CN110797647A - Single-feed three-frequency circularly polarized patch antenna - Google Patents
Single-feed three-frequency circularly polarized patch antenna Download PDFInfo
- Publication number
- CN110797647A CN110797647A CN201911079597.2A CN201911079597A CN110797647A CN 110797647 A CN110797647 A CN 110797647A CN 201911079597 A CN201911079597 A CN 201911079597A CN 110797647 A CN110797647 A CN 110797647A
- Authority
- CN
- China
- Prior art keywords
- dielectric substrate
- circularly polarized
- input port
- feed
- patch
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- 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
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot 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
- 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
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0428—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave
Landscapes
- Waveguide Aerials (AREA)
Abstract
The invention discloses a single-feed three-frequency circularly polarized patch antenna, which comprises a first dielectric substrate, a second dielectric substrate and an input port, wherein the first dielectric substrate is provided with a first end and a second end; the first dielectric substrate is positioned above the second dielectric substrate, and an air layer is arranged between the first dielectric substrate and the second dielectric substrate; the top surface of the first dielectric substrate is provided with a rectangular radiation patch, wherein two adjacent sides of the rectangular radiation patch are loaded with open circuit stubs with different sizes, and the other two sides are provided with gaps which are parallel to each other and have different sizes; the top surface of the second dielectric substrate is provided with a floor with a gap, the bottom surface of the second dielectric substrate is provided with a micro-strip feeder line of an input port, and the micro-strip feeder line of the input port excites the rectangular radiation patch through the gap on the floor. The invention can respectively realize different and good circular polarization characteristics in three frequency bands and has the advantages of flexible design, low profile, low axial ratio, low cost and the like.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a single-feed three-frequency circularly polarized patch antenna.
Background
The rapid development of satellite wireless systems greatly improves the quality of wireless communication, and multi-frequency multi-polarization antennas applied to wireless communication terminals are more and more concerned. In a dense building place, a large number of multipath reflections can occur, and the circularly polarized antenna can effectively resist the Faraday rotation effect and multipath fading and improve the signal quality. The role of a multi-frequency antenna with similar radiation characteristics for each passband is particularly important in order for the same system to simultaneously meet multiple communication standards. The microstrip planar antenna has the advantages of light weight, easy processing, low profile, low cost and the like, and plays an important role in modern communication terminals. International researchers have proposed multiple patch antenna multi-band and circular polarization implementations.
The prior art is investigated and known, and the details are as follows:
in 2018, Jianfeng Qian et al published ON "IEEE TREASYTION ON ANTENNAS ANDPROPAGATION" an article entitled "A Novel Tri-Band Patch Antenna With broadcasting and Its Application to Filtering Antenna" by loading open branches ON two opposite sides of a rectangular Patch so that TM is a TM With open branches10Mode, TM20Mode and TM30The field distribution of the modes has similar characteristics, and the triple-band antenna with the edge-emitting characteristic is realized.
In 2017, Jin-Dong Zhang et al published an article entitled "Dual-Band and Dual-circular Polarized Single-layer microsystem Array Based ON multiresotant models" ON "IEEE TREASYTION ON ANTENNAS ANDPROPAGATION" by loading open branches ON the four sides of a rectangular patch so that the TM pattern is formed30Field distribution of modes and TM10The field distribution of the modes is similar and the TM is maintained10The field distribution of the mode is substantially constant while making the TM substantially constant10Mode and TM30The mold has similar edge radiation characteristics, and the working characteristics of double-frequency double-circular polarization are obtained by utilizing the diagonal feed structure.
In general, in the prior work, the research on circular polarization and multi-frequency antenna is in a considerable proportion, but most of the multi-frequency antennas are focused on dual-frequency linear polarization or dual-frequency circular polarization, and the feeding structure of circular polarization is mostly double-fed or diagonal single-fed. Therefore, the patch antenna which has the advantages of slot coupling feed, simple structure and three-frequency circular polarization characteristics is designed to have important significance.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a single-feed triple-frequency circularly polarized patch antenna with a simple and reliable structure, can respectively realize different and good circularly polarized characteristics in three frequency bands, and has the advantages of flexible design, low profile, low axial ratio, low cost and the like.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: a single-feed three-frequency circularly polarized patch antenna comprises a first dielectric substrate, a second dielectric substrate and an input port; the first dielectric substrate is positioned above the second dielectric substrate, and an air layer is arranged between the first dielectric substrate and the second dielectric substrate; the top surface of the first dielectric substrate is provided with a rectangular radiation patch, wherein two adjacent sides of the rectangular radiation patch are loaded with open circuit stubs with different sizes, and the other two sides are provided with gaps which are parallel to each other and have different sizes; the top surface of the second dielectric substrate is provided with a floor with a gap, the bottom surface of the second dielectric substrate is provided with a micro-strip feeder line of an input port, and the micro-strip feeder line of the input port excites the rectangular radiation patch through the gap on the floor.
