CN207459173U - A kind of air dielectric microstrip antenna and vehicle carried electronic label - Google Patents
A kind of air dielectric microstrip antenna and vehicle carried electronic label Download PDFInfo
- Publication number
- CN207459173U CN207459173U CN201721417446.XU CN201721417446U CN207459173U CN 207459173 U CN207459173 U CN 207459173U CN 201721417446 U CN201721417446 U CN 201721417446U CN 207459173 U CN207459173 U CN 207459173U
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- microstrip antenna
- air dielectric
- microstrip
- medium plate
- antenna
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Abstract
The utility model is related to a kind of air dielectric microstrip antenna and vehicle carried electronic labels.The air dielectric microstrip antenna includes：First medium plate, microstrip antenna patch, air dielectric layer, microstrip coupled feeding network, second medium plate, metal base plate.Wherein microstrip antenna patch is located at first medium plate lower surface；Microstrip antenna patch is separated with microstrip coupled feeding network by air dielectric layer；Microstrip coupled feeding network is located at second medium plate upper surface, can be according to indexs such as antenna entirety section height, adjustment axis ratio, standing waves；Metal base plate is located at second medium plate lower surface.Above-mentioned vehicle carried electronic label includes above-mentioned air dielectric microstrip antenna.The utility model uses new antenna form and feeding classification, efficiently utilizes the inner space of vehicle carried electronic label, improves gain and the efficiency of antenna, simplify system structure.
Description
Technical field
The utility model is related to microstrip antenna, more particularly to the antenna of vehicle carried electronic label in electronic toll system for road
Design.
Background technology
ETC (Electronic Toll Collection) i.e. electronic charging system without parking is intelligent transportation system neck
A special applications in domain, are current toll on the road and bridge's modes state-of-the-art in the world, and core purpose is to improve the traffic capacity.
ETC system includes being installed on the vehicle carried electronic label on vehicle (OBU) and the trackside antenna on charge station ETC tracks
(RSU), the two by dedicated short-range communication technology (Dedicated Short RangeCommunications, hereinafter referred to as
DSRC) carry out wireless communication and information exchange.Antenna sends and receivees electromagnetic signal as roadside unit and vehicle carried electronic label
Terminal, performance directly influences the realization of communication technology index.
According to the usage scenario of OBU, its low cost, high integration is usually required that.Generally antenna can be integrated in low cost
Circuit board on, poor electrical performance, loss it is larger, largely effect on the efficiency of antenna；Further, since OBU is attached on vehicle glass,
When antenna electromagnetic beam passes through front windshield, due to there is dielectric interface, electromagnetic wave can be reflected and reflected, and be changed
The antenna pattern of electromagnetic wave deteriorates the pattern characteristics of antenna.Would generally this be solved the problems, such as using parasitic element, added
The complexity of OBU antennas.
Utility model content
The purpose of this utility model is to provide a kind of air dielectric microstrip antenna, which is ensureing the same of low cost
When, antenna radiation efficiency and gain are improved, reduces influence of the vehicle glass to antenna, improves the integrated of air dielectric antenna
Degree improves space availability ratio, reduces the complexity of manufacture craft.
In order to realize the purpose of above-mentioned utility model, on the one hand, the utility model provides a kind of air dielectric microstrip day
Line, including：First medium plate, microstrip antenna patch, air dielectric layer, microstrip coupled feeding network, second medium plate, metal bottom
Plate, wherein：
The microstrip antenna patch is located at first medium plate lower surface；
The air dielectric layer is between microstrip antenna patch and microstrip coupled feeding network；
The microstrip coupled feeding network is located at second medium plate upper surface；
The metal base plate is located at second medium plate lower surface.
Optionally, for the microstrip antenna patch length and width size between 8mm-25mm, microstrip antenna patch cuts diagonally opposing corner,
Corner cut quantity is 2, and length of corner cut is between 0.5mm-8mm.
Optionally, for the first medium plate length and width size between 10-40mm, mounting hole is opened on four side of first medium plate.
Optionally, the air dielectric layer height is between 0.4mm-5mm.
Optionally, the second medium plate thickness is between 0.2mm-5mm.
Second aspect, the utility model also provide a kind of vehicle carried electronic label, including above-mentioned air dielectric microstrip antenna, go back
Including radio circuit, control circuit, shell, IC card etc..
The beneficial effects of the utility model are that antenna substantially increases antenna efficiency using air dielectric and antenna increases
Benefit；Corner cut microstrip antenna patch is made in first medium plate lower surface and is fixed by first medium plate surrounding, reduces installation
The fixed destruction to antenna optimizes antenna performance；Using microstrip coupled feeding network, circuit system can be total to feeding network
Face reduces feed complexity, adds the beamwidth of antenna.The design has taken into account miniaturization and the antenna of vehicle carried electronic label simultaneously
The promotion of performance improves the transaction success rate with roadside unit.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Attached drawing is briefly described needed in description.
Fig. 1 is a kind of structure diagram for air dielectric microstrip antenna that the utility model embodiment is related to.
Fig. 2 is a kind of side view for air dielectric microstrip antenna that the utility model embodiment is related to.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that described embodiment is only the reality of the utility model part of the embodiment rather than whole
Apply example.
A kind of air Jie microstrip antenna of this example, as shown in Figure 1,101 be first medium plate, 102 paste for microstrip antenna
Piece, 103 be air dielectric layer, and 104 be microstrip coupled feeding network, and 105 be second medium plate, and 106 be metal base plate.
