High-gain large-angle scanning cross antenna
A crisscross and crisscross vibrator technology, applied in the directions of antennas, antenna parts, antenna supports/installation devices, etc., can solve the problems of high cost, complex unit structure and process, complex processing technology, etc., so as to improve the unit gain and improve the Antenna reliability and antenna life, the effect of improving impedance matching
Inactive Publication Date: 2021-03-26
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The advantage of the orthogonal tapered slot antenna is that it has a wide bandwidth, which can realize ultra-wideband and wide-angle scanning. The disadvantage is that the unit structure is complex and the structure is required to be continuous in telecommunications. Otherwise, the resonant mode will be excited in the working frequency band and the in-band of the antenna will be deteriorated. Standing wave performance, so there are great difficulties in engineering design
The multi-layer microstrip patch antenna with multi-point feed has the disadvantages of complex processing technology and high cost, so it is rarely used in radar systems
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0029] Such as Figure 1 to Figure 3 as shown, figure 1 It is a structural view of the high-gain large-angle scanning cross antenna; figure 2 is a structural view of the feeding coaxial; image 3 It is a top view of the structure of the high-gain large-angle scanning cross antenna; the high-gain large-angle scanning cross antenna of the present invention includes a parasitic metal sheet 1, a dielectric support 2, a cross oscillator 3 and a feed coaxial 4; The structure of the high-gain and large-angle scanning cross antenna adopts a symmetrical structure as a whole, and its two polarization directions are orthogonal to each other.
[0030] The parasitic metal sheet 1 is located on the top of the high-gain large-angle scanning cross antenna for improving the impedance matching of the antenna during large-angle scanning; the dielectric support 2 is arranged between the parasitic metal sheet 1 and the Between the feeding coaxial 4, it is used to support the parasitic metal sh...
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
Login to view more Abstract
The invention discloses a high-gain large-angle scanning crisscross antenna, which comprises a parasitic metal sheet, a dielectric supporting piece, a crisscross oscillator and a feed coaxial part, wherein the parasitic metal sheet is located at the top of the high-gain large-angle scanning crossed antenna and is used for improving impedance matching of the antenna during large-angle scanning; thedielectric supporting piece is arranged between the parasitic metal sheet and the feed coaxial part and is used for supporting the parasitic metal sheet; the cross oscillator is positioned in the middle of the high-gain large-angle scanning cross antenna and is coaxially connected with the feed; the feed coaxial part is located at the bottom of the high-gain large-angle scanning cross antenna. The antenna works in the frequency band of 1.2 GHz to 1.6 GHz, and impedance matching during large-angle scanning of the antenna is improved while the gain of the antenna unit is greatly improved. According to the antenna provided by the invention, the scanning range of the antenna is improved to + / -70 degrees, the maximum standing wave of the two polarization ports is less than 2 when the antenna scans 70 degrees, and the unit gain can be greater than 8dBi in a working frequency band.
Description
technical field [0001] The invention relates to the technical field of antennas, in particular to a high-gain, large-angle scanning cross antenna. Background technique [0002] Common unit forms in the microwave frequency band include waveguide slot antennas, open waveguide radiators, orthogonal tapered slot antennas, multi-layer microstrip patch antennas with multi-point feed, and cross antennas. The waveguide slot antenna has narrow bandwidth, small scanning angle, poor scanning performance at large angles, and heavy weight in engineering applications. Open-ended waveguide radiators are suitable for S-band and above. When used in low frequencies, the size and weight are too large, and the debugging method of wide-angle matching is not flexible enough. Usually, multi-layer dielectric coverage is required. The advantage of the orthogonal tapered slot antenna is that it has a wide bandwidth, which can realize ultra-wideband and wide-angle scanning. The disadvantage is that t...
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
Login to view more IPC IPC(8): H01Q1/12H01Q1/36H01Q1/50H01Q1/00
CPCH01Q1/12H01Q1/36H01Q1/50H01Q1/005
Inventor 方佳朱庆超江涛蔡伟营张立新金谋平戴跃飞
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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
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