CN114188706A - Double-frequency double-port double-antenna common-caliber integrated microstrip antenna - Google Patents
Double-frequency double-port double-antenna common-caliber integrated microstrip antenna Download PDFInfo
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- CN114188706A CN114188706A CN202111505968.6A CN202111505968A CN114188706A CN 114188706 A CN114188706 A CN 114188706A CN 202111505968 A CN202111505968 A CN 202111505968A CN 114188706 A CN114188706 A CN 114188706A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
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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
- 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
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- 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
Abstract
A dual-frequency dual-port dual-antenna common-caliber integrated microstrip antenna relates to the technical field of antenna integration and solves the problem that dual antennas occupy large installation space and size due to the fact that dual antennas are needed by satellite-borne terminal equipment. The microstrip antenna includes: the device comprises a base, a dielectric plate and a radiation patch; the base, the dielectric plate and the radiation patch are sequentially attached from bottom to top; the radiation patch is divided into an external radiation patch and an internal radiation patch; the inner radiation patch is arranged in the outer radiation patch, and the bottoms of the outer radiation patch and the inner radiation patch are both attached to the dielectric plate; short circuit through holes are uniformly distributed on the periphery of the external radiation patch and are connected with the external radiation patch and the base. The dual-port antenna is used as a dual-band dual-port antenna, the antenna radiator and the feed structure are simple, no complex feed network is provided, the processing is convenient, the dual-port isolation degree is high, and the dual-port antenna is easy to debug; the scheme is reasonable and easy to realize, and can meet the application requirements of the low-orbit satellite on the satellite-borne terminal receiving and transmitting antenna.
Description
Technical Field
The invention relates to the technical field of antenna integration design, in particular to a dual-frequency dual-port dual-antenna common-caliber integrated microstrip antenna.
Background
The receiving and transmitting of the multi-channel satellite-borne terminal work in an S frequency band and an L frequency band respectively, the output power of a transmitter is about 10W, the receiving and transmitting frequency band distance is long, the receiving and transmitting of an antenna are required to work in right-hand circular polarization and left-hand circular polarization respectively in engineering, the half-power wave beam width is larger than 90 degrees, and therefore the scheme of a common broadband receiving and transmitting antenna is not feasible.
Firstly, a single-frequency-band antenna is adopted in the existing antenna scheme of the satellite-borne terminal, when the single-frequency-band antenna is adopted, the satellite-borne terminal needs to be provided with two antennas with different working frequency bands to meet the use requirement, the antennas in the four-arm spiral and microstrip modes can be selected, but the two antennas for receiving and transmitting need to be respectively installed, and the occupied installation space is larger; secondly, the inner dimension (R in fig. 1) of the square annular radiation patch which is normally operated under the main mode to the external patch1) And peripheral dimension (D in FIG. 1)1) The ratio needs to be less than 1:3 to ensure impedance matching of the external radiating patches, and the size ratio limits the frequency ratio of the external radiating patches and the internal radiating patches of the common-aperture microstrip antenna.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a dual-frequency dual-port dual-antenna common-caliber integrated microstrip antenna, which solves the problem that the dual-antenna occupies a large installation space due to the fact that dual-antenna is needed by satellite-borne terminal equipment.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a dual-frequency dual-port dual-antenna common-caliber integrated microstrip antenna comprises: the device comprises a base, a dielectric plate and a radiation patch; the base, the dielectric plate and the radiation patch are sequentially attached from bottom to top; the radiation patch is divided into an external radiation patch and an internal radiation patch; the internal radiation patch is arranged in the external radiation patch, and the bottoms of the external radiation patch and the internal radiation patch are both attached to the dielectric plate; short circuit via holes are uniformly distributed on the periphery of the external radiation patch and are connected with the external radiation patch and the base.
Preferably, the external radiation patch is a square patch plus a chamfer, the center of the square patch plus the chamfer is taken as a circle center, and through holes are uniformly distributed on the circumference of the square patch plus the chamfer; taking the center of the square patch plus the tangent angle as the center of a circle, and arranging an internal radiation patch in the circular inner part formed by the via hole; the internal radiation patch is a circular patch and a groove.
Preferably, a connecting line of the centers of the via holes is arranged on the external radiation patch.
Preferably, the connecting line is distributed with screws for fixing the medium plate and the base.
Preferably, the external radiation patch and the central radiation patch respectively work in different frequency bands and work through dual-port feed.
Preferably, the base is made of a metal material.
Preferably, the external radiation patch is a square patch plus a chamfer plus a groove.
The invention has the beneficial effects that:
1. the antenna simultaneously meets the performance index requirements of a dual-port dual-antenna corresponding to the dual frequency bands, and the dual-antenna common-caliber is integrated into one antenna on the basis of the original microstrip circular polarized antenna technology, so that the problem that the satellite-borne terminal antenna has large requirements on the space size of a satellite is solved, the complexity of the satellite-borne multi-channel terminal antenna is simplified, and the flexibility of the space layout of the satellite antenna is increased;
2. as a dual-band dual-port antenna, the antenna radiator and the feed structure are simple, no complex feed network exists, the processing is convenient, the dual-port isolation is high, and the dual-port antenna is easy to debug.
3. The scheme is reasonable and easy to realize, and can meet the application requirements of the low-orbit satellite on the satellite-borne terminal receiving and transmitting antenna.
Drawings
FIG. 1 is a top view of a dual-band dual-port dual-antenna common-aperture integrated microstrip antenna according to the present invention.
FIG. 2 is a front view of a dual-band dual-port dual-antenna common-aperture integrated microstrip antenna according to the present invention.
Fig. 3 shows the simulation results of return loss and port isolation in the embodiment of the present invention.
Fig. 4 shows an axial ratio simulation result of the external L-band antenna according to the embodiment of the present invention.
Fig. 5 shows an axial ratio simulation result of the internal S-band antenna according to the embodiment of the present invention.
Fig. 6 shows simulation results of external patch radiation gain according to an embodiment of the present invention.
Fig. 7 shows simulation results of radiation gain of the internal patch according to the embodiment of the present invention.
In the figure: 1. the antenna comprises a base, 1-1 parts of antenna mounting holes, 2 parts of a dielectric plate, 2-1 parts of dielectric plate cut angles, 3 parts of square patches and cut angles, 3-1 parts of central symmetry cut angles, 4 parts of circular patches and grooves, 4-1 parts of central symmetry grooves, 5 parts of via holes, 6 parts of screws, 7 parts of SMA ports
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, a dual-band dual-port dual-antenna common-aperture integrated microstrip antenna includes: the device comprises a base 1, a dielectric plate 2 and a radiation patch; the base 1, the dielectric plate 2 and the radiation patch are sequentially attached from bottom to top; the radiation patch is divided into an external radiation patch and an internal radiation patch; the internal radiation patch is arranged in the external radiation patch, and the bottoms of the external radiation patch and the internal radiation patch are both attached to the dielectric plate; the external radiation patch is a square patch plus a cut angle 3, the center of the square patch plus the cut angle 3 is taken as a circle center, and through holes 5 are uniformly distributed on the circumference of the square patch plus the cut angle 3; the via hole 5 is connected with the square patch cut corner 3 and the base 1; an internal radiation patch is arranged in a circle formed by the via hole 5 by taking the center of the square patch plus the tangent angle 3 as the center of the circle; the internal radiation patch is a circular patch plus a groove 4. As shown in fig. 2, SMA ports 7 for feeding the external radiation patch and the internal radiation patch are respectively arranged below the base 1. As shown in fig. 1, the dielectric plate 2 is a corner-cut structure, four antenna mounting holes 1-1 are formed at four corners of the upper surface of the base 1, that is, at the positions of the corner-cut 2-1 of the dielectric plate, and a receiving antenna and a transmitting antenna can be selectively mounted in the antenna mounting holes 1-1. The circular ring formed by the through holes 5 is distributed with screws 6 for fixing the medium plate 2 and the base 1; in this embodiment, the number of the screws 6 is 4, and the circumferences are uniformly distributed on the circular ring. In this embodiment, the circle surrounded by the via hole 5 is a hollow structure, that is, the square patch plus chamfer 3 is a square structure, the circular structure arranged at the center is a hollow, and the square ring shape, and the line connecting the center of the via hole 5 is arranged on the square patch plus chamfer 3. As shown in fig. 1, the chamfer on the square patch plus chamfer 3 is two centrosymmetric chamfers 3-1, and the two grooves of the circular patch plus groove 4 are centrosymmetric grooves 4-1.
