电波科学学报2024，Vol.39Issue(2)：355-360,6.DOI:10.12265/j.cjors.2023070
一种新型双频双圆极化复合微带天线设计
Design of a new dual-band dual-circularly polarized composite microstrip antenna
摘要
Abstract
For the application scenario of space microwave energy collection,a dual-port dual-band dual-circularly polarized composite microstrip antenna excited by traveling-wave microstrip line is proposed.The antenna is composed of a microstrip ring operating in the low frequency band and a microstrip disk operating in the high frequency band.The antenna is fed through the coupling of two separate orthogonal cross-slots respectively,and circular polarization is achieved using four feeders on a cascaded microstrip line that are progressively rotated by 90 degrees.The entire antenna is symmetrically constructed,and the input from two different ports can produce dual circular polarization performance.The experimental results show that the relative impedance bandwidth of S11<-10 dB in 880-960 MHz band and 1.85-2.45 GHz band is 8.7%and 30%,respectively.In the 885-920 MHz frequency band and 1.86-2.43 GHz frequency band,the axial ratio is less than 3 dB,and the relative bandwidth of circular polarization is 4%and 29%respectively.The radiation pattern of the antenna is good within the operating band,with gain of 5.4 dB in the lower band and 7.7 dB in the higher band.The antenna compact design and simple processing techniques provide a novel viewpoint on the development of dual-port dual-band dual-circularly polarized antennas.关键词
缝隙耦合/行波激励/双频双圆极化/复合天线Key words
aperture coupling/traveling-wave excitation/dual-band dual-circularly polarized/composite antenna分类
信息技术与安全科学引用本文复制引用
傅世强,付笑茹,李婵娟,王钟葆..一种新型双频双圆极化复合微带天线设计[J].电波科学学报,2024,39(2):355-360,6.基金项目
国家自然科学基金(61871417) （61871417）
