matching and improve gain of a directional diagram in a frequency band.
The base layer of the microstrip oscillator adopts a PCB with low dielectric constant, the guide layer adopts an inexpensive FR4 board, the microstrip oscillator realizes standing wave 1.5 within the frequency band 3400MHz-3800MHz through width and length adjustment of the microstrip line and size and height adjustment of the guide layer, and the isolation degree is more than 23 dB.
Further, the number of the microstrip radiating elements is three, the three microstrip radiating elements are distributed in a triangular mode, an included angle between every two adjacent microstrip radiating elements is 60 degrees, an array antenna is formed by combining the microstrip radiating elements with the power divider, and meanwhile, the three microstrip radiating elements are located at a certain height from the power divider for maintaining the electrical performance index.
The power divider is a one-to-three microstrip power divider, the power dividers are in parallel connection, the power divider plates equally distribute power to three microstrip units, two microstrip power dividers are made on one PCB for saving space, and each microstrip power divider is connected with three microstrip radiation units with the same polarization.
Further, the number of the microstrip radiating elements is four, the four microstrip radiating elements are distributed in four corners, the included angle between two adjacent microstrip radiating elements is 90 degrees, and an array antenna is formed by combining the microstrip radiating elements with a power divider; the power divider is a one-to-four power divider.
Further, the microstrip radiating element is parallel to the vertical direction, and the microstrip radiating element is rectangular.
The microstrip power divider and the microstrip radiating element are welded together by adopting a 50 ohm coaxial cable.
The omnidirectional antenna base is a magnetic disk, and the support is continuously adjustable within a range of plus or minus 90 degrees in the vertical direction.
The overall size of the omnidirectional antenna is (phi 60) mm (205) mm, and in an antenna with similar performance, the volume is greatly compressed; the frequency band range is 3400MHz to 3800MHz, the isolation of the antenna is 20dB under the condition of not adding other measures, and the gain is more than 2dBi.
Further, be provided with angle modulation installation component on the calibrated scale, realize that just degree 90 degrees angles are adjustable in the vertical direction, realize that the antenna is rotatory at the vertical direction big angle, open kidney slot and corresponding angle modulation screw above angle modulation component.
Further, a positioning plate is arranged above the microstrip radiating unit and fixedly connected with the bracket, the positioning plate is provided with a plurality of jacks, and a plug matched with the jacks in a plugging manner is arranged on the upper part of the microstrip radiating unit.
The beneficial effects achieved by adopting the technical proposal of the invention are as follows:
according to the invention, a plurality of microstrip radiating elements sequentially rotate around a vertical normal to form multiple planes, wherein each microstrip radiating element is in an excitation mode of positive and negative 45-degree dual polarization, the microstrip radiating elements are connected with a microstrip power divider to form an array, lower out-of-roundness is realized in the horizontal plane direction, the arrangement mode of the vibrators can enable the two polarizations to realize higher isolation, and the horizontal plane cross polarization ratio of the antenna can also reach more than 6 dB.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an antenna according to the present invention;
fig. 2 is a schematic diagram of a microstrip antenna unit structure according to the present invention;
FIG. 3 is a schematic diagram of a microstrip power divider according to the present invention;
FIG. 4 is a schematic view of a bracket structure according to the present invention;
fig. 5 is a schematic structural view of embodiment 2;
fig. 6 is a graph of antenna gain according to the present invention;
fig. 7 is a standing wave diagram of an antenna of the present invention.
Reference numerals illustrate: 1. the antenna comprises a microstrip antenna unit 1-1, a base layer 1-2, a guiding layer 2, a power divider 3, a dial 4, a bracket 4-1, an upright post 4-2, a supporting plate 4-3, an underframe 4-4, a fixing bolt 5, an omnidirectional antenna base 6, a positioning plate 6-1 and jacks.
Detailed Description
The present technical solution is described in detail below with reference to specific embodiments.
Example 1
As shown in fig. 1-4, the antenna is integrally composed of three microstrip antenna units 1, a power divider 2, a dial 3, a bracket 4 and an omnidirectional antenna base 5; the bracket is a plastic fixing piece. The three microstrip radiating elements are distributed in a triangular mode, an included angle between every two adjacent microstrip radiating elements is 60 degrees, an array antenna is formed by combining the microstrip radiating elements with the power divider, and the microstrip radiating elements are connected with the power divider through a 50 ohm coaxial line. The upper part of the microstrip radiating element is provided with a locating plate 6 which is fixedly connected with the bracket, the locating plate is provided with a plurality of jacks 6-1, and the upper part of the microstrip radiating element is provided with a plug which is matched with the jacks in a plugging way. The bracket comprises a plurality of upright posts 4-1 which are vertically arranged on the power divider, a supporting plate 4-2 which is fixed on the upright posts, and an underframe 4-3 which is supported at the bottom of the power divider, and the microstrip radiation unit is supported on the supporting plate; the chassis is fixed on the omnidirectional antenna base, the dial is arranged on the chassis, so that the microstrip antenna unit, the power divider and the dial are sequentially and vertically arranged, the structure is compact, the whole volume of the antenna is greatly reduced, and the high isolation degree is realized without additionally increasing isolation measures in combination with the distribution mode of the vibrators; the chassis is U-shaped, is connected with fixing bolt 4-4 between the both sides board of chassis, and the both sides of chassis set up the calibrated scale respectively, and both sides calibrated scale corresponds each other and is connected fixedly with the chassis through fixing bolt.
