CN213460098U - Circularly polarized antenna and communication equipment - Google Patents
Circularly polarized antenna and communication equipment Download PDFInfo
- Publication number
- CN213460098U CN213460098U CN202023147739.5U CN202023147739U CN213460098U CN 213460098 U CN213460098 U CN 213460098U CN 202023147739 U CN202023147739 U CN 202023147739U CN 213460098 U CN213460098 U CN 213460098U
- Authority
- CN
- China
- Prior art keywords
- metal
- polarized antenna
- circularly polarized
- antenna
- dielectric layer
- 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.)
- Active
Links
Images
Landscapes
- Waveguide Aerials (AREA)
Abstract
The utility model provides a pair of circular polarized antenna and communication equipment belongs to antenna technical field, and a circular polarized antenna has at least N X N (N is greater than or equal to 1) antenna element, antenna element from top to bottom includes in proper order: the top metal layer consists of a metal radiation patch and a parasitic coupling unit arranged on the outer ring of the metal radiation patch; the first dielectric layer is provided with a metal blind hole; the height of the metal blind hole is the same as the thickness of the first dielectric layer; the metal blind hole is arranged corresponding to the metal radiation patch; the middle metal layer is etched with a coupling groove; the second dielectric layer is internally provided with a second microstrip line; the bottom metal layer is provided with a metal coaxial line; the metal coaxial line is connected with the second microstrip line; the utility model discloses a circular polarized antenna has parasitic coupling unit at the outer lane equipment of metal radiation paster, and the antenna gain has been improved to the axial ratio bandwidth of effectual improvement antenna.
Description
Technical Field
The utility model relates to an antenna technology field, concretely relates to circular polarized antenna and communication equipment.
Background
The circularly polarized antenna can receive electromagnetic waves with other polarization characteristics, so that the energy loss can be reduced when the circularly polarized antenna is used for receiving and transmitting electromagnetic energy; the handedness of the circularly polarized wave has an inverse characteristic, that is, when the circularly polarized wave is incident on a simple symmetrical object such as a plane or a spherical surface, the reflected wave becomes a polarized form with an opposite handedness, so that the circularly polarized wave has good characteristics of resisting rain and fog interference, eliminating multipath reflection and the like.
However, the circularly polarized antenna in the prior art has the problems of low gain and narrow axial ratio bandwidth, and the application of the circularly polarized antenna in some fields is influenced.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the present invention lies in overcoming the defect that there is gain on the low side in the circular polarized antenna among the prior art, and the axial ratio bandwidth is narrower to provide a circular polarized antenna.
The utility model also provides a communication equipment with circular polarized antenna.
The utility model provides a pair of circular polarized antenna has at least N × N (N is greater than or equal to 1) antenna element, antenna element from top to bottom includes in proper order:
the top metal layer consists of a metal radiation patch and a parasitic coupling unit arranged on the outer ring of the metal radiation patch;
the first dielectric layer is provided with a metal blind hole; the height of the metal blind hole is the same as the thickness of the first dielectric layer; the metal blind hole is arranged corresponding to the metal radiation patch;
the middle metal layer is etched with a coupling groove;
the second dielectric layer is internally provided with a second microstrip line;
the bottom metal layer is provided with a metal coaxial line; the metal coaxial line is connected with the second microstrip line.
Preferably, the metal radiation patches are provided with four metal radiation patches which are uniformly distributed along the circumferential direction;
the metal radiation patch includes:
the first metal radiation patch is provided with two oppositely arranged sheets; a gap is formed between the two first metal radiation patches;
the second metal radiation patch is provided with two oppositely arranged sheets; the two second metal radiating patches are connected through a first microstrip line.
Preferably, the metal radiation patch is elliptical.
Preferably, the coupling slot is disposed in the middle of the metal radiating patch.
Preferably, the coupling groove is shaped to be gradually wider from the center toward both sides.
Preferably, the metal blind hole is cylindrical and is located right below the metal radiation patch.
Preferably, the parasitic coupling unit is composed of four parasitic coupling pieces; the four parasitic coupling pieces are uniformly distributed along the circumferential direction.
As a preferred scheme, a closed feed shielding cavity is arranged on the second dielectric layer and surrounds the second microstrip line; the height of the feed shielding cavity is the same as the thickness of the second dielectric layer.
Preferably, the parasitic coupling piece is in the shape of a circular arc.
Preferably, the second microstrip line is disposed in the middle of the thickness of the second dielectric layer.
The utility model also provides a communication equipment, including any one of the aforesaid circular polarized antenna.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a circular polarized antenna sets up parasitic coupling unit in the outer lane of metal radiation paster, the effectual axial ratio bandwidth and the antenna gain that have improved the antenna.
2. The utility model provides a circular polarized antenna, the metal radiation paster includes: the antenna comprises two first metal radiation patches and two second metal radiation patches; the two first metal radiation patches and the gap jointly form a magnetic dipole; the two second metal radiating patches are connected through a first microstrip line to form an electric dipole, wherein the first microstrip line is used for enabling excitation to generate a phase difference of 90 degrees.
3. The utility model provides a circular polarized antenna sets up the feed shielding chamber in the second dielectric layer, can reduce the leakage of feed in-process energy, has effectively improved feed efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an exploded schematic view of the antenna unit of the present invention.
Fig. 2 is a schematic top view of the top metal layer shown in fig. 1.
Fig. 3 is a schematic top view of the first dielectric layer shown in fig. 1.
Fig. 4 is a schematic top view of the intermediate metal layer shown in fig. 1.
Fig. 5 is a schematic perspective view of the second medium shown in fig. 1.
Fig. 6 is a perspective schematic perspective view of the antenna unit according to the present invention.
Fig. 7 is a diagram showing simulation results of | S11| of the circular polarization antenna of embodiment 1.
Fig. 8 is a graph showing a simulation result of the gain of the circularly polarized antenna according to embodiment 1.
Fig. 9 is a graph showing the axial ratio simulation result of the circularly polarized antenna of embodiment 1.
Fig. 10 is a top view of the circularly polarized antenna of embodiment 2.
Fig. 11 is a diagram showing simulation results of | S11| of the circular polarization antenna of embodiment 2.
Fig. 12 is a graph showing a result of a gain simulation of the circularly polarized antenna of embodiment 2.
Fig. 13 is a graph showing the axial ratio simulation result of the circularly polarized antenna of example 2.
Fig. 14 is a directional diagram simulation result of the circularly polarized antenna of embodiment 2.
Description of reference numerals:
1. a top metal layer; 2. a first dielectric layer; 3. an intermediate metal layer; 4. a second dielectric layer; 5. a bottom metal layer; 6. a first metallic radiating patch; 7. a second metallic radiating patch; 8. a first microstrip line; 9. a parasitic coupling patch; 10. a metal blind hole; 11. a coupling groove; 12. a second microstrip line; 13. a feed shield cavity; 14. a metal coaxial line; 15. an antenna unit.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
The circularly polarized antenna provided in this embodiment is composed of 1 antenna unit 15, as shown in fig. 1, each antenna unit 15 sequentially includes from top to bottom: a top metal layer 1, a first dielectric layer 2, a middle metal layer 3, a second dielectric layer 4 and a bottom metal layer 5;
the top metal layer 1 consists of a metal radiation patch and a parasitic coupling unit; as shown in fig. 2, the metal radiation patch includes a first metal radiation patch 6 and a second metal radiation patch 7; the first metal radiation patch 6 is provided with two oppositely arranged metal radiation patches, a gap is arranged between the two first metal radiation patches, and the two first metal radiation patches 6 and the gap jointly form a magnetic dipole antenna;
the second metal radiating patches 7 are provided with two oppositely arranged patches, the two second metal radiating patches 7 are connected through a first microstrip line 8 to form an electric dipole antenna, wherein the first microstrip line 8 is used for enabling the phase of excitation to generate 90 degrees.
The shape of the metal radiation patch can be selected from rectangle, cone, trapezoid, ellipse, and the like, and the shape is preferably an ellipse in the embodiment; the ratio of the major axis to the width axis of the ellipse can be changed arbitrarily; meanwhile, the first metal radiation patches 6 and the second metal radiation patches 7 are sequentially and uniformly distributed along the circumference at intervals.
A parasitic coupling unit is arranged on the outer ring of the metal radiation patch and consists of four parasitic coupling pieces 9 which are uniformly distributed along the circumferential direction; the parasitic coupling piece 9 can be rectangular, triangular, circular arc and the like; the present embodiment is preferably circular arc shaped; the arc length and the bending degree of the circular-arc parasitic coupling piece 9 can be changed at will; the axial ratio bandwidth of the antenna can be effectively improved by arranging the parasitic coupling unit on the top metal layer 1.
As shown in fig. 3, four metal blind holes 10 are disposed on the first dielectric layer 2, the metal blind holes 10 are disposed at the lower end of the metal radiation patch, and the metal blind holes 10 are metal cylinders.
