CN210489823U - Ground plane multi-annular slotted miniaturized dual-frequency low-profile directional antenna - Google Patents
Ground plane multi-annular slotted miniaturized dual-frequency low-profile directional antenna Download PDFInfo
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- CN210489823U CN210489823U CN201921731219.3U CN201921731219U CN210489823U CN 210489823 U CN210489823 U CN 210489823U CN 201921731219 U CN201921731219 U CN 201921731219U CN 210489823 U CN210489823 U CN 210489823U
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Abstract
The utility model provides a ground plane multi-ring slotted miniaturized double-frequency low-profile directional antenna, which comprises a first dielectric substrate (1) and a second dielectric substrate (2) which are arranged up and down and are parallel to each other; radiation patches are pasted on the upper surface and the lower surface of the first dielectric substrate; the lower surface of the second dielectric substrate is covered with a ground plate patch (6); the ground plate patch is sequentially provided with an inner gap groove (63), a middle gap groove (62) and an outer gap groove (61) from the center to the edge direction; the utility model discloses can cover GPS L1, L2 frequency channel, the functional, small in size, the directionality is good, is fit for using in satellite navigation equipment.
Description
Technical Field
The utility model belongs to the technical field of the antenna technique and specifically relates to a ground plane multi-ring fluting miniaturization dual-frenquency low section directional aerial.
Background
One of the fields which are developed most rapidly and actively in the communication field at present is wireless communication, and the satellite navigation technology is widely applied in the wireless communication field due to the convenient navigation and positioning technology, and the military field and the civil field of the country are influenced and changed continuously. The antenna is a bridge between a user terminal and satellite navigation communication and is the most common part in a wireless communication system, and the rapid development of the antenna generates great impetus for the field of wireless communication, thereby promoting the revolution of the antenna concept and the innovation of the technology.
The circularly polarized antenna has the characteristic of reducing the multipath reflection effect and the Faraday rotation effect, and is widely applied to satellite application. In some applications, the GPS antenna needs to operate in both the L1(1575 MHz) and L2(1227MHz) frequency bands.
In recent years, dual-band antennas capable of operating in satellite navigation terminals have been proposed in large numbers. For example, the dual-frequency antenna is realized by adopting a planar inverted F structure, the dual-frequency transmission is realized by selecting a proper feed point by adopting a micro-strip antenna structure of a probe feed structure, and the dual-frequency and three-frequency bands are realized by adopting antennas with structures of micro-strip line feed, planar monopole antennas and the like, wherein a ground plane and a feed line are respectively arranged on two sides of a dielectric plate. And dual-band radiation is realized by slot loading and superposition of parasitic patches.
In terms of the current development trend and application requirements of the antenna, particularly the application requirements, the use environment and the performance of the satellite navigation antenna are continuously improved, the single-frequency antenna can only receive signals of a specified single frequency band, the bandwidth is narrow, the application range is small, the function is single, and the satellite navigation antenna faces a plurality of challenges such as multi-band, miniaturization, integration and the like in the state of rapid development of the current satellite navigation technology. The application of the multi-frequency antenna can meet higher requirements of wide application range, various functions, wider receiving frequency band, integration, strong practicability and the like.
Disclosure of Invention
The utility model provides a ground plane multi-ring shape fluting miniaturization dual-frenquency low section directional aerial can cover GPSL1, L2 frequency channel, and the functional, small in size, the directionality is good, is fit for using in mobile terminal equipment.
The utility model adopts the following technical scheme.
A ground plane multi-ring slotted miniaturized dual-frequency low-profile directional antenna comprises a first dielectric substrate (1) and a second dielectric substrate (2) which are arranged up and down and are parallel to each other; radiation patches are pasted on the upper surface and the lower surface of the first dielectric substrate; the lower surface of the second dielectric substrate is covered with a ground plate patch (6); the ground plate patch is sequentially provided with an inner gap groove (63), a middle gap groove (62) and an outer gap groove (61) from the center to the edge direction.
The radiation patch comprises an asymmetric rectangular ring patch (3) and an asymmetric monopole radiator (5) which are arranged on the upper surface of the first dielectric substrate, and also comprises an asymmetric bending ring patch (4) which is arranged on the lower surface of the first dielectric substrate; in the overlooking direction, the asymmetric bent ring patches are positioned in the asymmetric rectangular ring patches, and the asymmetric bent ring patches are not connected with the asymmetric rectangular ring patches.