The microstrip radiating element 1 comprises a base layer 1-1 and a guide layer 1-2 which are arranged in parallel, wherein the base layer and the guide layer are respectively in the form of a PCB (printed circuit board), a substrate radiating sheet is arranged on the base layer, a copper layer corresponding to the substrate radiating sheet is covered on the guide layer, and the distance between the guide layer and the substrate radiating layer is 4-6mm so as to form secondary resonance, optimize in-band matching and improve the gain of a directional diagram in a frequency band. The base layer adopts a PCB with a dielectric constant of 2.65, the microstrip radiating element is rectangular, positive and negative 45-degree polarization is realized by adopting double-port excitation, the PCB of the guiding layer is covered with a copper layer with the same size as the radiating sheet of the substrate, the working frequency range is 3400MHz to 3800MHz, and the isolation degree is more than 23 dB.
As shown in fig. 3, 2 power dividers are integrated on a PCB board, wherein each power divider is correspondingly connected with three radiating oscillators, so as to realize one polarization, the PCB adopts a dielectric layer with a dielectric constant of 2.6, and standing waves below 1.2 can be simulated for the power dividers alone.
As shown in fig. 4, the angle adjusting installation assembly can realize the internal rotation of 90 degrees of vertical angle, a kidney-shaped groove is formed on the bracket, and a butterfly screw is adopted as the screw.
The overall size of the omnidirectional antenna is (phi 60) mm (205) mm, and in an antenna with similar performance, the volume is greatly compressed; the frequency band range is 3400MHz to 3800MHz, the isolation of the antenna is 20dB under the condition of not adding other measures, and the gain is more than 2dBi.
Example 2
As shown in fig. 5, in this embodiment, the number of microstrip radiating elements is four, the four microstrip radiating elements are distributed in four corners, and an included angle between two adjacent microstrip radiating elements is 90 degrees, and an array antenna is formed by combining the microstrip radiating elements with a power divider; the power divider is a one-to-four power divider.
As shown in fig. 6 and 7, the gain diagram and standing wave diagram of the antenna are that the gain of the antenna horizontal plane reaches more than 2dBi, and the standing wave is within 1.8.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present invention.
Claims (8)
1. A dual-polarized omnidirectional antenna is characterized by comprising a bracket, a power divider, a dial, an omnidirectional antenna base and at least three microstrip radiating units, wherein the power divider, the dial, the omnidirectional antenna base and the at least three microstrip radiating units are arranged on the bracket; the microstrip radiating unit comprises a base layer and a guide layer which are arranged in parallel, wherein the base layer and the guide layer are respectively in the form of a PCB (printed circuit board), a substrate radiating sheet is arranged on the base layer, a copper layer corresponding to the substrate radiating sheet is covered on the guide layer, and the distance between the guide layer and the substrate radiating layer is 4-6mm;
the microstrip radiating element is parallel to the vertical direction and is rectangular; the microstrip radiation unit is connected with the power divider through a 50 ohm coaxial line; a positioning plate is arranged above the microstrip radiating unit and fixedly connected with the bracket, the positioning plate is provided with a plurality of jacks, and the upper part of the microstrip radiating unit is provided with a plug which is in plug-in fit with the jacks; the support comprises a plurality of upright posts vertically arranged on the power divider, a support plate fixed on the upright posts, and a bottom frame supported at the bottom of the power divider, and the microstrip radiation unit is supported on the support plate; the chassis is fixed on the omnidirectional antenna base, the dial is arranged on the chassis, so that the microstrip antenna unit, the power divider and the dial are sequentially and vertically arranged, the chassis is U-shaped, fixing bolts are connected between two side plates of the chassis, the dials are respectively arranged on two sides of the chassis, and the dials on two sides correspond to each other and are fixedly connected with the chassis through the fixing bolts; and 2 power dividers are integrated on one PCB to form a successful divider board, and each microstrip radiating unit comprises radiating oscillators, wherein each power divider is correspondingly connected with three radiating oscillators to realize one polarization.
