CN210668686U - Novel single via hole probe feed ISGW circular polarized antenna - Google Patents
Novel single via hole probe feed ISGW circular polarized antenna Download PDFInfo
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- CN210668686U CN210668686U CN201921951665.5U CN201921951665U CN210668686U CN 210668686 U CN210668686 U CN 210668686U CN 201921951665 U CN201921951665 U CN 201921951665U CN 210668686 U CN210668686 U CN 210668686U
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Abstract
The utility model discloses a novel single via hole probe feed ISGW circular 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 slab is printed with a first copper-clad layer, the first copper-clad layer is provided with a gap and a radiation patch positioned in the middle of the gap, the lower surface of the upper dielectric slab 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 periodically arranged circular metal patches, 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 utility model discloses can realize wide bandwidth and high-gain.
Description
Technical Field
The utility model relates to an antenna technology field especially relates to novel single via hole probe feed ISGW circular polarized antenna.
Background
With the wide development and application of radar technology and communication technology, the low-frequency-band microwave technology cannot meet the current requirements, and the development requirements of each microwave frequency band for space transmission are higher and higher, so that antenna researchers begin to develop and research space resources of higher frequency bands, which not only requires the miniaturization, light weight and good concealment and mobility of antennas, but also requires the characteristics of broadband, dual polarization and multi-frequency point of the antennas in order to meet the requirements of high-capacity communication, and patch antennas are favored in the communication field due to the advantages of the patch antennas. Compared with a linear polarization antenna, the circularly polarized antenna can provide more excellent channel performance, and the circularly polarized electromagnetic wave has remarkable advantages in the aspects of reducing channel polarization adaptation, inhibiting multipath interference and the like.
Up to now, there have been many reports on circularly polarized antennas operating in the millimeter wave band. These antennas can be broadly classified into microstrip circular polarization antennas, metal Rectangular Waveguide (RW) circular polarization antennas, and Substrate Integrated Waveguide (SIW) circular polarization antennas. However, in the case of millimeter-wave band application, the conventional circularly polarized antenna has some problems, such as that the structure of pure metal is difficult to manufacture in millimeter-wave band, the shielding performance of the feed network is not high, and the structure is complex. In recent years, a new type of transmission line called Integrated Substrate Gap Waveguide (ISGW) has been proposed, which is implemented based on a multi-layered dielectric board. The ISGW encapsulates the internal microstrip line in an EBG (Electromagnetic Band Gap), and greatly improves the shielding property of the feed network. The ISGW antenna is easy to implement low profile and easy to interconnect, since the antenna can be designed inside the multi-layered structure of the ISGW, rather than feeding it through external coupling.
However, the existing technology does not adopt the ISGW technology to design the circularly polarized antenna, and the existing circularly polarized antenna has the disadvantages of narrow bandwidth and low gain.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides novel single via hole probe feed ISGW circular polarized antenna, can realize wide bandwidth and high-gain.
In order to solve the technical problem, the utility model discloses a technical scheme be: providing a novel single-via-hole probe feed ISGW (integrated service gateway) circularly polarized antenna, which comprises an upper-layer dielectric plate (1), a lower-layer dielectric plate (3) and a spacing dielectric plate (2) arranged between the upper-layer dielectric plate (1) and the lower-layer dielectric plate (3); a first copper-clad layer (11) is printed on the upper surface of the upper-layer dielectric plate (1), 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-layer dielectric plate (1), and the radiation patch (13) is connected with the microstrip line (14) through a first metal through hole (15); the upper surface of the lower-layer dielectric plate (3) is printed with circular metal patches (31) which are periodically arranged, the lower surface of the lower-layer 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 rectangular corner cutting, and the slit (12) is circular.
Preferably, the radiation patch (13) has two cut corners, and the two cut corners are positioned at the upper left corner and the lower right corner of the rectangle.
Preferably, the first metal via (15) is located at the geometric center of the radiation 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 directly below the radiation patch (13) do not have the same arrangement period as the remaining circular metal patches (31).
Preferably, the circular metal patches (31) form an 8 × 6 array, and the arrangement periods of the circular metal patches (31) in the third and fourth rows, respectively, are shifted outward, and the arrangement periods of the circular metal patches (31) in the third and fourth rows, respectively, are shifted inward.
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 cutting angle.
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 dimensions of the upper dielectric plate (1), the spacing dielectric plate (2) and the lower dielectric plate (3) are 30mm × 20mm × 1.549 mm.
Be different from prior art's condition, the beneficial effects of the utility model are that: by adopting the three-layer dielectric plate, wherein the upper surface of the upper dielectric plate is printed with the copper-clad layer, the copper-clad layer is provided with a gap and a radiation patch positioned in the gap, the radiation patch is in a polygon shape formed after rectangular corner cut, the radiation patch is connected with the microstrip line of the lower surface through the metal via hole, the upper surface of the lower dielectric plate is printed with the circular metal patches which are periodically arranged, each circular metal patch is connected with the copper-clad layer of the lower surface of the metal via hole, and the upper dielectric plate and the lower dielectric plate are separated by the spacing dielectric plate.
Drawings
Fig. 1 is a schematic structural diagram of a novel single-via-hole probe feed ISGW circular polarized antenna according to an embodiment of the present invention.
Fig. 2 is a schematic top view of an upper dielectric plate of the novel single via probe fed ISGW circular polarized antenna shown in fig. 1.
Fig. 3 is a schematic bottom view of an upper dielectric plate of the novel single via probe fed ISGW circular polarized antenna shown in fig. 1.
Fig. 4 is a schematic top view of a lower dielectric plate of the novel single via probe fed ISGW circular polarized antenna shown in fig. 1.
Fig. 5 is a schematic bottom view of a lower dielectric plate of the novel single via probe fed ISGW circular polarized antenna shown in fig. 1.
Fig. 6 is a diagram of a test simulation result of return loss and gain of the novel single via probe fed ISGW circularly polarized antenna shown in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
Referring to fig. 1 to 5, the novel single via hole probe feed ISGW circular polarized antenna of the embodiment of the present invention includes an upper dielectric plate 1, a lower dielectric plate 3, and an interval 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, the first copper-clad layer 11 is provided with a gap 12 and a radiation patch 13 located in the middle of the gap 12, 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. In the present embodiment, the first metal via 15 is located at the geometric center of the radiation patch 13. The width of the microstrip line 14 may be in a step transition, as shown in fig. 3, and the width is in a step transition at the middle position of the microstrip line 14.
The upper surface of the lower dielectric plate 3 is printed with circular metal patches 31 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. Each circular metal patch 31 and the second metal via 33 thereon form a mushroom-type EBG structure, so that the mushroom-type EBG structure is formed on the lower dielectric plate 3 in a periodic arrangement.
The spacing 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 spacer dielectric plate 2 may be bonded together or fixed together by screws.
In the directional coupler of this embodiment, the first copper-clad layer 11 on the upper surface of the upper dielectric plate 1 is equivalent to an ideal electrical conductor (PEC), the lower dielectric plate 3 is equivalent 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 the embodiment, the shape of the radiation patch 13 is a polygon formed by cutting corners of a rectangle, the slot 12 is a circle, the radiation patch 13 has two cutting corners, the two cutting corners are located at opposite corners of the rectangle, and in a specific application, the two cutting corners are located at the upper left corner and the lower right corner of the rectangle.
In order to obtain a better matching effect, in the present embodiment, the arrangement period of the circular metal patch 31 located in the predetermined range directly below the radiation patch 13 is not consistent with that of the circular metal patch 31 in the rest part, 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-type EBG structure also forms an 8 × 6 array, the arrangement periods of the circular metal patches 31 in the first three rows of the 4 th row and the 5 th row and the circular metal patches 31 in the second three rows of the 4 th row and the 5 th row are respectively shifted outward, and the arrangement periods of the circular metal patches 31 in the third three rows of the 3 rd row and the 4 th row and the second three rows of the 4 th row are shifted inward.
The novel single-via-hole probe feed ISGW circularly polarized antenna of the embodiment has the following characteristics in practical application:
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 cut angle, but the size of the radiation patch 13 and the size of the cut angle have small influence on the-10 dB bandwidth. Specifically, the phase difference can be adjusted by changing the size of the cut angle of the radiation patch 13, which affects circularly polarized radiation; changing the radius of the slot 12 can adjust the axial ratio bandwidth, which has an effect on the antenna matching.
In order to describe the novel single via probe fed ISGW circular polarized antenna of the present embodiment in detail, a specific example is given below. In this specific example, an upper dielectric sheet 1, a spacer dielectric sheet 2 and a lower dielectric sheetThe plates 3 are made of Rogers5880 dielectric materials with dielectric constants of 2.2 and loss tangents of 0.0009, and the overall 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 1.549 mm. The test results are obtained through simulation and test, and as shown in fig. 6, the simulation results show that the antenna has an impedance bandwidth (| S) from 22.3 to 27.3GHz (20%)11Less than-10 dB) with an axial ratio bandwidth of 26.4 to 28.3GHz (7%) and an in-band gain of 7.2-8.4 dBi.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A novel single-via-hole probe feed ISGW circular polarization antenna is characterized by comprising an upper-layer dielectric plate (1), a lower-layer dielectric plate (3) and a spacing dielectric plate (2) arranged between the upper-layer dielectric plate (1) and the lower-layer dielectric plate (3);
a first copper-clad layer (11) is printed on the upper surface of the upper-layer dielectric plate (1), 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-layer dielectric plate (1), and the radiation patch (13) is connected with the microstrip line (14) through a first metal through hole (15);
the upper surface of the lower-layer dielectric plate (3) is printed with circular metal patches (31) which are periodically arranged, the lower surface of the lower-layer 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 novel single-via-hole probe feed ISGW circularly polarized antenna of claim 1, wherein the upper dielectric plate (1), the spacing dielectric plate (2) and the lower dielectric plate (3) are bonded together.
3. The novel single via probe feed ISGW circularly polarized antenna as claimed in claim 1, wherein said radiating patch (13) is a polygon formed by rectangular corner cut, and said slot (12) is a circle.
4. The novel single via probe feed ISGW circularly polarized antenna as claimed in claim 3, wherein said radiating patch (13) has two cut corners, said two cut corners being located at the upper left corner and the lower right corner of the rectangle.
5. The novel single via probe feed ISGW circularly polarized antenna of claim 1, wherein said first metal via (15) is located at the geometric center of the radiating patch (13).
6. The novel single via probe feed ISGW circularly polarized antenna of claim 1, wherein the width of the microstrip line (14) is in a step transition.
7. The novel single via probe feed ISGW circular polarized antenna as recited in claim 1, wherein the circular metal patches (31) within a predetermined range directly below the radiating patch (13) are not arranged in a same period as the remaining circular metal patches (31).
8. The novel single via probe feed ISGW circular polarized antenna of claim 7, wherein the circular metal patches (31) form an 8 x 6 array, and the arrangement periods of the circular metal patches (31) in the first three rows of the 4 th row, the 5 th row and the circular metal patches (31) in the last three rows of the 4 th row and the 5 th row are respectively shifted to the outside, and the arrangement periods of the circular metal patches (31) in the third three rows of the 3 rd row and the 4 th row and the third row are respectively shifted to the inside.
9. The novel single via probe feed ISGW circular polarized antenna as recited in claim 3, wherein 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 cutting angle.
10. The novel single-via-hole probe feed ISGW circular polarized antenna of 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 outer dimensions of the upper dielectric plate (1), the spacing dielectric plate (2) and the lower dielectric plate (3) are 30mm x 20mm x 1.549 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921951665.5U CN210668686U (en) | 2019-11-13 | 2019-11-13 | Novel single via hole probe feed ISGW circular polarized antenna |
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| CN201921951665.5U CN210668686U (en) | 2019-11-13 | 2019-11-13 | Novel single via hole probe feed ISGW circular polarized antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725620A (en) * | 2020-06-29 | 2020-09-29 | 重庆邮电大学 | Circular polarization millimeter wave microstrip antenna loaded with L-shaped branches |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725620A (en) * | 2020-06-29 | 2020-09-29 | 重庆邮电大学 | Circular polarization millimeter wave microstrip antenna loaded with L-shaped branches |
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