CN218215687U - Single-layer double-frequency microstrip antenna device - Google Patents
Single-layer double-frequency microstrip antenna device Download PDFInfo
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- CN218215687U CN218215687U CN202222284702.XU CN202222284702U CN218215687U CN 218215687 U CN218215687 U CN 218215687U CN 202222284702 U CN202222284702 U CN 202222284702U CN 218215687 U CN218215687 U CN 218215687U
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Abstract
The utility model provides a single-deck dual-frenquency microstrip antenna device, including medium substrate, radiation piece, parasitic element, feed network and floor, the radiation piece including set up simultaneously in first radiation paster and second radiation paster on the medium substrate, first radiation paster with second radiation paster center is the same, second radiation paster central point put seted up with the opening that first radiation paster shape is the same, first radiation paster set up in the opening, the edge of first radiation paster is provided with a plurality of parasitic elements, first radiation paster with second radiation paster is provided with respectively presents the needle, present the needle with feed network electrical connection, the position evenly distributed that the second radiation paster is close to the edge has a plurality of cell bodies. The utility model discloses increase a plurality of parasitic antenna unit, fluting or increase the flesh sawtooth on the radiation piece simultaneously to reduce the product size and improve microstrip radiation performance.
Description
Technical Field
The utility model belongs to the antenna design field is received (sent out) in the wireless communication field, especially relates to a single-deck dual-frenquency microstrip antenna device.
Background
The current satellite navigation positioning equipment is increasingly widely applied in the fields such as positioning, measurement, time service, high-precision agriculture, intelligent transportation and the like. In order to obtain a high-precision positioning requirement of a decimeter level or more, an RTK (real time kinematic (RTK) method) technology is generally adopted for a navigation device, and at this time, an antenna of the device generally has a dual-frequency characteristic, and has a wider operating bandwidth (gain bandwidth, beam bandwidth and axial ratio bandwidth), a more compact size, a simpler processing and manufacturing, and the like. The microstrip patch antenna has the advantages of small shape, low cost, easy conformal, easy processing, easy realization of circular polarization and the like, and is widely applied.
The conventional microstrip antenna has the following disadvantages:
1. the traditional microstrip antenna generally adopts a laminated mode for realizing double frequency, namely one working frequency band is realized by one layer, and the two layers are superposed to realize double frequency. Although the structure is simple, the microwave dielectric material is often needed to realize the structure, and the microwave dielectric material has high cost and heavy weight.
2. The common microstrip antenna has narrow working bandwidth and cannot well cover a plurality of satellite navigation systems. If the bandwidth is increased, a medium with a low dielectric constant is often needed to be used as the antenna substrate material, and the cost of using high-frequency microwave materials is higher. If air is used as the main dielectric material, the cost can be greatly reduced. The common microstrip antenna adopts a dielectric material as a main dielectric substrate, and the dielectric substrate needs to be thickened for broadband reception, and generally reaches 8mm to 15mm especially for a low-frequency L2 frequency band. Thus, the surface waves on the surface of the antenna are increased, which affects the performance of the antenna. In addition, the antenna medium is thickened, the weight of the product is increased, and the cost is increased sharply (the cost is high). And if the single-layer medium is increased to more than 5mm, common manufacturers cannot process the medium, so that the processing difficulty is high, the processing cost is high, and the product reject ratio is increased.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defects of the prior art, the present invention aims to provide a single-layer dual-frequency microstrip antenna device, which has a wider operating bandwidth (gain bandwidth, beam bandwidth, axial ratio bandwidth), is most notable for light weight, low cost, and good stability, and meets the application requirements of dual-frequency signal reception (or transmission) of a satellite navigation system, and is especially suitable for high-precision GNSS measurement and positioning system terminal equipment.
In order to achieve the above object, the utility model provides a single-layer dual-frequency microstrip antenna device, which comprises a dielectric substrate, a radiation piece, a parasitic unit, a feed network and a floor,
the radiation piece comprises a first radiation patch and a second radiation patch which are arranged on the medium substrate at the same time, the centers of the first radiation patch and the second radiation patch are the same, the center of the second radiation patch is provided with an opening which has the same shape as the first radiation patch, the first radiation patch is arranged in the opening,
a plurality of parasitic elements are arranged at the edge of the first radiating patch,
the first radiation patch and the second radiation patch are respectively provided with a feed pin, the feed pins are electrically connected with the feed network,
a plurality of grooves are uniformly distributed at the position, close to the edge, of the second radiation patch.
Preferably, the outer edge of the first radiating patch is toothed.
Preferably, the dielectric substrate is coated with copper on the outer surface.
Preferably, the dielectric substrate is made of high-frequency materials or conventional FR4 circuit boards.
Preferably, the number of the groove bodies is 4, the groove bodies are evenly distributed at the edge positions of the second radiation patches, the groove bodies are T-shaped, and the transverse edges of the groove bodies face the openings.
Preferably, the outer edge of the second radiating patch does not exceed the dielectric substrate.
Preferably, the first radiation patch and the second radiation patch are provided with 4 feed pins and are in an orthogonal state.
Preferably, the dielectric substrate has a dielectric constant of 2.65 to 9.0 and a thickness of 0.5mm-2mm.
Preferably, the first radiation patch and the second radiation patch are metal sheets.
Preferably, the parasitic element includes a plurality of parasitic radiation pieces and a plurality of ground posts, the plurality of parasitic radiation pieces are uniformly distributed at the edge of the second radiation patch, a part of the ground posts are correspondingly disposed at the edge of the parasitic radiation piece, and the rest of the ground posts are disposed at the edge of the opening.
Compared with the prior art, through the utility model discloses an implement, reached following obvious technological effect:
the utility model adds a plurality of parasitic antenna units, and slots or muscle saw teeth are added on the radiating sheet to reduce the size of the product and improve the micro-strip radiation performance;
the utility model discloses easily take shape, owing to do not relate to techniques such as ordinary microstrip antenna's metallization via hole, make thick antenna easily to full play product property can be produced.
The utility model has low cost, and adopts a layer of medium substrate to realize the high frequency band signal reception; the main medium material is air, a plurality of parasitic antenna units are added, and slots or muscle sawteeth are arranged on the radiating sheet, so that the size of the product is reduced and the microstrip radiating performance is improved.
The conception and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, features and effects of the present invention.
Drawings
Fig. 1 is a schematic structural diagram of a single-layer dual-band microstrip antenna apparatus according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
The utility model provides a single-layer double-frequency microstrip antenna device, which comprises a medium substrate 1, a radiation piece, a parasitic unit, a feed network and a floor 2,
the radiation piece comprises a first radiation patch 3 and a second radiation patch 4 which are arranged on the medium substrate 1 at the same time, the centers of the first radiation patch 3 and the second radiation patch 4 are the same, the center of the second radiation patch 4 is provided with an opening which has the same shape as the first radiation patch 3, the first radiation patch 3 is arranged in the opening,
a plurality of parasitic elements are provided at the edge of the first radiating patch 3,
the first radiation patch 3 and the second radiation patch 4 are respectively provided with a feed pin 5, the feed pins 5 are electrically connected with the feed network,
and a plurality of grooves 6 are uniformly distributed at the position of the second radiation patch 4 close to the edge.
Wherein the first radiating patch 3 generates resonance to generate high frequency and the second radiating patch 4 generates resonance to generate low frequency, thereby forming high-low upper dual-band.
Preferably, the outer edge of the first radiating patch 3 is toothed.
Specifically, the outer edge of the first radiation patch 3 is provided with 8 tooth-shaped protrusions 31, the opening is provided with 8 grooves corresponding to the inner edge of the first radiation patch 3, the 8 tooth-shaped protrusions are embedded in the 8 grooves, and a positioning area 41 is arranged between the 8 grooves of the second radiation patch 4.
Preferably, the dielectric substrate 1 is coated with copper on the outer surface.
More preferably, the dielectric substrate 1 has a dielectric constant of 2.65 to 9.0 and a thickness of 0.5mm to 2mm.
Still preferably, the dielectric substrate 1 is made of a high-frequency material or a conventional FR4 circuit board.
Preferably, the number of the slot bodies 6 is 4, the slot bodies are uniformly distributed at the edge positions of the second radiation patches 4, the slot bodies 6 are T-shaped, and the transverse edges of the slot bodies 6 face the openings.
Preferably, the outer edge of the second radiation patch 4 does not exceed the dielectric substrate 1.
Preferably, the first radiation patch 3 and the second radiation patch 4 are each provided with 4 feed pins 5 and are in an orthogonal state.
Specifically, the first radiation patch 3 is provided with 4 feed pins 5, which are arranged in an orthogonal state near the center, and the second radiation patch 4 is provided with 4 feed pins 5, which are arranged in an orthogonal state at the positioning area corresponding to the 4 feed pins 5 of the first radiation patch 3; the 4 grooves 6 are arranged corresponding to the 4 feed needles 5.
The feed network adopts a microstrip line structure and is designed on a feed network circuit board.
Generally, the more the number of feed points of the antenna is, the better the symmetry is, and the higher the stability of the phase center is. Each layer of the antenna adopts a uniform and symmetrical 4-feed-point coaxial feed structure, and the stability of the phase center of the antenna is guaranteed in design. The feed structure adopts the upper graph form: in order to realize that the antenna receives right-hand circularly polarized waves, a micro-strip feed network is formed by two 1/4 wavelength micro-strip delay lines, two micro-strip combiners and 1 micro-strip 180 coupler, wherein two branches are inserted into the 1/4 wavelength micro-strip delay lines, so that the two combiners output 2 electric field signals with equal amplitude and 180-degree phase difference, and the electric field signals are combined by the 180-degree coupler and phase-shifted to obtain one path of in-phase signals at a terminal.
Preferably, the first radiation patch 3 and the second radiation patch 4 are metal sheets.
Specifically, the first radiation patch 3 and the second radiation patch 4 are thin copper sheets (or plated metals), which may be designed as squares, circles, or symmetrical polygons, and the size of which has an influence on the frequency. The larger the size, the lower the frequency shift.
Preferably, the parasitic element includes a plurality of parasitic radiation pieces 7 and a plurality of ground studs 8, the plurality of parasitic radiation pieces are uniformly distributed at the edge of the second radiation patch 4, wherein a part of the ground studs are correspondingly disposed at the edge of the parasitic radiation pieces, and the rest of the ground studs are disposed at the edge of the opening.
Specifically, the parasitic element includes 8 parasitic radiation pieces.
Specifically, a part of the grounding column is arranged at the positioning area, and a part of the grounding column is arranged at the parasitic radiation piece.
Specifically, the height of the grounding pole is generally 8mm-20mm.
The utility model adopts 1 medium substrate and two radiation sheets attached to one medium substrate, which is easy to process and low in cost; the parasitic antenna unit reduces the size of the product, improves the axial ratio of the antenna and improves the radiation efficiency of the antenna. The method meets the requirements of four applications of high-frequency and low-frequency signal receiving (or transmitting) of a satellite navigation system in operation, and is particularly suitable for GNSS accurate measurement and positioning system terminal equipment.
The utility model discloses a first radiation paster and the second radiation paster of antenna, on same medium substrate, wherein first radiation paster produces the resonance and produces the high frequency, and the second radiation paster resonance produces the low frequency, has realized two kinds of high, low resonant frequency.
The utility model discloses a cusp that first radiation paster edge was equipped with and the T shape cell body that second radiation paster edge was equipped with, convenient independent tuning.
The medium substrate of the utility model can adopt thin high-frequency material or conventional FR4 circuit board, is easy to manufacture and has low cost.
The utility model discloses a parasitic antenna unit has reduced the product size, has improved the antenna axis ratio, has improved the radiation efficiency of antenna.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the disclosure. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A single-layer dual-frequency microstrip antenna device is characterized by comprising a dielectric substrate, a radiation piece, a parasitic unit, a feed network and a floor,
the radiation piece comprises a first radiation patch and a second radiation patch which are arranged on the medium substrate at the same time, the centers of the first radiation patch and the second radiation patch are the same, the center of the second radiation patch is provided with an opening which has the same shape as the first radiation patch, the first radiation patch is arranged in the opening,
a plurality of parasitic elements are arranged at the edge of the first radiating patch,
the first radiating patch and the second radiating patch are respectively provided with a feed pin, the feed pins are electrically connected with the feed network,
a plurality of grooves are uniformly distributed at the position, close to the edge, of the second radiation patch.
2. The single layer dual band microstrip antenna device of claim 1 wherein the outer edge of said first radiating patch is toothed.
3. The single layer dual band microstrip antenna assembly according to claim 1 wherein said dielectric substrate is coated with copper on the outer surface.
4. The single-layer dual-band microstrip antenna device according to claim 2 wherein said dielectric substrate is made of high frequency material or conventional FR4 circuit board.
5. The single-layer dual-frequency microstrip antenna device according to claim 1 wherein the number of slots is 4, and the slots are uniformly distributed at the edge of the second radiation patch, the slots are T-shaped, and the transverse edge of the slots faces the opening.
6. The single layer dual band microstrip antenna device of claim 1 wherein said second radiating patch has an outer edge that does not extend beyond said dielectric substrate.
7. The single-layer dual-band microstrip antenna device according to claim 2 wherein the first and second radiating patches are each provided with 4 feed pins and are orthogonal.
8. The single-layer dual-frequency microstrip antenna device according to claim 1, wherein the dielectric substrate has a substrate dielectric constant of 2.65 to 9.0 and a thickness of 0.5mm to 2mm.
9. The single layer dual band microstrip antenna apparatus of claim 1 wherein said first radiating patch and said second radiating patch are metal sheets.
10. The single-layer dual-band microstrip antenna device according to claim 1 wherein the parasitic element comprises a plurality of parasitic radiating patches and a plurality of ground studs, the plurality of parasitic radiating patches are uniformly distributed and disposed at the edge of the second radiating patch, a portion of the ground studs is disposed at the edge of the parasitic radiating patch, and the rest of the ground studs are disposed at the edge of the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222284702.XU CN218215687U (en) | 2022-08-30 | 2022-08-30 | Single-layer double-frequency microstrip antenna device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222284702.XU CN218215687U (en) | 2022-08-30 | 2022-08-30 | Single-layer double-frequency microstrip antenna device |
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| Publication Number | Publication Date |
|---|---|
| CN218215687U true CN218215687U (en) | 2023-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222284702.XU Active CN218215687U (en) | 2022-08-30 | 2022-08-30 | Single-layer double-frequency microstrip antenna device |
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- 2022-08-30 CN CN202222284702.XU patent/CN218215687U/en active Active
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