In order to verify the rationality and the engineering feasibility of the simulation design, the antenna is subjected to electromagnetic simulation, and the simulation result is as follows.
The antenna model is shown in FIG. 1 and FIG. 2, and the dielectric constant of the antenna dielectric plate 2 is εr6.15, height H13.18 mm; the thickness of the aluminum plate of the antenna base 1 is H23mm, length and width are D272 mm; the diameter of the short circuit via hole 5 distributed annularly at the center of the antenna is R2＝2mm。
The simulation results of medium return loss and port isolation are shown in fig. 3, and the return loss of the L port at the L frequency band 1615 ± 5MHz of the antenna is less than 13 dB; the return loss of an S port at the S frequency band 2491 +/-5 MHz of the antenna is less than 18 dB. The isolation between the L port and the S port is greater than 30dB in both working frequency bands.
The axial ratio simulation result of the external L-band antenna is shown in fig. 4, the square patch plus the cut angle 3 of the external radiation patch of the antenna works in the L-band, and the 3dB axial ratio beam width is better than +/-60 degrees.
The axial ratio simulation result of the internal S-band antenna is shown in fig. 5, the circular patch and the groove 4 of the internal radiation patch of the antenna work in the S-band, and the 3dB axial ratio beam width is better than +/-60 degrees.
The simulation result of the radiation gain of the external patch is shown in fig. 6, the half-power beam width of the antenna in the L frequency band is larger than 45 degrees, the normal phase gain is larger than 6dB, and the plus or minus 70 degree gain is larger than-1 dB.
The simulation result of the radiation gain of the internal patch is shown in fig. 7, the half-power beam width of the antenna in the S frequency band is larger than 45 degrees, the normal phase gain is larger than 6.2dB, and the plus or minus 70 degree gain is larger than-1 dB.
Simulation results show that: s11 of the external antenna is smaller than-13 dB in a working frequency band 1615 +/-5 MHz, the axial ratio in a beam angle +/-60 degrees is smaller than 3dB, the maximum gain is 6dB, and the gain in the beam angle +/-70 degrees is larger than-1 dB; the S11 of the central antenna is less than-18 dB in the working frequency band of 2492 +/-5 MHz, the axial ratio is less than 3dB in the beam angle +/-60 degrees, the maximum gain is 6.2dB, and the gain in the beam angle +/-70 degrees is greater than-1 dB.
Claims (7)
1. A dual-frequency dual-port dual-antenna common-caliber integrated microstrip antenna comprises: the device comprises a base, a dielectric plate and a radiation patch; the base, the dielectric plate and the radiation patch are sequentially attached from bottom to top; the radiating patch is characterized in that the radiating patch is divided into an external radiating patch and an internal radiating patch; the internal radiation patch is arranged in the external radiation patch, and the bottoms of the external radiation patch and the internal radiation patch are both attached to the dielectric plate; short circuit via holes are uniformly distributed on the periphery of the external radiation patch and are connected with the external radiation patch and the base.
2. The dual-frequency dual-port dual-antenna common-caliber integrated microstrip antenna as claimed in claim 1, wherein the external radiation patch is a square patch plus a chamfer, and through holes are uniformly distributed on the circumference of the square patch plus the chamfer by taking the center of the square patch plus the chamfer as a circle center; taking the center of the square patch plus the tangent angle as the center of a circle, and arranging an internal radiation patch in the circular inner part formed by the via hole; the internal radiation patch is a circular patch and a groove.
3. The dual-frequency dual-port dual-antenna common-caliber integrated microstrip antenna as claimed in claim 2, wherein a connection line of the centers of the via holes is disposed on the external radiating patch.