The left lower corner (32) of the asymmetric rectangular ring patch is in a rectangular patch shape, the left upper corner (31) of the asymmetric rectangular ring patch and the right lower corner (33) of the asymmetric rectangular ring patch are in inverted L-shaped patch shapes, and the middle position (35) above the asymmetric rectangular ring patch and the middle position (34) on the right of the asymmetric rectangular ring patch are in asymmetric T-shaped patch shapes.
The left lower corner (45) of the asymmetric bending ring patch and the right lower corner (42) of the asymmetric bending ring patch are both in a square patch shape, and the left lower corner of the asymmetric bending ring patch is also provided with an L-shaped gap (46) formed by etching; the position of the upper right corner (41) of the asymmetric bending ring patch is in a bending patch shape; rectangular patches are arranged at the left upper concave angle (43) of the asymmetric bending ring patch and the left lower concave angle (44) of the asymmetric bending ring patch.
The lower part of the asymmetric monopole radiator is in an inverted L shape, and the upper right part of the asymmetric monopole radiator is in a zigzag patch shape.
The inner slot (63), the intermediate slot (62) and the outer slot (61) have different widths.
The inner slot (63), the intermediate slot (62) and the outer slot (61) each form a closed shape around the center of the ground plate patch in a top view.
The inner slot (63), the middle slot (62) and the outer slot (61) all form a closed rectangle surrounding the center of the ground plate patch;
the four corners of a rectangle enclosed by the inner gap grooves are in a corner-cutting bending structure, and an inward-concave rectangular gap structure is etched in the middle of the four sides of the rectangle;
and a convex rectangular gap structure is etched at the middle position of four sides of the rectangle surrounded by the middle gap grooves.
The asymmetric monopole radiator (5) forms an upper and lower feed structure through a coaxial cable (7); the inner core of the coaxial cable is connected with the asymmetric monopole radiator; the inner core of the coaxial cable is connected with the center of the grounding plate patch.
The first dielectric substrate (1) and the second dielectric substrate (2) are separated by an air layer.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model is not only simple, reasonable in structural design, can realize the dual-band radiation of antenna moreover, the design of defect gap structure ground plate has both reduced the section height of antenna simultaneously, has also guaranteed that the antenna has good directional radiation characteristic at satellite navigation dual-band, is fit for using in satellite navigation mobile terminal equipment.
Drawings
The invention will be described in further detail with reference to the following drawings and detailed description:
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic view at the upper surface of a first dielectric substrate;
FIG. 4 is a schematic view at the lower surface of a first dielectric substrate;
FIG. 5 is a schematic view at the lower surface of a second dielectric substrate;
FIG. 6 is a diagram of a reflection coefficient simulation result according to an embodiment of the present invention;
FIG. 7 is a graph of axial ratio gain simulation results of an embodiment of the present invention;
fig. 8 is a XOZ plane radiation pattern of the embodiment of the present invention in a low frequency band;
fig. 9 is a YOZ plane radiation pattern of the embodiment of the present invention in a low frequency band;
fig. 10 is a XOZ plane radiation pattern of the embodiment of the present invention in the high frequency band;
fig. 11 is a YOZ plane radiation pattern of the embodiment of the present invention in a high frequency band;
in the figure: 1-a first dielectric substrate; 2-a second dielectric substrate; 3-an asymmetric rectangular ring patch; 4-asymmetric flex ring patch; 5-asymmetric monopole radiator; 6-ground plate pasting;
31-upper left corner of asymmetric rectangular ring patch; 32-lower left corner of asymmetric rectangular ring patch; 33-lower right corner of asymmetric rectangular ring patch; 34-the middle position of the right side of the asymmetric rectangular ring patch; 35-the middle position above the asymmetric rectangular ring patch;
41-asymmetric flex ring patch top right corner; 42-asymmetric flex ring patch lower right corner; 43-asymmetric bend ring patch upper left reentrant corner; 44-asymmetric flex ring patch left lower reentrant corner; 45-lower left corner of the asymmetric flex ring patch; 46-L-shaped slits;
61-outer slot; 62-a median slot; 63-inner slot groove.
Detailed Description
As shown in fig. 1-11, a ground plane multi-loop slotted miniaturized dual-band low-profile directional antenna comprises a first dielectric substrate 1 and a second dielectric substrate 2 which are arranged in parallel up and down; radiation patches are pasted on the upper surface and the lower surface of the first dielectric substrate; the lower surface of the second dielectric substrate is covered with a ground plate patch 6; the ground plate patch is sequentially provided with an inner slot 63, a middle slot 62 and an outer slot 61 from the center to the edge direction.
The radiation patch comprises an asymmetric rectangular ring patch 3 and an asymmetric monopole radiator 5 which are arranged on the upper surface of the first dielectric substrate, and also comprises an asymmetric bending ring patch 4 which is arranged on the lower surface of the first dielectric substrate; in the overlooking direction, the asymmetric bent ring patches are positioned in the asymmetric rectangular ring patches, and the asymmetric bent ring patches are not connected with the asymmetric rectangular ring patches.
The asymmetric rectangular ring patch left lower corner 32 is in a rectangular patch shape, the asymmetric rectangular ring patch left upper corner 31 and the asymmetric rectangular ring patch right lower corner 33 are in inverted L-shaped patch shapes, and the asymmetric rectangular ring patch upper middle position 35 and the asymmetric rectangular ring patch right middle position 34 are in asymmetric T-shaped patch shapes.
The left lower corner 45 of the asymmetric bending ring patch and the right lower corner 42 of the asymmetric bending ring patch are both in the shape of square patches, and the left lower corner of the asymmetric bending ring patch is also provided with an etched L-shaped gap 46; the position of the upper right corner 41 of the asymmetric bending ring patch is in a bending patch shape; rectangular patches are arranged at the left upper concave angle 43 of the asymmetric bending ring patch and the left lower concave angle 44 of the asymmetric bending ring patch.
The lower part of the asymmetric monopole radiator is in an inverted L shape, and the upper right part of the asymmetric monopole radiator is in a zigzag patch shape.
The widths of the inner slot 63, the intermediate slot 62 and the outer slot 61 are different.
The inner slot 63, the middle slot 62 and the outer slot 61 each form a closed shape around the center of the ground plate patch in a top view.
The inner slot 63, the middle slot 62 and the outer slot 61 all form a closed rectangle around the center of the ground plate patch;
the four corners of a rectangle enclosed by the inner gap grooves are in a corner-cutting bending structure, and an inward-concave rectangular gap structure is etched in the middle of the four sides of the rectangle;
and a convex rectangular gap structure is etched at the middle position of four sides of the rectangle surrounded by the middle gap grooves.
The asymmetric monopole radiator 5 forms an upper and lower feed structure through a coaxial cable 7; the inner core of the coaxial cable is connected with the asymmetric monopole radiator; the inner core of the coaxial cable is connected with the center of the grounding plate patch.
The first dielectric substrate 1 and the second dielectric substrate 2 are separated by an air layer.
In this example, the antenna can excite the GPS (1575.42 ± 2.046MHz) and (1227.6 ± 2.046MHz) frequency bands by adjusting the asymmetric rectangular ring patch 3, the asymmetric bent ring patch 4, and the asymmetric monopole radiator 5, and can realize the directional radiation of the antenna by adjusting the position, size, and other parameter values of the outer slot 61, the middle slot 62, and the inner slot 63 of the ground plate 6 with the defective slot structure.
Claims (10)
1. A ground plane multi-ring slotted miniaturized dual-frequency low-profile directional antenna is characterized in that: the directional antenna comprises a first dielectric substrate (1) and a second dielectric substrate (2) which are arranged up and down and are parallel to each other; radiation patches are pasted on the upper surface and the lower surface of the first dielectric substrate; the lower surface of the second dielectric substrate is covered with a ground plate patch (6); the ground plate patch is sequentially provided with an inner gap groove (63), a middle gap groove (62) and an outer gap groove (61) from the center to the edge direction.
2. The ground plane multi-loop slotted miniaturized dual-band low-profile directional antenna of claim 1, wherein: the radiation patch comprises an asymmetric rectangular ring patch (3) and an asymmetric monopole radiator (5) which are arranged on the upper surface of the first dielectric substrate, and also comprises an asymmetric bending ring patch (4) which is arranged on the lower surface of the first dielectric substrate; in the overlooking direction, the asymmetric bent ring patches are positioned in the asymmetric rectangular ring patches, and the asymmetric bent ring patches are not connected with the asymmetric rectangular ring patches.
3. The ground plane multi-loop slotted miniaturized dual-band low-profile directional antenna of claim 2, wherein: the left lower corner (32) of the asymmetric rectangular ring patch is in a rectangular patch shape, the left upper corner (31) of the asymmetric rectangular ring patch and the right lower corner (33) of the asymmetric rectangular ring patch are in inverted L-shaped patch shapes, and the middle position (35) above the asymmetric rectangular ring patch and the middle position (34) on the right of the asymmetric rectangular ring patch are in asymmetric T-shaped patch shapes.
4. The ground plane multi-loop slotted miniaturized dual-band low-profile directional antenna of claim 2, wherein: the left lower corner (45) of the asymmetric bending ring patch and the right lower corner (42) of the asymmetric bending ring patch are both in a square patch shape, and the left lower corner of the asymmetric bending ring patch is also provided with an L-shaped gap (46) formed by etching; the position of the upper right corner (41) of the asymmetric bending ring patch is in a bending patch shape; rectangular patches are arranged at the left upper concave angle (43) of the asymmetric bending ring patch and the left lower concave angle (44) of the asymmetric bending ring patch.
5. The ground plane multi-loop slotted miniaturized dual-band low-profile directional antenna of claim 2, wherein: the lower part of the asymmetric monopole radiator is in an inverted L shape, and the upper right part of the asymmetric monopole radiator is in a zigzag patch shape.
6. The ground plane multi-loop slotted miniaturized dual-band low-profile directional antenna of claim 1, wherein: the inner slot (63), the intermediate slot (62) and the outer slot (61) have different widths.
7. The ground plane multi-loop slotted miniaturized dual-band low-profile directional antenna of claim 1, wherein: the inner slot (63), the intermediate slot (62) and the outer slot (61) each form a closed shape around the center of the ground plate patch in a top view.
8. The ground plane multi-loop slotted miniaturized dual-band low-profile directional antenna of claim 1, wherein: the inner slot (63), the middle slot (62) and the outer slot (61) all form a closed rectangle surrounding the center of the ground plate patch;
the four corners of a rectangle enclosed by the inner gap grooves are in a corner-cutting bending structure, and an inward-concave rectangular gap structure is etched in the middle of the four sides of the rectangle;
and a convex rectangular gap structure is etched at the middle position of four sides of the rectangle surrounded by the middle gap grooves.
9. The ground plane multi-loop slotted miniaturized dual-band low-profile directional antenna of claim 2, wherein: the asymmetric monopole radiator (5) forms an upper and lower feed structure through a coaxial cable (7); the inner core of the coaxial cable is connected with the asymmetric monopole radiator; the inner core of the coaxial cable is connected with the center of the grounding plate patch.
10. The ground plane multi-loop slotted miniaturized dual-band low-profile directional antenna of claim 1, wherein: the first dielectric substrate (1) and the second dielectric substrate (2) are separated by an air layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921731219.3U CN210489823U (en) | 2019-10-16 | 2019-10-16 | Ground plane multi-annular slotted miniaturized dual-frequency low-profile directional antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921731219.3U CN210489823U (en) | 2019-10-16 | 2019-10-16 | Ground plane multi-annular slotted miniaturized dual-frequency low-profile directional antenna |
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| CN210489823U true CN210489823U (en) | 2020-05-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571521A (en) * | 2019-10-16 | 2019-12-13 | 福州大学 | Ground plane multi-annular slotted miniaturized dual-frequency low-profile directional antenna |
| CN112993547A (en) * | 2021-02-05 | 2021-06-18 | 安徽华米信息科技有限公司 | Electronic equipment and manufacturing method of antenna structure thereof |
-
2019
- 2019-10-16 CN CN201921731219.3U patent/CN210489823U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571521A (en) * | 2019-10-16 | 2019-12-13 | 福州大学 | Ground plane multi-annular slotted miniaturized dual-frequency low-profile directional antenna |
| CN110571521B (en) * | 2019-10-16 | 2024-02-06 | 福州大学 | Ground plane multi-ring slotting miniaturized double-frequency low-profile directional antenna |
| CN112993547A (en) * | 2021-02-05 | 2021-06-18 | 安徽华米信息科技有限公司 | Electronic equipment and manufacturing method of antenna structure thereof |
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