CN110444867A - A kind of circularly-polarized patch antenna - Google Patents
A kind of circularly-polarized patch antenna Download PDFInfo
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- CN110444867A CN110444867A CN201910773237.6A CN201910773237A CN110444867A CN 110444867 A CN110444867 A CN 110444867A CN 201910773237 A CN201910773237 A CN 201910773237A CN 110444867 A CN110444867 A CN 110444867A
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- patch
- circularly
- fan beam
- short
- antenna
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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
-
- 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
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- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of circularly-polarized patch antennas, the Antenna Design is on the medium substrate of any dielectric constant, medium substrate side is for metal, the medium substrate other side is a fan beam patch, one radius side of radiation patch with metal is connected by short-circuit wall, chip surface with metal is connected by short circuit nail, meanwhile, rectangular channel is opened on radiation patch surface.The present invention is able to maintain the intrinsic low section attribute of antenna, has certain angle with good circular polarization characteristics and greatest irradiation direction and antennas orthogonal face, that is, shows inclination circular polarisation wave beam radiation characteristic；Antenna use coaxial feed, have structure it is simple, small in size, low section, with it is roomy the advantages that, it can be achieved that good oblique wave beam circular performance.
Description
Technical field
The invention belongs to Internet of Things and microwave technical field more particularly to a kind of circularly-polarized patch antennas.
Background technique
Circular polarized antenna can receive the incoming wave of any direction, and its radiated wave can also be received by any polarized antenna,
And it can reduce the influence of reflection signal using circularly polarised wave, therefore in communication, radar, electronic countermeasure and point in investigation and wide
Broadcasting TV etc. has important application.
The condition for realizing circular polarisation is therefore constant amplitude, orthogonal, 90 ° of phase phase difference of two line polarization waves realize circular polarisation
The mode of antenna can have two classes: (1) ring current；(2) two orthogonally located line currents, as long as two line current constant amplitudes,
90 ° of phase difference.
The circular polarized antenna of small size is four-arm spiral antenna and micro-strip circular polarized antenna.With conventional microwave antenna phase
Have size small than, microstrip antenna, it is at low cost, the advantages that circular polarisation and linear polarization easy to accomplish, therefore, about from 100MHz
It is widely applied on to the broadband of 50GHz.The circular polarisation technology of microstrip antenna is mainly realized by three kinds of methods: single to present
Method, more feedback methods and multivariate method.
Circular polarized antenna with slant beam is highly suitable for various wireless systems, such as mobile and satellite communication system
System.Under the premise of without using mechanical rotation, realize that intrinsic oblique circular polarisation wave beam is mainly the following method: the first is
Use combined helical antenna；Second of technology is using complementary oscillator structure；The third technology is micro- using the corner cut of traveling wave characteristic
Band line.These technologies are required by traveling-wave structure, and volume is larger.
Summary of the invention
Goal of the invention: in view of the above problems, the present invention proposes a kind of circularly-polarized patch antenna, antenna volume is small and exquisite and structure
Simply, there is good inclination circular polarisation wave beam radiation characteristic.
Technical solution: to realize above-mentioned purpose of design, the technical scheme adopted by the invention is that: a kind of circularly-polarized patch day
Line, including metal ground plate and fan beam patch, fan beam patch is parallel with metal ground plate, and fan beam patch passes through
The short-circuit wall of one and half path lengths is connect with metal ground plate, and short-circuit wall is vertical with metal ground plate；Metal ground plate and fan-shaped spoke
It penetrates patch to be connected by short circuit nail, fan beam patch appropriate location offers several rectangular channels；Coaxial feed unit be in
On the different radius side of short-circuit wall.
Further, the medium of any dielectric constant is filled between fan beam patch and metal ground plate.
Further, less than 0.1 times wavelength of the spacing between fan beam patch and metal ground plate.
Further, the short circuit nail and the angular range of short-circuit wall are 20 °~140 °, short-circuit nail center and fan beam
Distance is 0.2-0.6 times of radiation patch radius between patch center.
Further, fan beam patch circumference arc length is the odd-multiple of corresponding 1/4 wavelength of antenna resonant frequency, central angle
30 °~360 ° of range.
Further, coaxial feed unit includes coaxial inner conductor and coaxial outer conductor.
Further, the radiation that distance is 0.1-1 times between coaxial feed unit center and fan beam patch center is pasted
Piece radius.
Further, the number and location of rectangular channel depend on higher order resonances mode used by antenna.
The utility model has the advantages that inventive antenna has positive circular polarisation or inclination circular polarisation wave beam, i.e., minimum axis ratio in pitching face
Radiation direction appear within the scope of positive and negative 30 ° of pitch angle, have structure it is simple, low section, with the advantages that roomy, small in size.