4. The dual-band dual-port dual-antenna common-aperture integrated microstrip antenna according to claim 3, wherein screws for fixing the dielectric plate and the base are distributed on the connecting line.
5. The dual-band dual-port dual-antenna common-aperture integrated microstrip antenna according to claim 1 wherein the outer radiating patch and the central radiating patch operate in different frequency bands respectively and operate through dual-port feed.
6. The dual-band dual-port dual-antenna common-aperture integrated microstrip antenna according to claim 1 wherein the base is made of a metal material.
7. The dual-frequency dual-port dual-antenna common-aperture integrated microstrip antenna according to claim 1 wherein the external radiating patch is a square patch plus a chamfer plus a groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111505968.6A CN114188706A (en) | 2021-12-10 | 2021-12-10 | Double-frequency double-port double-antenna common-caliber integrated microstrip antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111505968.6A CN114188706A (en) | 2021-12-10 | 2021-12-10 | Double-frequency double-port double-antenna common-caliber integrated microstrip antenna |
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| CN114188706A true CN114188706A (en) | 2022-03-15 |
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| CN202111505968.6A Pending CN114188706A (en) | 2021-12-10 | 2021-12-10 | Double-frequency double-port double-antenna common-caliber integrated microstrip antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115799827A (en) * | 2023-02-07 | 2023-03-14 | 广东工业大学 | Circularly polarized compact full-duplex antenna and wireless communication device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102468534A (en) * | 2010-11-04 | 2012-05-23 | 北京和协航电科技有限公司 | Single-layer double-frequency microstrip antenna |
| CN105305046A (en) * | 2015-10-23 | 2016-02-03 | 福州大学 | Electromagnetic coupling feed navigation transmitting-receiving antenna of 1st generation of Beidou satellite |
| CN205081242U (en) * | 2015-06-09 | 2016-03-09 | 广东盛路通信科技股份有限公司 | Combined anti -interference antenna |
| CN210074153U (en) * | 2019-07-09 | 2020-02-14 | 成都北斗天线工程技术有限公司 | Low-profile double-frequency double-circular-polarization microstrip antenna |
| CN111987465A (en) * | 2020-07-16 | 2020-11-24 | 北京自动化控制设备研究所 | Laminated satellite navigation microstrip antenna convenient to debug |
| CN212062683U (en) * | 2020-06-12 | 2020-12-01 | 嘉兴金领电子有限公司 | Slot coupling single-feed single-layer double-frequency circularly polarized microstrip antenna |
-
2021
- 2021-12-10 CN CN202111505968.6A patent/CN114188706A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102468534A (en) * | 2010-11-04 | 2012-05-23 | 北京和协航电科技有限公司 | Single-layer double-frequency microstrip antenna |
| CN205081242U (en) * | 2015-06-09 | 2016-03-09 | 广东盛路通信科技股份有限公司 | Combined anti -interference antenna |
| CN105305046A (en) * | 2015-10-23 | 2016-02-03 | 福州大学 | Electromagnetic coupling feed navigation transmitting-receiving antenna of 1st generation of Beidou satellite |
| CN210074153U (en) * | 2019-07-09 | 2020-02-14 | 成都北斗天线工程技术有限公司 | Low-profile double-frequency double-circular-polarization microstrip antenna |
| CN212062683U (en) * | 2020-06-12 | 2020-12-01 | 嘉兴金领电子有限公司 | Slot coupling single-feed single-layer double-frequency circularly polarized microstrip antenna |
| CN111987465A (en) * | 2020-07-16 | 2020-11-24 | 北京自动化控制设备研究所 | Laminated satellite navigation microstrip antenna convenient to debug |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115799827A (en) * | 2023-02-07 | 2023-03-14 | 广东工业大学 | Circularly polarized compact full-duplex antenna and wireless communication device |
| CN115799827B (en) * | 2023-02-07 | 2023-05-05 | 广东工业大学 | Circularly polarized compact full duplex antenna and wireless communication device |
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