CN110854528B - Single-via probe feed integrated substrate gap waveguide circularly polarized antenna - Google Patents
Single-via probe feed integrated substrate gap waveguide circularly polarized antenna Download PDFInfo
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- CN110854528B CN110854528B CN201911104655.2A CN201911104655A CN110854528B CN 110854528 B CN110854528 B CN 110854528B CN 201911104655 A CN201911104655 A CN 201911104655A CN 110854528 B CN110854528 B CN 110854528B
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- 239000000758 substrate Substances 0.000 title claims abstract description 26
- 239000000523 sample Substances 0.000 title claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 46
- 229910052751 metal Inorganic materials 0.000 claims abstract description 46
- 230000005855 radiation Effects 0.000 claims abstract description 24
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 239000003989 dielectric material Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 2
- 230000010287 polarization Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000003854 Surface Print Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000452 restraining effect Effects 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
- 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
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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
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0075—Stripline fed arrays
-
- 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
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
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- Waveguide Aerials (AREA)
Abstract
The invention discloses a single-via probe feed integrated substrate gap waveguide circularly polarized antenna, which comprises an upper dielectric plate, a lower dielectric plate and a spacing dielectric plate arranged between the upper dielectric plate and the lower dielectric plate; the upper surface of the upper dielectric plate is printed with a first copper-clad layer, a gap and a radiation patch positioned in the middle of the gap are arranged on the first copper-clad layer, the lower surface of the upper dielectric plate is provided with a microstrip line, and the radiation patch is connected with the microstrip line through a first metal via hole; the upper surface of the lower dielectric plate is printed with circular metal patches which are periodically arranged, the lower surface of the lower dielectric plate is printed with a second copper-clad layer, and each circular metal patch is connected with the second copper-clad layer through a second metal via hole. The invention can realize wide bandwidth and high gain.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a single-via probe feed integrated substrate gap waveguide circularly polarized antenna.
Background
With the wide development and application of radar technology and communication technology, the microwave technology of the low frequency band cannot meet the current requirement, and the development requirement of each microwave frequency band of space transmission is higher and higher, so that antenna researchers start to develop and research space resources of higher frequency bands, which not only requires miniaturization, light weight and good concealment and maneuverability of the antenna, but also requires the antenna to have the characteristics of wide frequency band, dual polarization and multiple frequency points in order to meet the requirement of high-capacity communication, and the patch antenna is favored in the communication field due to the advantages thereof. Compared with a linear polarization antenna, the circular polarization antenna can provide more excellent channel performance, and the circular polarization electromagnetic wave has remarkable advantages in reducing channel polarization adaptation, restraining multipath interference and the like.
Up to now, many circularly polarized antennas operating in the millimeter wave band have been reported. These antennas can be roughly classified into microstrip circular polarized antennas, metal rectangular waveguide (RectangleWaveguide, RW) circular polarized antennas, and substrate integrated waveguide (Substrate Integrated Waveguide, SIW) circular polarized antennas. However, in the millimeter wave band, the conventional circularly polarized antenna has problems such as difficulty in manufacturing a pure metal structure in the millimeter wave band, low shielding property of a feed network and complex structure. In recent years, a new type of transmission line called integrated substrate gap waveguide (Integrated Substrate Gap Waveguide, ISGW) has been proposed, which is implemented based on a multilayer dielectric plate. The ISGW encapsulates the internal microstrip line in EBG (Electromagnetic Band Gap, electromagnetic field bandgap), greatly improving shielding of the feed network. Since the antenna can be designed inside the multilayer structure of the ISGW, rather than feeding it through external coupling, the ISGW antenna is easy to realize low profile and easy to interconnect.
However, the prior art does not adopt the ISGW technology to design the circular polarized antenna, and the prior circular polarized antenna has the defects of narrow bandwidth and low gain.
Disclosure of Invention
The invention mainly solves the technical problem of providing the single-via probe feed integrated substrate gap waveguide circularly polarized antenna, which can realize wide bandwidth and high gain.
In order to solve the technical problems, the invention adopts a technical scheme that: the single-via probe feed integrated substrate gap waveguide circularly polarized antenna comprises an upper dielectric plate (1), a lower dielectric plate (3) and a spacing dielectric plate (2) arranged between the upper dielectric plate (1) and the lower dielectric plate (3); the upper surface of the upper dielectric plate (1) is printed with a first copper-clad layer (11), a gap (12) and a radiation patch (13) positioned in the middle of the gap (12) are arranged on the first copper-clad layer (11), the lower surface of the upper dielectric plate (1) is provided with a microstrip line (14), and the radiation patch (13) is connected with the microstrip line (14) through a first metal via hole (15); the upper surface of the lower dielectric plate (3) is printed with circular metal patches (31) which are arranged periodically, the lower surface of the lower dielectric plate (3) is printed with a second copper-clad layer (32), and each circular metal patch (31) is connected with the second copper-clad layer (32) through a second metal via hole (33).
Preferably, the upper dielectric plate (1), the spacing dielectric plate (2) and the lower dielectric plate (3) are bonded together.
Preferably, the radiation patch (13) is a polygon formed by cutting corners of a rectangle, and the gap (12) is a circle.
Preferably, the radiation patch (13) has two cut corners, and the two cut corner positions are positioned at the left upper corner and the right lower corner of the rectangle.
Preferably, the first metal via (15) is located in the geometric center of the radiating patch (13).
Preferably, the width of the microstrip line (14) is in a step transition.
Preferably, the circular metal patches (31) located in a predetermined range right below the radiation patch (13) are not aligned with the circular metal patches (31) of the remaining portion.
Preferably, the circular metal patches (31) form an 8×6 array, and the arrangement periods of the circular metal patches (31) of the first three rows of the 4 th column and the 5 th column and the circular metal patches (31) of the last three rows of the 4 th column and the 5 th column are respectively shifted to the outside, and the arrangement periods of the circular metal patches (31) of the third rows of the 3 rd column and the 4 th column are respectively shifted to the inside.
Preferably, the axial ratio bandwidth and the resonance depth of the resonance frequency point are adjusted by changing the size of the radiation patch (13) and the size of the chamfer.
Preferably, the upper dielectric plate (1), the spacing dielectric plate (2) and the lower dielectric plate (3) are made of dielectric materials with dielectric constants of 2.2 and loss tangents of 0.0009, and the external dimensions of the upper dielectric plate (1), the spacing dielectric plate (2) and the lower dielectric plate (3) are 30mm multiplied by 20mm multiplied by 1.549mm.
Unlike the prior art, the invention has the beneficial effects that: through adopting three-layer dielectric plate, wherein the upper surface printing of upper dielectric plate has the copper coating, be equipped with the gap on the copper coating and be located the radiation paster that forms behind the rectangle chamfer, the shape of radiation paster is the polygon that forms after the metal via hole and lower surface, the upper surface printing of lower floor dielectric plate has the circular metal paster of periodic arrangement, every circular metal paster passes through the copper coating of metal via hole lower surface and connects, interval dielectric plate separates upper dielectric plate and lower floor dielectric plate, through this kind of mode, thereby can realize wide bandwidth and high gain, easy processing has, easy integration, radiation efficiency height, be applicable to in the application of radio frequency, microwave, millimeter wave and terahertz wave, can be used to radio frequency, microwave, millimeter wave and terahertz wave antenna.
Drawings
Fig. 1 is a schematic structural diagram of a single-via probe feed integrated substrate gap waveguide circularly polarized antenna according to an embodiment of the present invention.
Fig. 2 is a schematic top view of the upper dielectric plate of the single via probe feed integrated substrate gap waveguide circularly polarized antenna shown in fig. 1.
Fig. 3 is a bottom view of the upper dielectric plate of the single via probe feed integrated substrate gap waveguide circularly polarized antenna shown in fig. 1.
Fig. 4 is a schematic top view of the lower dielectric plate of the single via probe feed integrated substrate gap waveguide circularly polarized antenna shown in fig. 1.
Fig. 5 is a bottom view of the lower dielectric plate of the single via probe feed integrated substrate gap waveguide circularly polarized antenna shown in fig. 1.
Fig. 6 is a graph of test simulation results of return loss and gain of the single-via probe feed integrated substrate gap waveguide circularly polarized antenna shown in fig. 1.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 5, a single-via probe-fed integrated substrate gap waveguide circularly polarized antenna according to an embodiment of the present invention includes an upper dielectric plate 1, a lower dielectric plate 3, and a spacing dielectric plate 2 disposed between the upper dielectric plate 1 and the lower dielectric plate 3.
The upper surface of the upper dielectric plate 1 is printed with a first copper-clad layer 11, a gap 12 and a radiation patch 13 positioned in the middle of the gap 12 are arranged on the first copper-clad layer 11, the lower surface of the upper dielectric plate 1 is provided with a microstrip line 14, and the radiation patch 13 is connected with the microstrip line 14 through a first metal via 15. In this embodiment, the first metal via 15 is located in the geometric center of the radiating patch 13. The width of the microstrip line 14 may be stepped, as shown in fig. 3, at a middle position of the microstrip line 14.
The upper surface of the lower dielectric plate 3 is printed with circular metal patches 31 which are periodically arranged, the lower surface of the lower dielectric plate 3 is printed with a second copper-clad layer 32, and each circular metal patch 31 is connected with the second copper-clad layer 32 through a second metal via hole 33. Each circular metal patch 31 forms a mushroom-type EBG structure together with the second metal via holes 33 thereon, so that a periodically arranged mushroom-type EBG structure is formed on the lower dielectric plate 3.
The spacer dielectric plate 2 is used for separating the upper dielectric plate 1 and the lower dielectric plate 3, so that a gap is formed between the upper dielectric plate 1 and the lower dielectric plate 3. The upper dielectric plate 1, the lower dielectric plate 3 and the spacing dielectric plate 2 may be bonded together or fixed together by screws.
In the directional coupler of the present embodiment, the first copper-clad layer 11 on the upper surface of the upper dielectric plate 1 corresponds to an ideal electrical conductor (PEC), the lower dielectric plate 3 corresponds to an ideal magnetic conductor (PMC), the microstrip line 14 is located between the PEC and the PMC, so that the microstrip line 14 is encapsulated therein without external interference, and one end of the microstrip line 14 is connected to the radiation patch 13 through the first metal via 15 to perform probe feeding for the radiation patch 13.
In this embodiment, the radiating patch 13 is in the shape of a polygon formed by cutting corners of a rectangle, and the slit 12 is circular.
In order to obtain a better matching effect, in the present embodiment, the arrangement period of the circular metal patches 31 located in a predetermined range just below the radiation patch 13 is not uniform with the circular metal patches 31 of the remaining portion, so that the energy fed by the microstrip line 14 can be prevented from being coupled to the mushroom-type EBG structure array, and the characteristic impedance can be effectively improved. For example, as shown in fig. 4, the circular metal patches 31 form an 8×6 array, that is, the mushroom-shaped EBG structure also forms an 8×6 array, and the arrangement periods of the circular metal patches 31 of the first three rows of the 4 th column and the 5 th column and the circular metal patches 31 of the third rows of the 4 th column and the 5 th column are respectively shifted to the outside, and the arrangement periods of the circular metal patches 31 of the third rows of the 3 rd column and the 4 th column are shifted to the inside.
The single-via probe feed integrated substrate gap waveguide circularly polarized antenna of the embodiment has the following characteristics in practical application:
the size of the radiating patch 13 and the size of the chamfer are changed to adjust the axial ratio bandwidth and the resonance depth of the resonance frequency point, but the size of the radiating patch 13 and the size of the chamfer have less influence on the-10 dB bandwidth. Specifically, the phase difference can be adjusted by changing the cut angle of the radiation patch 13, which affects the circularly polarized radiation; changing the radius of the slot 12 can adjust the axial ratio bandwidth, affecting the antenna matching.
In order to describe the single via probe feed integrated substrate gap waveguide circularly polarized antenna of the present embodiment in detail, a specific example is given below. In this specific example, rogers5880 dielectric materials having a dielectric constant of 2.2 and a loss tangent of 0.0009 were used for each of the upper dielectric plate 1, the spacer dielectric plate 2, and the lower dielectric plate 3, and the outer dimensions of the upper dielectric plate 1, the spacer dielectric plate 2, and the lower dielectric plate 3 were 30mm×20mm×1.549mm. Test results were obtained by simulation and test, and as shown in fig. 6, the simulation results showed that the antenna had an impedance bandwidth (|s) from 22.3 to 27.3GHz (20%) 11 I is lower than-10 dB), has an axial ratio bandwidth of 26.4 to 28.3GHz (7%), and an in-band gain of 7.2 to 8.4dBi.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (7)
1. The single-via probe feed integrated substrate gap waveguide circularly polarized antenna is characterized by comprising an upper dielectric plate (1), a lower dielectric plate (3) and a spacing dielectric plate (2) arranged between the upper dielectric plate (1) and the lower dielectric plate (3);
the upper surface of the upper dielectric plate (1) is printed with a first copper-clad layer (11), a gap (12) and a radiation patch (13) positioned in the middle of the gap (12) are arranged on the first copper-clad layer (11), a microstrip line (14) is arranged on the lower surface of the upper dielectric plate (1), the radiation patch (13) is connected with the microstrip line (14) through a first metal via hole (15), the radiation patch (13) is a polygon formed after rectangular corner cutting, the gap (12) is circular, the phase difference can be adjusted by changing the size of the corner cutting of the radiation patch (13), the axial ratio bandwidth can be adjusted by changing the radius of the gap (12), and the axial ratio bandwidth and the resonant depth of a resonance frequency point can be adjusted by changing the size of the radiation patch (13) and the size of the corner cutting; the width of the microstrip line (14) is in step transition;
the upper surface of the lower dielectric plate (3) is printed with circular metal patches (31) which are arranged periodically, the lower surface of the lower dielectric plate (3) is printed with a second copper-clad layer (32), and each circular metal patch (31) is connected with the second copper-clad layer (32) through a second metal via hole (33).