Detailed description of the invention
Fig. 1 is the Facad structure and reference coordinate schematic diagram of antenna；
Fig. 2 is the 3 D stereo schematic diagram and reference coordinate schematic diagram of antenna；
Fig. 3 is antenna pattern of the antenna in the face XZ and YZ；
Fig. 4 is antenna reflection coefficient performance plot；
Fig. 5 is axis ratio figure of the antenna in ZX plane difference pitch angle.
Specific embodiment
Further description of the technical solution of the present invention with reference to the accompanying drawings and examples.
As depicted in figs. 1 and 2, the present invention provides a kind of small circularly-polarizedanti-metal paster antenna, including fan beam patch 2, square
Shape slot 4, coaxial feed unit, short circuit nail 3, metal ground plate 1, short-circuit wall 7；It is semiclosed for constituting the fan-shaped magnetic dipole of antenna
Structure is made of, metal ground plate and sector the short-circuit wall 7 of fan beam patch 2, metal ground plate 1 and one and half path lengths
Radiation patch is connected by short circuit nail 3, and the angle of short circuit nail and short-circuit wall is 20 ° -140 °.
Fan beam patch 2 is parallel with metal ground plate 1, and fan beam patch 2 passes through the short-circuit wall 7 of one and half path lengths
It is connect with metal ground plate 1, short-circuit wall 7 is vertical with metal ground plate 1；Fan beam patch appropriate location offers several rectangles
Slot 4；Coaxial feed unit is on the radius side different from short-circuit wall 7.
Coaxial feed unit includes coaxial inner conductor 5 and coaxial outer conductor 6, coaxial feed unit center and fan-shaped spoke
Penetrate the radiation patch radius that distance is 0.1-1 times between patch center.
Fan beam patch is located at the top of metal ground plate, and offers several squares in fan beam patch appropriate location
Shape slot.There is positive circular polarisation or inclination circular polarisation wave beam, i.e., the radiation direction of minimum axis ratio to appear in pitch angle in pitching face
Within the scope of positive and negative 30 °.The circumference arc length of fan beam patch is the odd-multiple of corresponding 1/4 wavelength of antenna resonant frequency, central angle
30 °~360 ° of range.The mode of resonance of antenna is controlled by the central angle and circumference arc length of fan beam patch, and each mode of resonance can
To be described with unified closure analytical expression.The number and location of rectangular channel depend on the used higher order resonances mode of antenna
Mathematic(al) representation.The phase difference between two orthogonal modes of resonance of adjusting, which is followed closely, by short circuit realizes circular polarisation.
The medium of any dielectric constant is filled between the upper and lower surface of the antenna.Short circuit nail and circle center distance, with patch half
The proportional region of diameter is 0.2-0.6.Less than 0.1 times wavelength of spacing between fan beam patch and metal ground plate.Its entelechy
Change rotation direction to be made Mirroring Mapping about fan-shaped angular bisector by short-circuit wall, feeding point, fluting and changed.
Compared with conventional patch, novel circular patch structure is used on the antenna structure, so as to reduce antenna
Size increases the usage range of antenna.Increase bandwidth by increasing rectangular channel adjusting higher mode frequency.The antenna structure is easy
In adjusting, the relative position by changing coaxial feeder and short circuit nail can reduce return loss to a certain extent and improve impedance
Matching properties meet specific requirement so that resonance frequency and bandwidth change.
Technical solution of the present invention is further elaborated below by specific embodiment.
Air dielectric, fan beam patch 2 are used in the present embodiment and be almost the spacing between earth plate 1 for 4 millimeters,
The radius of fan beam patch is 15mm, and the radius of earth plate is 60mm, and the degree of central angle 8 is 200 °, and the size of angle 9 is
133 °, angle 10 is 100 °.Short circuit 3 centers of nail and 2 center distance 6.6mm of radiation patch, rectangular channel and radiation patch center
Distance 8.8mm, coaxial feeder radius are 0.65mm.
Fig. 3 is antenna pattern of the antenna in the face XZ, and for the working frequency of antenna in 5.3GHz, dotted line indicates left-handed entelechy
Change, solid line indicates right-handed circular polarization.Fig. 4 is antenna reflection coefficient characteristic, which covers 4.73-6.08GHz
Frequency range, centre frequency is in 5.56GHz, it can be seen that the antenna has wider bandwidth.Fig. 5 is antenna different angle axis than scheming,
Solid line indicates the axis ratio figure that pitch angle is 5 °, and for the axis that dotted line expression pitch angle is 10 ° than scheming, dotted line indicates pitch angle for 15 °
Axis is than figure, and 5 result is as it can be seen that the oblique circular polarisation angle of the antenna has the axis ratio band less than 3dB in 0-15 ° with reference to the accompanying drawings
It is wide.
Claims (8)
1. a kind of circularly-polarized patch antenna, which is characterized in that including metal ground plate (1) and fan beam patch (2), fan-shaped spoke
Penetrate that patch (2) is parallel with metal ground plate (1), fan beam patch (2) is connect by the short-circuit wall (7) of one and half path lengths with metal
Floor (1) connection, short-circuit wall (7) are vertical with metal ground plate (1)；Metal ground plate and fan beam patch pass through short circuit nail
(3) it is connected, fan beam patch appropriate location offers several rectangular channels (4)；Coaxial feed unit is in short-circuit wall (7) no
On same radius side.
2. circularly-polarized patch antenna according to claim 1, which is characterized in that fan beam patch and metal ground plate it
Between fill the medium of any dielectric constant.
3. circularly-polarized patch antenna according to claim 1, which is characterized in that fan beam patch and metal ground plate it
Between less than 0.1 times wavelength of spacing.
4. circularly-polarized patch antenna according to claim 1, which is characterized in that the angle model of the short circuit nail and short-circuit wall
Enclosing is 20 °~140 °, and distance is 0.2-0.6 times of radiation patch radius between short-circuit nail center and fan beam patch center.
5. circularly-polarized patch antenna according to claim 1, which is characterized in that fan beam patch circumference arc length is antenna
The odd-multiple of corresponding 1/4 wavelength of resonance frequency, 30 °~360 ° of center of circle angular region.
6. circularly-polarized patch antenna according to claim 1, which is characterized in that coaxial feed unit includes leading in coaxial line
Body (5) and coaxial outer conductor (6).
7. circularly-polarized patch antenna according to claim 1, which is characterized in that coaxial feed unit center and fan beam
The radiation patch radius that distance is 0.1-1 times between patch center.
8. circularly-polarized patch antenna according to claim 1, which is characterized in that the number and location of rectangular channel depend on day
Higher order resonances mode used by line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910773237.6A CN110444867B (en) | 2019-08-21 | 2019-08-21 | Circularly polarized patch antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910773237.6A CN110444867B (en) | 2019-08-21 | 2019-08-21 | Circularly polarized patch antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110444867A true CN110444867A (en) | 2019-11-12 |
| CN110444867B CN110444867B (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910773237.6A Active CN110444867B (en) | 2019-08-21 | 2019-08-21 | Circularly polarized patch antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114976653A (en) * | 2022-06-13 | 2022-08-30 | 南京邮电大学 | Design method of high-gain plane end-fire antenna |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993238A (en) * | 2015-05-25 | 2015-10-21 | 深圳市华颖泰科电子技术有限公司 | Circular polarization microstrip antenna and method for increasing bandwidth thereof |
| US20160043479A1 (en) * | 2012-08-09 | 2016-02-11 | Topcon Positioning Systems, Inc. | Compact circular polarization antenna system with reduced cross-polarization component |
| CN107331949A (en) * | 2017-06-14 | 2017-11-07 | 南京邮电大学 | A kind of design method of car antenna |
-
2019
- 2019-08-21 CN CN201910773237.6A patent/CN110444867B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160043479A1 (en) * | 2012-08-09 | 2016-02-11 | Topcon Positioning Systems, Inc. | Compact circular polarization antenna system with reduced cross-polarization component |
| CN104993238A (en) * | 2015-05-25 | 2015-10-21 | 深圳市华颖泰科电子技术有限公司 | Circular polarization microstrip antenna and method for increasing bandwidth thereof |
| CN107331949A (en) * | 2017-06-14 | 2017-11-07 | 南京邮电大学 | A kind of design method of car antenna |
Non-Patent Citations (2)
| Title |
|---|
| AMIT A. DESHMUKH ET AL: ""Sectoral Patch Antenna Embedded with Arc Shape Slots and Slits For Circular Polarized Response"", 《2018 INTERNATIONAL CONFERENCE ON COMMUNICATION, INFORMATION & COMPUTING TECHNOLOGY (ICCICT)》 * |
| 张文海等: ""基于互补源的紧凑型圆极化倾斜波束天线"", 《南京信息工程大学学报（自然科学版）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114976653A (en) * | 2022-06-13 | 2022-08-30 | 南京邮电大学 | Design method of high-gain plane end-fire antenna |
| CN114976653B (en) * | 2022-06-13 | 2023-10-13 | 南京邮电大学 | Design method of high-gain planar end-fire antenna |
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| CN110444867B (en) | 2020-12-08 |
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