电讯技术2018，Vol.58Issue(6)：732-737,6.DOI:10.3969/j.issn.1001-893x.2018.06.019
采用新型馈电结构的双频宽带导航天线设计
Design of a Dual-frequency Broadband Navigation Antenna Based on New Feeding Structure
摘要
Abstract
Based on the new feed structure,a dual-frequency broadband patch antenna covering the world' s four major satellite navigation systems is designed. The design of a four-eight feed line,using the eight coaxial feed probes connected two feeding signals,effectively simplifies the complexity of the feeder net-work. Simultaneously,it ensures the gain of the antenna radiation,bandwidth and shaft performance. The dual-frequency radiation patch unit adopts the octagonal laminated structure design,and two sets of rectan-gular tuning unit are placed in each antenna element symmetry. In this way,the antenna radiation beam bandwidth is increased effectively. The dual-frequency antenna unit can guarantee good radiation gain in 1. 482~1. 617 GHz(gain bandwidth 155 MHz) high frequency and 1. 191~1. 252 GHz(gain bandwidth 61 MHz) low frequency. The 3 dB axis ratio coverage in the θ direction with high and low frequency is-60°~60°,with sensational circular polarization performance. The measured results are in good agreement with the simulation ones.关键词
导航天线/双频宽带天线/四分八馈馈电线路/正八边形贴片天线/圆极化天线Key words
navigation antenna/dual-frequency broadband antenna/four -eight feed line/octagonal patch antenna/circular polarized antenna分类
信息技术与安全科学引用本文复制引用
刘明建,林福民,肖宇杰..采用新型馈电结构的双频宽带导航天线设计[J].电讯技术,2018,58(6):732-737,6.基金项目
广州市科技创新项目(201510010093) （201510010093）