Wherein：
Microstrip antenna patch 102 is located at 101 lower surface of first medium plate；Air dielectric layer 103 is located at microstrip antenna patch
Between 102 and microstrip coupled feeding network 104；Microstrip coupled feeding network 104 is located at the upper surface of second medium plate 105；Gold
Belong to the lower surface that bottom plate 106 is located at second medium plate 105.
The working frequency of the antenna is 5.8GHz, adjusts the structural parameters of antenna, the performance of antenna is optimized, wherein
The length and width size of its first medium plate 101 is respectively 30mm and 30mm, and mounting hole, microstrip antenna are opened in 101 4 side of first medium plate
The length and width size of patch 102 is respectively 18.5mm and 17.5mm, and the corner cut quantity of microstrip antenna patch is 2, and length of corner cut is
3.6mm, the thickness of air dielectric layer 103 is 2mm, and the micro-strip line width of microstrip coupled feeding network 104 is 1.5mm, long 7mm, two
The long 3.5mm of side rectangular patch, wide 3mm, 105 length and width of second medium plate are 30mm, and 106 length and width of metal base plate are 30mm.
Antenna after optimization, gain 8.5dBi, the gain of the micro-strip circular polarized antenna of more conventional FR4 medium plates,
5dB is improved, substantially increases the gain characteristic of antenna.The standing-wave ratio bandwidth of antenna, the 5% of more conventional microstrip antenna, it carries
Height improves the frequency adaptability of antenna to 10%.
Further, the corner cut form of micro-strip paster antenna 102 is not limited to diagonally opposing corner, can also slot, square corner cut
Suitable radiation patch shape can be selected according to specifically used requirement Deng, those skilled in the art, the utility model not limit
It is fixed.
Further, the medium between microstrip antenna patch 102 and microstrip coupled feeding network 104 is not limited to air Jie
Matter, can also be other media, and those skilled in the art can select suitable dielectric layer form, this practicality according to requirements
It is new not limit.
On the other hand, the utility model embodiment additionally provides a kind of vehicle carried electronic label, vehicle provided by the utility model
Electronic tag is carried to realize based on air dielectric microstrip antenna described above.Optionally, above-mentioned vehicle carried electronic label, which further includes, penetrates
Frequency circuit, control circuit, shell, IC card etc..Since the vehicle carried electronic label is made of above-mentioned air dielectric microstrip antenna, have
Effect make use of the design feature of vehicle carried electronic label, reduce the section height of electronic tag, ensure the base of label miniaturization
On plinth, the directional diagram and gain characteristic of antenna are greatly improved, improves the performance of vehicle carried electronic label, is improved and road
The transaction success rate of side unit.
Embodiment described above is only used for helping to illustrate the utility model, enables skilled artisan very
Understand well and utilize the utility model.It is new not limit the practicality yet there is no all details of detailed description for the embodiment
The type scope of application and specific embodiment.It, can be new to this practicality on the premise of the design of the utility model and principle is not departed from
Type makees various modifications and variations, and such modifications and variations are within the scope of appended claims protection.
Claims (6)
1. a kind of air dielectric microstrip antenna, which is characterized in that including：First medium plate,
Microstrip antenna patch, air dielectric layer, microstrip coupled feeding network, second medium plate, metal base plate, wherein：
The microstrip antenna patch is located at first medium plate lower surface；
The air dielectric layer is between microstrip antenna patch and microstrip coupled feeding network；
The microstrip coupled feeding network is located at second medium plate upper surface；
The metal base plate is located at second medium plate lower surface.
2. air dielectric microstrip antenna according to claim 1, which is characterized in that the microstrip antenna patch length and width ruler
Very little microstrip antenna patch cuts diagonally opposing corner between 8mm-25mm, and corner cut quantity is 2, and length of corner cut is between 0.5mm-8mm.
3. air dielectric microstrip antenna according to claim 1, which is characterized in that the first medium plate length and width size
Between 10-40mm, mounting hole is opened on four side of first medium plate.
4. air dielectric microstrip antenna according to claim 1, which is characterized in that the air dielectric layer height exists
Between 0.4mm-5mm.
5. air dielectric microstrip antenna according to claim 1, which is characterized in that the second medium plate thickness exists
Between 0.2mm-5mm.
6. a kind of vehicle carried electronic label, which is characterized in that including such as claim 1 to 4 any one of them air dielectric microstrip
Antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721417446.XU CN207459173U (en) | 2017-10-30 | 2017-10-30 | A kind of air dielectric microstrip antenna and vehicle carried electronic label |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721417446.XU CN207459173U (en) | 2017-10-30 | 2017-10-30 | A kind of air dielectric microstrip antenna and vehicle carried electronic label |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207459173U true CN207459173U (en) | 2018-06-05 |
Family
ID=62282593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721417446.XU Active CN207459173U (en) | 2017-10-30 | 2017-10-30 | A kind of air dielectric microstrip antenna and vehicle carried electronic label |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207459173U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111048888A (en) * | 2019-12-13 | 2020-04-21 | 惠州市德赛西威汽车电子股份有限公司 | Vehicle-mounted 5G antenna structure and vehicle-mounted shark fin |
-
2017
- 2017-10-30 CN CN201721417446.XU patent/CN207459173U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111048888A (en) * | 2019-12-13 | 2020-04-21 | 惠州市德赛西威汽车电子股份有限公司 | Vehicle-mounted 5G antenna structure and vehicle-mounted shark fin |
| CN111048888B (en) * | 2019-12-13 | 2021-12-31 | 惠州市德赛西威汽车电子股份有限公司 | Vehicle-mounted 5G antenna structure and vehicle-mounted shark fin |
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