CN109687114B - Communication antenna and dual-polarized broadband radiating element thereof - Google Patents
Communication antenna and dual-polarized broadband radiating element thereof Download PDFInfo
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- CN109687114B CN109687114B CN201910064141.2A CN201910064141A CN109687114B CN 109687114 B CN109687114 B CN 109687114B CN 201910064141 A CN201910064141 A CN 201910064141A CN 109687114 B CN109687114 B CN 109687114B
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- 238000004891 communication Methods 0.000 title claims abstract description 25
- 230000005855 radiation Effects 0.000 claims abstract description 25
- 230000009977 dual effect Effects 0.000 claims abstract description 14
- 230000008878 coupling Effects 0.000 claims abstract description 5
- 238000010168 coupling process Methods 0.000 claims abstract description 5
- 238000005859 coupling reaction Methods 0.000 claims abstract description 5
- 230000010287 polarization Effects 0.000 claims abstract description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005388 cross polarization Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/106—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using two or more intersecting plane surfaces, e.g. corner reflector antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
A communication antenna and its dual polarization broadband radiation unit, the radiation unit includes the support column that the balance-unbalance converter forms and two symmetrical radiation oscillators, every symmetrical radiation oscillator is made up of two symmetrical oscillator arms, two symmetrical radiation oscillators are orthogonal arrangement, there is the coupling gap between the adjacent oscillator arms, the oscillator arm is the frame type structure of fretwork, its fretwork part is equipped with the open circuit branch festival, in two oscillator walls of the same symmetrical radiation oscillator, one end of the open circuit branch festival is connected as an organic wholely with two opposite one sides of oscillator arms, another end extends towards two direction that the oscillator arm deviates from mutually. On the basis that the oscillator arms form two orthogonal symmetrical radiating oscillators, triangular open-circuit branches are additionally arranged in each oscillator arm of the hollow frame-shaped structure, the open-circuit branches in the two symmetrical oscillator arms form small symmetrical oscillator radiation, a resonance mode is added, one more resonance point is added for the radiating unit, and the bandwidth of the radiating unit is expanded, so that broadband radiation is realized.
Description
Technical Field
The invention relates to a communication antenna, in particular to a dual-polarized broadband radiating element of the communication antenna and the communication antenna using the radiating element.
Background
With the rapid development of mobile communication, the coexistence situation of 3G and 4G networks has matured, and various communication systems have different operating frequency bands, and the operating frequency of the smart antenna in the 3G network TD-SCDMA, WCDMA, CDMA2000 with the partial communication frequency band of 1710~2145MHz, TD-SCDMA/LTE network is 1880-1920MHz,2010-2025MHz,2300-2400MHz,2500-2690MHz. In the two modes of TDD and FDD in the 4G network, the partial communication frequency bands included in the network are 1427-1660 MHz and 1710-2145MHz.
Under the condition that multiple network systems coexist, in order to save the installation resources of a base station and reduce the cost of network construction, a communication system scheme combining multiple network systems is preferred, so that the communication antenna is required to work in an ultra-wide frequency band, and the compatibility requirement of the antenna on different network system frequency bands is met.
Disclosure of Invention
The invention aims to solve the technical problem of improving the bandwidth of an antenna radiating unit so as to meet the compatibility requirement of the antenna on different network system frequency bands.
The technical scheme adopted by the invention for solving the technical problems is as follows: a dual polarization broadband radiation unit of a communication antenna comprises a support column formed by a balance-unbalance converter and two symmetrical radiation vibrators arranged on the support column, wherein each symmetrical radiation vibrator consists of two symmetrical vibrator arms, the two symmetrical radiation vibrators are arranged in an orthogonal mode, a coupling gap is arranged between adjacent vibrator arms in the two symmetrical radiation vibrators, each vibrator arm is of a hollowed frame-shaped structure, an open-circuit branch joint extending from the inner wall of the frame-shaped structure to the center is arranged in the hollowed-out part of the vibrator arm, one end of each open-circuit branch joint is connected with one side opposite to the two vibrator arms into a whole, and the other end of each open-circuit branch joint extends towards the direction opposite to the two vibrator arms.
