Antenna unit, antenna array and road side unit

An antenna unit and antenna array technology, which is applied to antenna unit combinations, antennas, slot antennas and other directions with different polarization directions, can solve the problem of narrowing the beam width of the RSU antenna, achieve stable circular polarization characteristics, improve impedance bandwidth and Axial ratio bandwidth, effect of radiation stabilization

Inactive Publication Date: 2015-02-11
SHENZHEN GENVICT TECH
View PDF2 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, under the premise of requiring high gain, the beam width of the RSU antenna will ine...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Antenna unit, antenna array and road side unit
  • Antenna unit, antenna array and road side unit
  • Antenna unit, antenna array and road side unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] like Figure 4 and Figure 5 As shown, the antenna unit of this embodiment includes a first dielectric board 10 and a second dielectric board 20 . The first dielectric plate includes an upper surface, a lower surface and a radiation patch 101 , and the radiation patch 101 can be attached to the upper surface or the lower surface of the first dielectric plate 10 . Figure 4 Shown is a preferred way, that is, the radiation patch 101 is attached to the lower surface. The second dielectric plate 20 includes a first surface 201 opposite to the lower surface of the first dielectric plate and a second surface opposite to the first surface 201 . The radiation patch can be a thin metal sheet, such as a copper sheet.

[0036]The first surface 201 is a plate made of conductive material, which is a metal grounding plate, and a plurality of coupling slots 204 for forming a multi-feed point feeding mode are opened on the first surface, and each coupling slot 204 is concave, or It...

Embodiment 2

[0041] like Image 6 As shown, based on the antenna unit of Embodiment 1, an antenna array proposed in this embodiment includes: a plurality of antenna units 42 arranged at intervals in rows and columns and a plurality of control switches 41, wherein the antenna array can be n rows and m columns, n and m are positive integers, for example Image 6 6 rows x 4 columns are shown. The antenna units in each column are connected in parallel, and the transmission lines thereof constitute the feeding network 43 , which may be composed of transmission lines such as microstrip lines, striplines, and coplanar waveguide wires as required. Moreover, the feed amplitudes of each column of antenna elements are designed according to the Chebyshev distribution, and the phases are kept in phase. Each column of antenna elements is controlled by a control switch, and no switches are used between the antenna elements, that is, individual control switches The number is the same as the number of co...

Embodiment 3

[0047] This embodiment provides a roadside unit, such as Figure 11 As shown, a position detector 80 , a communication area controller 90 and an antenna array 40 are included. Wherein, the antenna array 40 is the antenna array provided in the foregoing embodiments, which will not be repeated. The position detector 80 can be pre-set at different positions of the lane, which can be a ground induction coil or other forms of position sensors. When the vehicle enters the position where the position sensor is installed, the position sensor at this position is triggered to obtain the position information of the vehicle. , the position information of the vehicle can be the specific position coordinates of the vehicle on the lane, for example, the position coordinates take the vertical projection position of the RSU on the lane as the origin of the coordinates, including the horizontal (perpendicular to the lane extension direction) coordinate values ​​and the longitudinal (to the lane...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The application relates to an antenna unit, an antenna array and a road side unit. The antenna unit comprises a first medium plate and a second medium plate. The first medium plate comprises an upper surface, a lower surface and a radiation paster. The radiation paster is pasted on the upper surface or the lower surface of the first medium plate. The second medium plate comprises a first surface which is opposite to the lower surface in arrangement and a second surface which is back to the first surface. The first surface is a plate made of conductive material, and the first surface is provided with multiple coupling gaps used for formation of a multi-feed-point feed mode. The second surface is provided with a power divider. Compared with a conventional single-layer square paster antenna unit, impedance bandwidth and axial ratio bandwidth of the antenna are enhanced by the antenna unit via the mode of the double-layer medium plates, and a circular polarization characteristic is quite stable. Besides, the feed mode of double-feed-point gap coupling is adopted, and coupling feed is performed on the metal radiation paster arranged at the top layer via the power divider arranged at the bottom layer so that radiation is enabled to be more stable.

Description

technical field [0001] This application relates to the field of intelligent transportation (ITS: Intelligent Transportation System), in particular to an electronic non-stop toll collection system and a roadside unit used therein, as well as an antenna array and an antenna unit used by the roadside unit. Background technique [0002] The Electronic Toll Collection (ETC, Electronic Toll Collection) system based on Dedicated Short Range Communication (DSRC, Dedicated Short Range Communication) technology utilizes the on-board equipment (OBU, On-Board Unit) installed on the vehicle and the roadside system installed on the roadside. The side equipment (RSU, Road Side Unit) exchanges information during the driving process of the vehicle at the place where charging is required, so as to complete the entire charging process without stopping. [0003] In an ETC system, the antenna in the OBU is smaller with lower gain and weaker directivity, while the antenna in the RSU usually uses ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01Q1/38H01Q3/24H01Q13/10H01Q21/24G07B15/06
Inventor 周青呈徐根华林树亮李兴锐
Owner SHENZHEN GENVICT TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap