共振器天线
轴比
通信卫星
物理
多波段设备
有效载荷(计算)
光学
天线(收音机)
Ka波段
卫星
计算机科学
电气工程
工程类
谐振器
圆极化
电信
微带线
计算机网络
天文
网络数据包
作者
Hao Xu,Zhijiao Chen,Haiwen Liu,Le Chang,Taotao Huang,Sheng Ye,Lina Zhang,Chao Du
出处
期刊:IEEE Transactions on Vehicular Technology
[Institute of Electrical and Electronics Engineers]
日期:2022-04-01
卷期号:71 (4): 4449-4453
被引量:23
标识
DOI:10.1109/tvt.2022.3144414
摘要
A single-fed dual-band dielectric resonator antenna (DRA) with orthogonal circular polarizations (CPs) in K - and Ka -bands is proposed for satellite communications on unmanned aerial vehicle (UAV). The antenna overcomes the challenges of dual-band dual-CP operation, narrow axial-ratio bandwidth (ARBW) of single-fed antennas, and limited payload and space of UAVs. A shared-aperture merged-structure technique of DRA and slot-dipole antenna is proposed for dual-band dual-CP radiation, thus enabling full-duplex operation with compact size for high isolation systems. The orthogonal CPs in two frequency bands can be controlled independently by a phase compensation method. Besides, broadened ARBW and enhanced gain are attained from the stacked DR, from which high capacity and reliability communication can be achieved. A prototype operating at right-handed CP (RHCP) in the lower band, whereas left-handed CP (LHCP) in the upper band has been designed and measured. It features 10-dB impedance bandwidths of 6.4% and 12.8%, and 3-dB ARBW of 5.2% and 4.1% in the lower and upper bands, respectively. The antenna provides a low cost solution for high isolation, high throughput, and small payload full-duplex UAV satellite systems.
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