The two symmetrical radiating oscillators are respectively fed by two orthogonal feeding sheets which are arranged up and down.
Adjacent dipole arms of the two symmetrical radiating elements are symmetrical relative to the central axis plane of the radiating element.
The maximum distance between adjacent dipole arms in two symmetrical radiating elements is about 2/5 of the operating wavelength.
The balun forms support columns with a height of 1/4 of the operating wavelength.
The open branch joint is triangular, rectangular or trapezoidal.
The width of the open branch joint gradually decreases from the inner wall of the vibrator arm frame-type structure to the extending end of the vibrator arm frame-type structure.
A communication antenna having the radiating element includes a reflecting plate and the radiating element arranged in an array on the reflecting plate.
The spacing between adjacent radiating elements on the reflector plate is 0.8 times the operating wavelength.
The edge of the reflecting plate is provided with two layers of boundary strips.
The beneficial effects of the invention are as follows: on the basis that two groups of symmetrical oscillator arms form two orthogonal symmetrical radiating oscillators, open-circuit branches are additionally arranged in each oscillator arm of the hollow frame-shaped structure, the open-circuit branches in the two symmetrical oscillator arms form small symmetrical oscillator radiation, a resonance mode is added, one more resonance point is added for the radiating unit, the bandwidth of the radiating unit is expanded, broadband radiation is realized, and the working frequency range of the antenna is greatly improved compared with that of a conventional dual-polarized radiating unit. Therefore, the dual-polarized broadband radiating unit disclosed by the invention can use a plurality of frequency band networks, realizes the compatibility of the antenna to different network type frequency bands, and greatly increases the reuse rate of the antenna.
The balanced-unbalanced converter forms a support column and supports the radiation surface of the whole radiation unit, and can convert unbalanced coaxial feed into balanced feed, ensure symmetry of a directional diagram and improve cross polarization and isolation.
Drawings
Fig. 1 is a schematic perspective view of a dual polarized broadband radiating element of the present invention.
Fig. 2 is a front view of the dual polarized broadband radiating element of the present invention.
Fig. 3 is an embodiment of a communication antenna employing dual polarized broadband radiating elements of the present invention.
The marks in the figure: 1. 2: a symmetrical radiating element; 1a, 1b, 2a, 2b: a vibrator arm; 3. a balun; 4. a feeding sheet; 5a, 5b, 5c, 5d: open branch; 6. a coupling slit 7, a reflecting plate; 8. a radiation unit; 9. boundary strips.
Detailed Description
Embodiments of the present invention will be specifically described below with reference to examples.
The dual polarized broadband radiating element of the present invention comprises a balun 3 and two dipoles 1, 2. A support column formed by a balun 3, on which two dipoles 1, 2 are arranged. Both dipoles 1 and 2 consist of two dipole arms. As shown in fig. 1, a dipole 1 is composed of dipole arms 1a, 1b which are symmetrical, and a dipole 2 is composed of dipole arms 2a, 2b which are symmetrical. The two symmetrical radiating oscillators 1, 2 are arranged in an orthogonal manner and are fed by two orthogonal and up-down arranged feeding sheets 4 respectively. A coupling gap 6 is provided between adjacent ones of the two dipole arms 1, 2, for example between the dipole arm 1a and the dipole arm 2a, or between the dipole arm 2a and the dipole arm 1 b. The two orthogonal dipoles 1, 2 form an orthogonal dual polarized radiating element. The maximum distance between adjacent dipole arms in two symmetrical radiating elements is about 2/5 of the operating wavelength. The distance from the leftmost end to the rightmost end in the embodiment shown in fig. 2 is 2/5 of the operating wavelength.
In the present invention, as shown in fig. 1, the vibrator arms 1a, 1b, 2a, 2b are hollow frame structures, and in the embodiment of fig. 1, rectangular frame structures are adopted, and adjacent vibrator arms in two symmetrical radiating vibrators are symmetrical with respect to a central axis plane of the radiating unit, that is, the vibrator arms 1a and 2a, and 2a and 1b are symmetrical. Open-circuit branch joints extending from the inner wall of the frame-type structure to the center are additionally arranged in the hollowed-out part of the vibrator arm, for example, open-circuit branch joints 5a, 5b, 5c and 5d are correspondingly arranged in the vibrator arms 1a, 2a, 1b and 2b respectively. In two oscillator walls of the same symmetrical radiating oscillator, one end of the open-circuit branch joint is connected with one side opposite to the two oscillator arms into a whole, and the other end extends towards the direction opposite to the two oscillator arms. For example, as shown in fig. 1, one diagonal line of the rectangular vibrator arms 1a and 1b overlaps with the center line of the dipole, and along the center line of the dipole, the corners of the rectangular vibrator arms 1a and 1b toward the center are disposed opposite to each other, and the corners toward the outside are away from each other. Open-circuit branch joints 5a and 5c are respectively arranged in the hollowed-out parts of the vibrator arms 1a and 1b, one end of the open-circuit branch joint, which is positioned at the center of the symmetrical radiating vibrator, is integrally connected with the vibrator arm, and the other end of the open-circuit branch joint extends outwards along the central line of the symmetrical radiating vibrator.
The open stubs 5a and 5c are arranged in one group, 5b and 5d are arranged in one group, and the two groups are also arranged in an orthogonal mode. A pair of open-circuit stubs added in a symmetrical radiating oscillator formed by a pair of oscillator arms form a resonance mode, one resonance point is added for the radiating unit, the bandwidth of the radiating unit is expanded, and the relative bandwidth can reach 61%.
The frequency of the resonance point can be adjusted by changing the shape and the length of the open branch, so that the required bandwidth direction is realized. The open stub may be provided in the form of a triangle, rectangle, trapezoid, etc. as desired. In the embodiment shown in the drawings, the width of the open stub gradually decreases from the inner wall of the vibrator arm frame-type structure to the extension end thereof. For example, the open branch is set to be a triangle, one vertex angle of the triangle faces the direction of deviating from the two vibrator arms, and the bottom edge opposite to the vertex angle is connected with the vibrator arms. The vertex angle of the triangular open-circuit branch joint can also be set to be in a non-sharp angle form, and is truncated into a bald surface at the top end of the triangular open-circuit branch joint to form a trapezoid-like structure.
The balun 3 is formed by a support column connected to the two pairs of vibrator arms 1a, 1b, 2a, 2b, and structurally plays a role of supporting the whole radiation electromagnetic wave part, and has a height of about 1/4 of the operating wavelength. In principle, the coaxial line is formed by short circuit, unbalanced feed of the coaxial line can be converted into balanced feed, and symmetry of the directional diagram is ensured.
Fig. 3 is an embodiment of a communication antenna employing the radiation unit, which includes a reflection plate 7 and the radiation unit 8 arranged in an array on the reflection plate 7. The spacing between adjacent radiation elements 8 on the reflecting plate 7 is 0.8 times the operating wavelength. The frequency range is 1427 MHz-2690 MHz, and the frequency ranges of TD-SCDMA and WCDM of the 3G network and the frequency ranges of TDD and FDD in the 4G network are covered. The edge of the reflecting plate 7 is provided with two layers of boundary strips 9, so that the front-back specific performance can be improved.
Claims (10)
1. The utility model provides a dual polarization broadband radiating element of communication antenna, includes support column and two symmetrical radiating element (1, 2) that set up on the support column that balanced-unbalanced converter (3) formed, every symmetrical radiating element comprises two symmetrical oscillator arms, and two symmetrical radiating element (1, 2) are orthogonal arrangement, and has coupling gap (6) between the adjacent oscillator arm in two symmetrical radiating element (1, 2), its characterized in that: the oscillator arms are of hollow frame-shaped structures, an open-circuit branch joint extending from the inner wall of the frame-shaped structures to the center is arranged in the hollow parts of the oscillator arms, one end of each open-circuit branch joint is connected with one side of each oscillator arm opposite to the corresponding oscillator arm into a whole, the other end of each open-circuit branch joint extends towards the direction opposite to the corresponding oscillator arm, the open-circuit branch joint in each oscillator arm forms small symmetrical oscillator radiation, and a resonance mode is added; two open-circuit branches in the same symmetrical radiating oscillator are in a group, and the two groups of open-circuit branches in the two symmetrical radiating oscillators are in orthogonal arrangement.
2. A dual polarized broadband radiating element for a communications antenna according to claim 1, wherein: the two symmetrical radiating oscillators are respectively fed by two orthogonal feed pieces (4) which are arranged up and down.
3. A dual polarized broadband radiating element for a communications antenna according to claim 1, wherein: adjacent dipole arms of the two symmetrical radiating elements are symmetrical relative to the central axis plane of the radiating element.
4. A dual polarized broadband radiating element for a communications antenna according to claim 1, wherein: the maximum distance between adjacent vibrator arms in the two symmetrical radiating vibrators is 2/5 working wavelengths.
5. A dual polarized broadband radiating element for a communications antenna according to claim 1, wherein: the height of the support column formed by the balun (3) is 1/4 of the working wavelength.
6. A dual polarized broadband radiating element for a communications antenna according to claim 1, wherein: the open branch joint is triangular, rectangular or trapezoidal.
7. The dual polarized broadband radiating element of a communications antenna of claim 6, wherein: the width of the open branch joint gradually decreases from the inner wall of the vibrator arm frame-type structure to the extending end of the vibrator arm frame-type structure.
8. A communication antenna having a radiating element according to any of claims 1 to 7, characterized in that: comprising a reflecting plate (7) and said radiation elements (8) arranged in an array on the reflecting plate (7).
9. The communications antenna of claim 8, wherein: the interval between the adjacent radiation units (8) on the reflecting plate (7) is 0.8 times of the working wavelength.
10. The communications antenna of claim 8, wherein: the edge of the reflecting plate (7) is provided with two layers of boundary strips (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910064141.2A CN109687114B (en) | 2019-01-23 | 2019-01-23 | Communication antenna and dual-polarized broadband radiating element thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910064141.2A CN109687114B (en) | 2019-01-23 | 2019-01-23 | Communication antenna and dual-polarized broadband radiating element thereof |
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| CN109687114A CN109687114A (en) | 2019-04-26 |
| CN109687114B true CN109687114B (en) | 2024-06-04 |
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| CN201910064141.2A Active CN109687114B (en) | 2019-01-23 | 2019-01-23 | Communication antenna and dual-polarized broadband radiating element thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021000180A1 (en) * | 2019-06-30 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Wifi antenna and wireless communication device |
| CN110380196A (en) * | 2019-07-30 | 2019-10-25 | 广东通宇通讯股份有限公司 | A kind of Wideband dual-polarization radiating unit and antenna |
| CN110661076B (en) * | 2019-08-22 | 2021-04-20 | 中国通信建设集团设计院有限公司 | Dual-polarized radiation unit and antenna for 5G communication |
| CN117317576B (en) * | 2023-11-29 | 2024-02-06 | 福建福大北斗通信科技有限公司 | Broadband four-arm helical antenna |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201946738U (en) * | 2010-12-03 | 2011-08-24 | 广东通宇通讯股份有限公司 | Broad band dual-polarization antenna unit |
| CN209448009U (en) * | 2019-01-23 | 2019-09-27 | 广东通宇通讯股份有限公司 | A kind of communication antenna and its dual polarization broadband radiating element |
-
2019
- 2019-01-23 CN CN201910064141.2A patent/CN109687114B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201946738U (en) * | 2010-12-03 | 2011-08-24 | 广东通宇通讯股份有限公司 | Broad band dual-polarization antenna unit |
| CN209448009U (en) * | 2019-01-23 | 2019-09-27 | 广东通宇通讯股份有限公司 | A kind of communication antenna and its dual polarization broadband radiating element |
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| CN109687114A (en) | 2019-04-26 |
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