2. The dual polarized omnidirectional antenna of claim 1, wherein the number of the microstrip radiating elements is three, the three microstrip radiating elements are distributed in a triangular shape, the included angle between two adjacent microstrip radiating elements is 60 degrees, the array antenna is formed by combining the adjacent microstrip radiating elements with the power divider, and the heights between the three microstrip radiating elements and the power divider are provided.
3. The dual polarized omnidirectional antenna of claim 1 wherein the power divider is a three microstrip power divider, the power dividers are in parallel, the power divider board is configured to equally distribute power to three microstrip radiating elements, the two microstrip power dividers are formed on the same PCB board, and each microstrip power divider is connected to three microstrip radiating elements of the same polarization.
4. The dual polarized omnidirectional antenna of claim 1, wherein the number of the microstrip radiating elements is four, the four microstrip radiating elements are distributed in four corners, the included angle between two adjacent microstrip radiating elements is 90 degrees, and the array antenna is formed by combining the microstrip radiating elements with the power divider; the power divider is a one-to-four power divider.
5. The dual polarized omnidirectional antenna of claim 1, wherein the microstrip radiating element is parallel to the vertical direction and the microstrip radiating element is rectangular.
6. The dual polarized omnidirectional antenna of claim 1, wherein the omnidirectional antenna base is a magnetic disk.
7. The dual polarized omnidirectional antenna of claim 1, wherein the omnidirectional antenna has a frequency range of 3400MHz to 3800MHz, an isolation of 20dB, and a gain of greater than 2dBi.
8. The dual polarized omnidirectional antenna of claim 1, wherein the dial is provided with an angle adjusting assembly, and the angle adjusting assembly is provided with a kidney slot and corresponding angle adjusting screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810283974.3A CN108461930B (en) | 2018-04-02 | 2018-04-02 | Dual-polarized omnidirectional antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810283974.3A CN108461930B (en) | 2018-04-02 | 2018-04-02 | Dual-polarized omnidirectional antenna |
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| Publication Number | Publication Date |
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| CN108461930A CN108461930A (en) | 2018-08-28 |
| CN108461930B true CN108461930B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810283974.3A Active CN108461930B (en) | 2018-04-02 | 2018-04-02 | Dual-polarized omnidirectional antenna |
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| CN (1) | CN108461930B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777704A (en) * | 2010-02-21 | 2010-07-14 | 摩比天线技术（深圳）有限公司 | Indoor omnidirectional antenna |
| CN103247868A (en) * | 2013-05-03 | 2013-08-14 | 佛山市健博通电讯实业有限公司 | Multi-band broadband dual-polarization LTE omnidirectional antenna |
| KR20130134793A (en) * | 2012-05-31 | 2013-12-10 | 엘에스전선 주식회사 | Dual polarization dipole antenna for dual-band and antenna array using it |
| CN103811857A (en) * | 2014-01-21 | 2014-05-21 | 盛宇百祺（南京）通信技术有限公司 | Vertical polarization omnidirectional antenna and 4G dual polarization omnidirectional ceiling antenna with same |
| CN208111699U (en) * | 2018-04-02 | 2018-11-16 | 广东盛路通信科技股份有限公司 | A kind of dual-polarization omnidirectional antenna |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9490535B2 (en) * | 2014-06-30 | 2016-11-08 | Huawei Technologies Co., Ltd. | Apparatus and assembling method of a dual polarized agile cylindrical antenna array with reconfigurable radial waveguides |
| EP3255726A3 (en) * | 2016-06-09 | 2018-03-07 | Amphenol Antenna Solutions Inc. | Rail mount stadium antenna for wireless mobile communications |
-
2018
- 2018-04-02 CN CN201810283974.3A patent/CN108461930B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777704A (en) * | 2010-02-21 | 2010-07-14 | 摩比天线技术（深圳）有限公司 | Indoor omnidirectional antenna |
| KR20130134793A (en) * | 2012-05-31 | 2013-12-10 | 엘에스전선 주식회사 | Dual polarization dipole antenna for dual-band and antenna array using it |
| CN103247868A (en) * | 2013-05-03 | 2013-08-14 | 佛山市健博通电讯实业有限公司 | Multi-band broadband dual-polarization LTE omnidirectional antenna |
| CN103811857A (en) * | 2014-01-21 | 2014-05-21 | 盛宇百祺（南京）通信技术有限公司 | Vertical polarization omnidirectional antenna and 4G dual polarization omnidirectional ceiling antenna with same |
| WO2015109995A1 (en) * | 2014-01-21 | 2015-07-30 | Supeq(Nanjing) Communication Technologies Co., Ltd. | Vertically polarized omni-directional antenna and 4g dual polarized omni-directional ceiling antenna having the same |
| CN208111699U (en) * | 2018-04-02 | 2018-11-16 | 广东盛路通信科技股份有限公司 | A kind of dual-polarization omnidirectional antenna |
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| Publication number | Publication date |
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| CN108461930A (en) | 2018-08-28 |
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