Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

An ultra-wideband Archimedes spiral array antenna

An Archimedes helix, array antenna technology, applied in the direction of antenna, antenna coupling, antenna array, etc., can solve the problem of difficulty in ensuring antenna directivity, impedance characteristic axial ratio characteristic fluctuation, poor antenna back radiation suppression effect, design and implementation difficulties, to achieve the effect of height reduction, improved isolation, and reduced coupling

Pending Publication Date: 2019-01-18
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems in the design of the Archimedes spiral antenna are that it is difficult to design and realize the feeding and matching structure in the ultra-wide frequency range, and it is difficult to guarantee the basic fundamentals of the antenna directivity, impedance characteristics, and axial ratio characteristics in the ultra-wide frequency range. Constant and small fluctuations, in addition, the antenna back radiation is not well suppressed, resulting in lower efficiency

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
  • An ultra-wideband Archimedes spiral array antenna
  • An ultra-wideband Archimedes spiral array antenna
  • An ultra-wideband Archimedes spiral array antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Such as Figure 3-4 As shown, an ultra-wideband Archimedes spiral array antenna includes an antenna array element a, the number of the antenna array elements is multiple, and a plurality of antenna array elements are equidistantly distributed in a plane, and each antenna array element is connected to An FSS structure b for reducing the coupling between the elements is provided between adjacent antenna elements, and the FSS structure is composed of four i-shaped anti-coupling parts that are reversed by 90 degrees from end to end.

[0035] Such as Figure 1-2 As shown, each antenna element includes a feeding unit 1 and a planar helical antenna 2, the feeding unit is connected to the central axis of the planar helical antenna, the feeding unit is orthogonal to the coaxial line of the planar helical antenna, and is located at the There is a balun zone 1b on any side. The two output amplitudes of the balun zone are equal and the phases are opposite. On the other side of the...

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

No PUM Login to View More

Abstract

An ultra-wideband Archimedes spiral array antenna includes antenna array elements; each antenna array element includes a feeding unit and a planar helical antenna, the feeding unit is connected to thecentral axis of the planar helical antenna, A feed unit is orthogonal to that coaxial line of the planar helical antenna, a balun belt is arranged on either side of the feeding unit, a correspondingcolumn of photonic crystals is etched along both sides of the balun on the other side of the feeding unit, The top of the balun band is opposite to the center of the planar helical antenna, and the new EBG structure is used to miniaturize the antenna. The novel balun feed structure is suitable for the ultra-wideband helical antenna. Archimedes helical antenna is a balanced symmetrical structure, and its feed system should also adopt the balanced feed mode. The coaxial line is the traditional ultra-wideband feed line.

Description

technical field [0001] The invention relates to an ultra-wideband Archimedes spiral array antenna in the field of satellite navigation. technical background [0002] Antennas are currently widely used in the field of military and commercial communication technology. Broadband antennas are aimed at the relative bandwidth of antenna transceiver signals. When the ratio of signal bandwidth to center frequency is less than 1%, it is called narrowband. The ratio of bandwidth to center frequency Between 1% and 25% is called broadband, and the ratio of bandwidth to center frequency is more than 25% called ultra-wideband. As a broadband antenna, the Archimedes spiral antenna has frequency-invariant characteristics. The main problems in the design of the Archimedes spiral antenna are that it is difficult to design and realize the feeding and matching structure in the ultra-wide frequency range, and it is difficult to guarantee the basic fundamentals of the antenna directivity, impeda...

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): H01Q1/38H01Q1/48H01Q1/50H01Q1/52H01Q19/10H01Q21/00H01Q21/06
CPCH01Q1/38H01Q1/48H01Q1/50H01Q1/523H01Q19/10H01Q21/0006H01Q21/061
Inventor 董建明
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com