2. The single-via probe feed integrated substrate gap waveguide circularly polarized antenna according to claim 1, wherein the upper dielectric plate (1), the spacer dielectric plate (2) and the lower dielectric plate (3) are bonded together.
3. The single via probe feed integrated substrate gap waveguide circularly polarized antenna according to claim 1, characterized in that the radiating patch (13) has two cut corners, the two cut corner positions being located at the upper left and lower right corners of a rectangle.
4. The single via probe feed integrated substrate gap waveguide circularly polarized antenna of claim 1, wherein the first metal via (15) is located in the geometric center of the radiating patch (13).
5. The single via probe feed integrated substrate gap waveguide circularly polarized antenna according to claim 1, wherein the arrangement period of the circular metal patch (31) located in a predetermined range directly below the radiation patch (13) is not uniform with the arrangement period of the circular metal patch (31) of the remaining part.
6. The single-via probe feed integrated substrate gap waveguide circularly polarized antenna according to claim 5, wherein the circular metal patches (31) form an 8 x 6 array, and the arrangement periods of the circular metal patches (31) of the first three rows of the 4 th column and the 5 th column and the circular metal patches (31) of the third rows of the 4 th column and the 5 th column are respectively shifted to the outside, and the arrangement periods of the circular metal patches (31) of the third rows of the 3 rd column and the 4 th column are respectively shifted to the inside.
7. The single-via probe feed integrated substrate gap waveguide circularly polarized antenna according to claim 1, wherein the upper dielectric plate (1), the spacing dielectric plate (2) and the lower dielectric plate (3) are made of dielectric materials with dielectric constants of 2.2 and loss tangents of 0.0009, and the external dimensions of the upper dielectric plate (1), the spacing dielectric plate (2) and the lower dielectric plate (3) are 30mm×20mm×1.549mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019103968479 | 2019-05-14 | ||
| CN201910396847 | 2019-05-14 |
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| CN110854528A CN110854528A (en) | 2020-02-28 |
| CN110854528B true CN110854528B (en) | 2024-01-26 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872459A (en) * | 2014-03-24 | 2014-06-18 | 电子科技大学 | Novel LTCC double-layer single-feed circular polarization micro-strip patch array antenna |
| CN105958196A (en) * | 2016-06-16 | 2016-09-21 | 南京邮电大学 | Air-coupled low-profile circularly-polarized dielectric lens antenna |
| CN107359414A (en) * | 2017-07-12 | 2017-11-17 | 成都雷电微力科技有限公司 | A kind of circular polarization microstrip antenna |
| CN107946752A (en) * | 2017-10-13 | 2018-04-20 | 云南大学 | A kind of substrate integrates gap waveguide electromagnetic dipole antenna |
| CN109616764A (en) * | 2018-07-17 | 2019-04-12 | 云南大学 | Substrate integrates gap waveguide circular polarized antenna |
-
2019
- 2019-11-13 CN CN201911104655.2A patent/CN110854528B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872459A (en) * | 2014-03-24 | 2014-06-18 | 电子科技大学 | Novel LTCC double-layer single-feed circular polarization micro-strip patch array antenna |
| CN105958196A (en) * | 2016-06-16 | 2016-09-21 | 南京邮电大学 | Air-coupled low-profile circularly-polarized dielectric lens antenna |
| CN107359414A (en) * | 2017-07-12 | 2017-11-17 | 成都雷电微力科技有限公司 | A kind of circular polarization microstrip antenna |
| CN107946752A (en) * | 2017-10-13 | 2018-04-20 | 云南大学 | A kind of substrate integrates gap waveguide electromagnetic dipole antenna |
| CN109616764A (en) * | 2018-07-17 | 2019-04-12 | 云南大学 | Substrate integrates gap waveguide circular polarized antenna |
Non-Patent Citations (1)
| Title |
|---|
| 王威等."L 波段矩形切角圆极化微带天线的设计".《电子测量技术》.2010,第33卷(第12期),全文. * |
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