Further, the pattern used by the rectangular radiating patch is the first three pairs of orthogonal patterns of the patch: TM10Mode and TM01Mode, TM20Mode and TM02Mode, TM30Mode and TM03And the module sequentially and respectively realizes left-hand circular polarization, left-hand circular polarization and right-hand circular polarization.
Further, the input port is impedance matched for 50 ohms.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the field distribution of the higher-order mode is disturbed by loading the open stub and the grooving technology, and the working characteristics of multi-frequency circular polarization are realized by utilizing the mutual orthogonal characteristics of the open stub and the grooving technology without adding an additional radiator, so that the processing complexity and the volume of the antenna are reduced.
2. By adjusting the phase difference of the orthogonal modes, the first three modes of the rectangular radiation patch have the edge radiation characteristic under the condition of single feed through the gap, and the feed structure of the multi-frequency circularly polarized antenna is effectively simplified.
3. The antenna has the advantages of light weight and low cost due to the microstrip structure, and can realize industrial mass production.
Drawings
Fig. 1 is a bottom view of a single-feed triple-band circularly polarized patch antenna according to the present invention.
Fig. 2 is a top view of the single-feed triple-band circularly polarized patch antenna of the present invention.
Fig. 3 is a side view of a single-feed triple-band circularly polarized patch antenna of the present invention.
Fig. 4 is a simulation result of the reflection coefficient of the single-feed triple-band circularly polarized patch antenna of the present invention.
Fig. 5 is a simulation result of the gain and axial ratio of the single-feed triple-band circularly polarized patch antenna in the normal direction.
Fig. 6a shows simulation results of radiation patterns (xoz plane and yoz plane) of the single-feed triple-band circularly polarized patch antenna of the present invention at a frequency of 2.5 GHz.
Fig. 6b shows simulation results of radiation patterns (xoz plane and yoz plane) of the single-feed triple-band circularly polarized patch antenna of the present invention at a frequency of 3.5 GHz.
Fig. 6c shows simulation results of radiation patterns (xoz plane and yoz plane) of the single-feed triple-band circularly polarized patch antenna of the present invention at a frequency of 4.4 GHz.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Referring to fig. 1 to 3, the single-feed triple-band circularly polarized patch antenna provided in this embodiment includes a first dielectric substrate 1, a second dielectric substrate 2, and an input port (not shown in the drawings); the first dielectric substrate 1 is positioned above the second dielectric substrate 2, and an air layer 3 exists between the first dielectric substrate 1 and the second dielectric substrate 2; a rectangular radiation patch 7 is arranged on the top surface of the first dielectric substrate 1, open- circuit stubs 8 and 9 with different sizes are loaded on two adjacent sides of the rectangular radiation patch 7, and gaps 10 and 11 with different sizes parallel to the two sides of the rectangular radiation patch 7 are formed on the other two sides of the rectangular radiation patch 7; the top surface of the second dielectric substrate 2 is provided with a floor 5 with a gap 6, the bottom surface of the second dielectric substrate is provided with a microstrip feeder 4 of an input port, and the microstrip feeder 4 of the input port excites a rectangular radiation patch 7 through the gap 6 on the floor 5; the input port is impedance matched for 50 ohms.
The pattern used by the rectangular radiating patch 7 is the first three pairs of orthogonal patterns of the patch: TM10Mode and TM01Mode, TM20Mode and TM02Mode, TM30Mode and TM03And (5) molding.
Referring to fig. 4, a simulation result of the reflection coefficient of the single-feed triple-band circularly polarized patch antenna of the present embodiment is shown. As can be seen from the figure, the impedance bandwidths of the antennas are 2.45-2.62GHz, 3.40-3.57GHz and 4.28-4.60 GHz. The antenna achieves good impedance matching within the pass band.
Referring to fig. 5, a simulation result of the gains and axial ratios of the single-feed three-frequency circularly polarized patch antenna in the normal directions of the three frequency bands is shown. As can be seen from the figure, the 3-dB axial ratio bandwidths of the three frequency bands of the antenna in the normal direction are 2.48-2.51GHz, 3.50-3.53GHz and 4.41-4.43GHz in sequence, the circular polarization characteristics are left-hand circular polarization, left-hand circular polarization and right-hand circular polarization in sequence, and the gains in the normal direction are 7.44dBi, 8.09dBi and 9.04dBi in sequence. The antenna can realize low axial ratio in a pass band and has good circular polarization characteristic.
Referring to fig. 6a, 6b and 6c, simulation results of radiation patterns of the single-feed triple-band circularly polarized patch antenna at the central frequencies of three pass bands are shown. It can be seen that the antenna achieves good directional radiation characteristics at both the xoz plane and the yoz plane, and the cross polarization is lower than the main polarization. Therefore, the single-feed three-frequency circularly polarized patch antenna has a good application prospect.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that the changes in the shape and principle of the present invention should be covered within the protection scope of the present invention.
Claims (3)
1. A single-feed three-frequency circularly polarized patch antenna is characterized in that: the device comprises a first dielectric substrate, a second dielectric substrate and an input port; the first dielectric substrate is positioned above the second dielectric substrate, and an air layer is arranged between the first dielectric substrate and the second dielectric substrate; the top surface of the first dielectric substrate is provided with a rectangular radiation patch, wherein two adjacent sides of the rectangular radiation patch are loaded with open circuit stubs with different sizes, and the other two sides are provided with gaps which are parallel to each other and have different sizes; the top surface of the second dielectric substrate is provided with a floor with a gap, the bottom surface of the second dielectric substrate is provided with a micro-strip feeder line of an input port, and the micro-strip feeder line of the input port excites the rectangular radiation patch through the gap on the floor.
2. The single-feed triple-band circularly polarized patch antenna of claim 1, wherein: the pattern used by the rectangular radiating patch is the first three pairs of orthogonal patterns of the patch: TM10Mode and TM01Mode, TM20Mode and TM02Mode, TM30Mode and TM03And the module sequentially and respectively realizes left-hand circular polarization, left-hand circular polarization and right-hand circular polarization.
3. The single-feed triple-band circularly polarized patch antenna of claim 1, wherein: the input port is impedance matched for 50 ohms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911079597.2A CN110797647A (en) | 2019-11-07 | 2019-11-07 | Single-feed three-frequency circularly polarized patch antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911079597.2A CN110797647A (en) | 2019-11-07 | 2019-11-07 | Single-feed three-frequency circularly polarized patch antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110797647A true CN110797647A (en) | 2020-02-14 |
Family
ID=69443111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911079597.2A Pending CN110797647A (en) | 2019-11-07 | 2019-11-07 | Single-feed three-frequency circularly polarized patch antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110797647A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113555682A (en) * | 2021-07-01 | 2021-10-26 | 北京航空航天大学 | Miniaturized three-frequency-band microstrip antenna |
| CN115603042A (en) * | 2022-09-28 | 2023-01-13 | 东莞理工学院（Cn） | Three frequency point circular polarization patch antenna |
-
2019
- 2019-11-07 CN CN201911079597.2A patent/CN110797647A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113555682A (en) * | 2021-07-01 | 2021-10-26 | 北京航空航天大学 | Miniaturized three-frequency-band microstrip antenna |
| CN115603042A (en) * | 2022-09-28 | 2023-01-13 | 东莞理工学院（Cn） | Three frequency point circular polarization patch antenna |
| CN115603042B (en) * | 2022-09-28 | 2023-11-21 | 东莞理工学院 | Three-frequency point circularly polarized patch antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Li et al. | Differentially fed, dual-band dual-polarized filtering antenna with high selectivity for 5G sub-6 GHz base station applications | |
| Alieldin et al. | A triple-band dual-polarized indoor base station antenna for 2G, 3G, 4G and sub-6 GHz 5G applications | |
| US8350771B1 (en) | Dual-band dual-orthogonal-polarization antenna element | |
| Serra et al. | A wide-band dual-polarized stacked patch antenna | |
| Moradi et al. | A dual-band dual-polarized microstrip array antenna for base stations | |
| Li et al. | Dual-mode loop antenna with compact feed for polarization diversity | |
| CN110797648A (en) | Three-frequency polarization reconfigurable single-feed patch antenna | |
| Ghouz | Novel compact and dual-broadband microstrip MIMO antennas for wireless applications | |
| Ahmed et al. | Dual wide-band four-unit MIMO antenna system for 4G/LTE and WLAN mobile phone applications | |
| Manteghi et al. | A novel miniaturized triband PIFA for MIMO applications | |
| Xie et al. | A wideband dual-polarized aperture-coupled antenna embedded in a small metal cavity | |
| CN110838615B (en) | Double-frequency line-circular polarization directional antenna | |
| CN114336065A (en) | Filtering hybrid antenna with circularly polarized broadband | |
| US11942698B2 (en) | Electrically small, planar, horizontally polarized dual-band omnidirectional antenna | |
| CN110797647A (en) | Single-feed three-frequency circularly polarized patch antenna | |
| CN210806000U (en) | Single-feed three-frequency circularly polarized patch antenna | |
| Nikmehr et al. | Design and simulation of triple band GSM900/DCS1800/UMTS2100 MHz microstrip antenna for base station | |
| Rao et al. | Dual band slot antenna for MIMO applications | |
| US11837793B2 (en) | Wideband wide-beamwidth polarization diverse antenna | |
| CN108321517B (en) | Orthogonal dual-polarization wide-band MIMO patch antenna and manufacturing method thereof | |
| CN210806001U (en) | Three-frequency polarization reconfigurable single-feed patch antenna | |
| CN110729559B (en) | Multi-frequency differential directional hybrid antenna | |
| CN108321544B (en) | Three-frequency patch antenna with side-emitting characteristic | |
| Miran et al. | Dual-polarized elliptic-H slot-coupled patch antenna for 5G applications | |
| Xie et al. | A compact dual-polarized dual-band stacked patch antenna for WLAN applications |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |