物理学报Issue(8)：1-7,7.DOI:10.7498/aps.64.084101
基于宽带吸波体的微带天线雷达散射截面缩减设计∗
Radar cross section reduction of microstrip antenna based on wide-band metamaterial absorb er
摘要
Abstract
We design a wide-band metamaterial absorber (WBMA) with stable polarization and wide incident angle by loading a lumped resistance. The full-width at half-maximum of the absorber is 98%, the bandwidth of absorbing rate of more than 90%reaches 10.42 GHz, and the peak absorbing rate is 99.9%in the normal wave incidence. Loading the WBMA around the microstrip antenna by sharing the same substrate and ground plane, we fabricate the WBMA antenna, whose radar cross section (RCS) sharply decreases in the wide frequency range. Simulation and experimental results show that the antenna’s radiation pattern is almost unchanged: just only the former gain improves 0.53 dB after loading the WBMA. Under different polarized waves, the antenna’s monostatic RCS reduction is more than 3 dB within the working frequency band and beyond the working frequency band (6.95–17.91 GHz), the maximum value is 21.2 dB. The bistatic RCS decreases significantly from−48◦ to 48◦ at the middle working frequency (8 GHz), which well achieves the antenna stealth at the wide-band frequency and wide angle.关键词
宽带超材料吸波体/微带天线/雷达散射截面缩减Key words
wide-band metamaterials absorbing/microstrip antenna/radar cross section reduction引用本文复制引用
李文惠,张介秋,屈绍波,袁航盈,沈杨,王冬骏,过勐超..基于宽带吸波体的微带天线雷达散射截面缩减设计∗[J].物理学报,2015,(8):1-7,7.基金项目
国家自然科学基金(批准号:61331005,61471388,11204378,11274389,11304393,61302023)、中国博士后科学基金(批准号:2013M532131,2013M532221)、航空科学基金(批准号:20123196015,20132796018)和陕西省基础研究计划(批准号:2013JM6005)资助的课题.* Project supported by the National Natural Science Foundation of China (Grants Nos.61331005,61471388,11204378,11274389,11304393,61302023), the China Postdoctoral Science Foundation (Grant Nos.2013M532131,2013M532221), the Aviation Science Foundation of China (Grant Nos.20123196015,20132796018), and the Fundamental Research Project of Shaanxi Province, China (Grant No.2013JM6005) （批准号:61331005,61471388,11204378,11274389,11304393,61302023）
