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

Improved Low Profile Low Scattering Strong Coupling Ultra-Broadband Phased Array

A low-scattering, strong-coupling technology, applied in the direction of radiating element structure, separately energized antenna array, and antenna grounding switch structure connection, etc., can solve the problems of reduced in-band scattering characteristics of antennas and increased antenna profile height, etc., to improve the unit The effect of active standing wave ratio, reducing low frequency standing wave ratio, and suppressing scattering of element mode items

Active Publication Date: 2019-09-20
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent application number is 201710509295.9 patent "Low-profile low-RCS ultra-wide bandwidth angular scanning strong mutual coupling phased array antenna based on polarization conversion material". The out-of-band RCS of the antenna is reduced and the effect is good, but the in-band scattering characteristics in the antenna operating frequency band have not been reduced.
[0006] In addition, the Chinese patent "A Low RCS Wide Bandwidth Angular Scanning Phased Array Antenna Based on Strong Mutual Coupling Effect" in the application number 201710288813.9 takes into account the requirements of phased array antennas in ultra-wideband, wide-angle beam scanning, and low RCS , but due to the use of multi-layer impedance transformation balun and one-to-two power divider structure, the profile height of the antenna increases

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
  • Improved Low Profile Low Scattering Strong Coupling Ultra-Broadband Phased Array
  • Improved Low Profile Low Scattering Strong Coupling Ultra-Broadband Phased Array
  • Improved Low Profile Low Scattering Strong Coupling Ultra-Broadband Phased Array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] refer to Figure 1 to Figure 3 , Embodiment 1 consists of a layer of periodic structures printed with closely arranged dipole units, using periodic boundary conditions to simulate the simulation of the present invention in an infinite array environment. The antenna unit structure of the present invention is described as follows: the unbalanced feeding structure of the antenna; two grounded metallized through holes; the aluminum material floor (3) with a certain thickness; the dielectric substrate for supporting the whole phased array antenna system structure (4); a printed dipole antenna unit with a strong capacitive coupling structure (5); a rectangular patch (6) for strengthening the capacitive coupling at the end of the antenna unit; a dielectric layer (7) carrying a printed patch; the first layer A wide-angle impedance matching layer (8); a second wide-angle impedance matching layer (9); and a metal periodic structure (10) on the second wide-angle impedance matching...

Embodiment 2

[0028] specifically. Each antenna element (such as figure 2 shown) respectively extend along the two-dimensional direction of the array, which can constitute figure 1 The 10×10 low RCS low profile wide bandwidth angular scanning phased array antenna. Other structures are the same as those in Embodiment 1, and will not be repeated here.

[0029] Figure 8 to Figure 1 0 gives the scattering characteristics and radiation pattern of this example 2. Figure 8 Specific example 2 is given, and example 2 does not have two layers of wide-angle impedance matching layers and the same large-area metal floor. The comparison chart of single-station RCS results when co-polarized waves are vertically incident, it can be seen that this implementation The phased array developed in Example 2 has good low RCS characteristics. Figure 9 It is a comparison chart of the single-station RCS results of the specific embodiment 2 and the reference antenna (a Vivaldi antenna array with the same oper...

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

The invention discloses an improved low-profile, low-scattering, strong-coupling, ultra-broadband phased array, which comprises a series of periodically arranged dipole radiation unit layers printed on a thin dielectric layer. A rectangular patch placed under the dipole antenna element in the layer can enhance capacitive coupling at the end of the antenna element; a metal periodic structure is added to the second wide-angle impedance matching layer of the antenna, and two grounded metallized vias are added. With asymmetric processing, the above measures can effectively improve the unit active standing wave ratio when the H-plane is scanned, and then effectively suppress the mode term scattering; the two-layer wide-angle impedance matching layer can effectively reduce the unit active standing wave ratio when the co-polarized wave is vertically incident. Station RCS. The low-RCS, low-profile, wide-bandwidth angular scanning strong mutual-coupling phased array antenna provided by the invention is especially suitable for a new generation of stealth carrier platform.

Description

technical field [0001] The invention belongs to the technical field of antenna engineering, and in particular relates to a low-profile broadband phased antenna array system with low scattering characteristics. Controlled antenna array, especially suitable for the new generation of stealth carrier platform. Background technique [0002] The phased array antenna is composed of many antenna elements. When the phase shifter is used to feed these elements with variable phase, it can realize fast beam scanning of nanosecond level. Moreover, compared with the traditional mechanical beam scanning system, the phased array antenna has a very low time delay and has no shortcomings such as motion inertia and mechanical vibration, so it is widely used in the fields of target detection, tracking, imaging, and satellite communication. In the traditional phased array antenna design, on the one hand, it is necessary to design a broadband antenna element whose element size is smaller than ha...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H01Q21/06H01Q1/38H01Q1/50
Inventor 杨仕文黄健辉陈晨杨沛吉屈世伟陈益凯
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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