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浏览/检索结果: 共1条，第1-1条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Compact broadband circularly-polarised directional universal GNSS antenna with symmetric radiation pattern and stable near-zenith coverage 期刊论文 IET MICROWAVES ANTENNAS & PROPAGATION, 2017, 卷号: Vol.11 No.5, 页码: 657-663 作者:  Liu, Q;  Li, Y;  Mo, ZG;  Liu, YA 收藏  |  浏览/下载：10/0  |  提交时间：2019/12/31 satellite navigation  directive antennas  broadband antennas  antenna radiation patterns  antenna feeds  UHF antennas  power dividers  phase shifters  electromagnetic wave polarisation  compact broadband circularly-polarised directional universal GNSS antenna  symmetric radiation pattern  near-zenith coverage  CP antennas  global navigation satellite system  circular radiating patch  semisector-annulus sheets  compact broadband four-feed circuit  out-of-phase power splitter  coupled-line power dividers  broadband phase shifters  output magnitude distribution  high-precision feed signals  gain variation  CP bandwidth  symmetric patterns  street canyons  mountainous area  frequency 1  13 GHz to 2  51 GHz