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

Electrical property prediction method of offset reflector antenna based on electromechanical coupling model

A technology for electromechanical coupling and performance prediction, applied in the field of antennas

Inactive Publication Date: 2015-05-20
XIDIAN UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to ignore the coupling relationship between the structural displacement field and the electromagnetic field in the existing offset reflector antenna analysis technology, and consider the influence of one aspect alone, which leads to the failure of the offset parabolic antenna structure and thermal design. electrical separation

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
  • Electrical property prediction method of offset reflector antenna based on electromechanical coupling model
  • Electrical property prediction method of offset reflector antenna based on electromechanical coupling model
  • Electrical property prediction method of offset reflector antenna based on electromechanical coupling model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0059] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0060] refer to figure 1 As shown, the present invention is based on the electromechanical coupling model of the bias reflector antenna electrical performance prediction method, the steps are as follows:

[0061] Step 1: Establish an antenna finite element model in I-DEAS

[0062] According to the structural parameters and material properties of the offset reflector antenna, the geometric model of the antenna is determined. The structural parameters of the offset reflector antenna include antenna diameter D, focal length f, offset height H, and parent paraboloid diameter D p and focal diameter ratio F / D p ; Material properties for biased reflector antennas include density, thermal conductivity, specific heat, Poisson's ratio, modulus of elasticity, coefficient of thermal expansion, absorptivity, and emissivity. Offset reflector antenna structure see...

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 electrical property prediction method of an offset reflector antenna based on an electromechanical coupling model. The electrical property prediction method comprises the steps of: 1) establishing an antenna finite element model in I-DEAS; 2) analyzing in the I-DEAS to obtain the temperature distribution of each node of the finite element model of the offset reflector antenna; 3) reading a finite element model file in an Ansys file and computing structural deformation caused by temperature; 4) computing items of influence caused by reflector errors and feed source errors of the offset reflector antenna to aperture field amplitude-phase of the antenna; 5) computing the electrical property of the offset reflector antenna; and 6) judging whether design requirements are satisfied. The electrical property prediction method of the offset reflector antenna based on the electromechanical coupling model has the advantages that the influence of temperature on the structure of the offset reflector antenna can be accurately analyzed and the structural field and electromagnetic field coupling analysis of the offset reflector antenna is realized; and the influence of various structural errors to the working performance of the antenna is analyzed, the major structural factors can be found out, the reasonable requirement on structural precision can be given out according to actual demands, the development cycle is shortened and the development cost is reduced.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a method for predicting the electrical performance of an offset reflector antenna based on an electromechanical coupling model. Background technique [0002] Offset Reflector Antennas are widely used in various radars such as mobile communication satellites, high-power microwave weapons, and search and reconnaissance. When the working frequency band is high, structural factors have a great influence on the radiation performance of the antenna. The demand for low sidelobes brought about by the application of large deployable film or cable-net offset parabolic antennas requires the accurate calculation of the influence of surface errors on antenna sidelobes. The structural factors affecting the electrical performance of the biased parabolic antenna mainly include the surface error of the reflector and the error of the feed source. The surface error of the reflective surface incl...

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): G01R31/00
Inventor 王从思徐慧娟李兆段宝岩康明魁王伟黄进保宏
Owner XIDIAN UNIV
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