太赫兹科学与电子信息学报2018，Vol.16Issue(1)：101-104,109,5.DOI:10.11805/TKYDA201801.0101
具有谐波抑制功能的宽带圆极化宽缝天线
Wideband circularly polarized slot antenna with harmonic suppression
摘要
Abstract
In the microwave power transmission system, the receiving antenna has preferred to meet the requirements of light weight, small size, low profile, and easy integration with microwave circuits. A new type of wideband circularly polarized wide slot antenna with harmonic suppression is designed that can meet these requirements. The circular polarization performance is achieved by adding a cross structure having a circular patch at the end in the rectangular slot, and the chamfering structure broadens the circular polarization bandwidth. Adding an open section with a certain length on the feed-line and DGS(Defected Ground Structure) structure supports to achieve the harmonic suppression function. Considerable efforts have been devoted to study and test the reflection coefficient, axial ratio, gain and far field radiation pattern. The simulation results are in a good agreement with the measured results. The simulation results show that the antenna works well to suppress the second and third harmonics of the fundamental frequency at 5.8 GHz. The measured bandwidths for the relative impedance(S11<-10 dB) are 31.8%(from 4.5 to 6.2 GHz) and axial ratio (AR<3 dB) 37.7%(from 4.2 to 6.15 GHz), respectively, and the antenna has a stable radiation pattern and a gain of 6.7 dB at a center frequency of 5.8 GHz.关键词
缝隙天线/圆极化/谐波抑制/宽带/低剖面Key words
slot antenna/circularly polarized/harmonic suppression/wide-band/low profile分类
信息技术与安全科学引用本文复制引用
李君,刘一麟,李路,黄卡玛,杨阳..具有谐波抑制功能的宽带圆极化宽缝天线[J].太赫兹科学与电子信息学报,2018,16(1):101-104,109,5.基金项目
装备预研教部联合基金(青年人才)资助项目(6141A02033506) （青年人才）