As shown in fig. 4, a top view of the intermediate metal layer 3; the middle metal layer 3 is a square metal patch and is the ground of the antenna; a coupling groove 11 is etched on the middle metal layer 3; the coupling slot 11 is arranged in the middle of the metal radiation patch; both ends of the coupling groove 11 are gradually widened. The metal radiation patch is electrically connected with the middle metal layer 3 through the metal blind hole 10.
As shown in fig. 5, a section of second microstrip line 12 is disposed in the middle of the thickness of the second dielectric layer 4, a closed feed shielding cavity 13 is disposed around the second microstrip line 12, and the height of the feed shielding cavity 13 is the same as the thickness of the second dielectric layer 4; the shape of the feed shield cavity 13 may be circular or rectangular, etc.; the embodiment is chosen to be square.
The bottom metal layer 5 is a square patch with the same size as the middle metal layer 3 and is also the ground of the antenna;
as shown in fig. 6, the second microstrip line 12 of the second dielectric layer 4 is connected to the bottom metal layer 5 through a metal coaxial line 14, the second microstrip line 12 is fed through the metal coaxial line 14, and the second microstrip line 12 feeds the magnetic dipole and the electric dipole through the coupling slot 11; through the arrangement of the feeding shielding cavity 13, the leakage of energy in the feeding process is greatly reduced, and the feeding efficiency is effectively improved.
The circular polarization antenna provided by the embodiment is subjected to a simulation experiment, and the adopted software platform of the simulation experiment is as follows: HFSS 19.0;
simulating parameters such as | S11|, gain, axial ratio, directional diagram and the like of the circularly polarized antenna in a frequency band of 29GHz-31.5 GHz;
as shown in fig. 7, the impedance bandwidth of the antenna is 29GHz-32 GHz;
as shown in fig. 8, the antenna gain can reach 9.5 dB;
as shown in fig. 9, the in-band ripple is less than 1 dB;
the above results show that the feed ports in the frequency band are well matched; the axial ratio of the antenna is less than 2dB in the working frequency band of the antenna. The performance requirements of high gain and low axial ratio are realized, and the performance parameters are obviously improved.
Example 2
The circularly polarized antenna provided by the present embodiment is composed of 15N × N (N ≧ 2) antenna units described in embodiment 1; as shown in fig. 10, the circular polarization antenna is composed of 5 × 5 antenna elements 15 in a certain sequence; the antenna units 15 are arranged in a row of five rows and five columns in a translation manner; meanwhile, the isolation between the antenna elements 15 can be increased by changing the spacing between the antenna elements 15; the axial ratio and gain of the 5 x 5 circularly polarized antenna were further optimized compared to the circularly polarized antenna composed of one antenna element 15 in example 1.
The circular polarization antenna provided by the embodiment is subjected to a simulation experiment, and the adopted software platform of the simulation experiment is as follows: HFSS 19.0;
simulating parameters such as | S11|, gain, axial ratio, directional diagram and the like of the circularly polarized antenna in a frequency band of 29GHz-31.5 GHz;
as shown in fig. 11, the impedance bandwidth of the antenna is 29GHz to 32 GHz;
as shown in fig. 12, the antenna gain can be up to 21 dB;
as shown in fig. 13, the in-band ripple is less than 1dB, indicating that the feed port is well matched in this frequency band;
as shown in fig. 14, the axial ratios of the antennas are all less than 1.8dB within the operating frequency band of the antenna.
Therefore, the circularly polarized antenna provided by the embodiment meets the performance requirements of high gain and low axial ratio, and the performance parameters are obviously optimized.
Example 3
The communication device provided in this embodiment includes the circularly polarized antenna described in embodiment 1 or embodiment 2.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. A circularly polarized antenna, characterized by having at least N x N (N ≧ 1) antenna elements (15), the antenna elements (15) comprising in order from top to bottom:
the top metal layer (1) is composed of a metal radiation patch and a parasitic coupling unit arranged on the outer ring of the metal radiation patch;
the first dielectric layer (2) is provided with a metal blind hole (10); the height of the metal blind hole (10) is the same as the thickness of the first dielectric layer (2); the metal blind hole (10) is arranged corresponding to the metal radiation patch;
an intermediate metal layer (3) etched with a coupling groove (11);
the second dielectric layer (4) is internally provided with a second microstrip line (12);
a bottom metal layer (5) provided with a metal coaxial line (14); the metal coaxial line (14) is connected with the second microstrip line (12).
2. The circularly polarized antenna of claim 1, wherein the metal radiating patches are four and are uniformly distributed along the circumferential direction;
the metal radiation patch includes:
a first metal radiation patch (6) having two pieces arranged oppositely; a gap is formed between the two first metal radiation patches (6);
a second metal radiation patch (7) having two pieces arranged oppositely; the two second metal radiating patches (7) are connected through a first microstrip line (8).
3. The circularly polarized antenna of claim 2, wherein the metallic radiating patch is elliptical.
4. The circularly polarized antenna of claim 2, wherein the coupling slot (11) is provided in the middle of the metallic radiating patch; the coupling groove (11) is shaped to become wider from the center toward both sides.
5. The circularly polarized antenna according to claim 1, characterized in that on the second dielectric layer (4) there is arranged a closed feed shield cavity (13) around the second microstrip line (12); the height of the feed shielding cavity (13) is the same as the thickness of the second medium layer (4).
6. The circularly polarized antenna of claim 2, wherein the metal blind hole (10) is cylindrical and is located directly below the metal radiating patch.
7. The circularly polarized antenna of any of claims 1 to 6, wherein the parasitic coupling element is composed of four parasitic coupling patches (9); the four parasitic coupling pieces (9) are uniformly distributed along the circumferential direction.
8. A circularly polarized antenna according to claim 7, wherein the parasitic coupling patch (9) has a circular arc shape.
9. A circularly polarised antenna according to claim 1, characterised in that the second microstrip line (12) is provided in a position intermediate the thickness of the second dielectric layer (4).
10. A communication device comprising a circularly polarized antenna according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023147739.5U CN213460098U (en) | 2020-12-23 | 2020-12-23 | Circularly polarized antenna and communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023147739.5U CN213460098U (en) | 2020-12-23 | 2020-12-23 | Circularly polarized antenna and communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213460098U true CN213460098U (en) | 2021-06-15 |
Family
ID=76305172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023147739.5U Active CN213460098U (en) | 2020-12-23 | 2020-12-23 | Circularly polarized antenna and communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213460098U (en) |
-
2020
- 2020-12-23 CN CN202023147739.5U patent/CN213460098U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10854994B2 (en) | Broadband phased array antenna system with hybrid radiating elements | |
| US10978812B2 (en) | Single layer shared aperture dual band antenna | |
| CN109830802B (en) | Millimeter wave dual-polarized patch antenna | |
| CN110854525A (en) | Ka-band dual-polarized antenna unit structure based on resonant cavity radiation | |
| CN113922075B (en) | Slow wave substrate integrated waveguide duplex antenna based on high-order mode | |
| CN111541019A (en) | Low-profile vertical polarization high-gain omnidirectional antenna | |
| CN109888485B (en) | Compact low-profile multi-beam microstrip antenna | |
| CN106356618B (en) | Microwave high-frequency band dual-polarization small base station panel antenna | |
| CN115051142B (en) | Multi-frequency base station antenna unit and communication equipment | |
| CN115732925A (en) | Dual-polarized antenna array with millimeter wave dual-frequency respective feeding | |
| CN210692750U (en) | Ka-band dual-polarized antenna unit structure based on resonant cavity radiation | |
| CN110233336B (en) | Series-fed circularly polarized antenna normal array | |
| CN213845512U (en) | Broadband circularly polarized antenna based on artificial magnetic conductor | |
| CN107799888B (en) | Dual-frequency high-gain patch antenna | |
| CN111355029B (en) | High-performance dual-polarized microstrip antenna for fifth-generation communication system | |
| Buravalli et al. | Simulation study of 2x3 microstrip patch antenna array for 5G applications | |
| CN213460098U (en) | Circularly polarized antenna and communication equipment | |
| CN115000727B (en) | Wide-bandwidth angle scanning array antenna unit | |
| CN116093598A (en) | Broadband dual-frequency transmission array unit, antenna and use method thereof | |
| CN215989232U (en) | Antenna and antenna array | |
| CN115528427A (en) | Millimeter wave dual-frequency dual-polarization laminated patch antenna array | |
| CN114843772A (en) | Dual-frequency dual-circular-polarization high-isolation Fabry-Perot cavity MIMO antenna and processing method thereof | |
| CN109861003B (en) | Metamaterial broadband high-isolation MIMO antenna | |
| CN210838106U (en) | Microstrip array antenna | |
| CN112736440A (en) | Circularly polarized antenna and communication equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |