Summary
International Symposium on Antennas and Propagation
2014
Session Number:WE1A
Session:
Number:WE1A_05
Investigation on Spectrum Estimation Extrapolation Method of Antenna Measurement
Weijun Chen, Nanjing Li, Jiao Dang, Ning Liu, Chufeng Hu,
pp.-
Publication Date:2014/12/2
Online ISSN:2188-5079
Summary:
Measurement precision of Low frequency antenna is poor for the apparent reflection from absorbers in anechoic chamber. According time-frequency transform theory, a certain bandwidth signal holds the ability of certain range resolution, so a time-domain antenna measurement model can be built. Based on real frequency bandwidth, extrapolating the frequency band to lower frequency and higher frequency by spectrum estimation, thus the broader frequency bandwidth is gained, higher range resolution can be realized, so multi-path reflection can be isolated and removed, as a result, measuring precision of antenna pattern will be improved apparently. Results from simulation and experiment show that the method is correct and effective.