Dual-Band Dual-Sense Polarization Reconfigurable Circularly Polarized Antenna
Dual-Band Dual-Sense Polarization Reconfigurable Circularly Polarized Antenna
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DOI：
10.1109/lawp.2018.2880799
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发表时间：
2019-01-01
影响因子：
4.2
通讯作者：
Mandal, Mrinal Kanti
中科院分区：
文献类型：
--
作者：
Kumar, Pawan;Dwari, Santanu;Mandal, Mrinal Kanti
本文提出了一种新型双频圆极化槽天线。天线的远场极化可以在左圆极化和右圆极化之间进行电子切换。一个50欧米茄微带馈线被分成四个臂激发一个接地面槽。在臂中引入了p-i-n二极管，用于偏振开关。采用1.6 mm厚的FR4衬底制备了f(01) = 2.4 GHz和f(02) = 5.2 GHz的双频双感天线原型。测量到的3db轴比带宽在上下两个波段分别大于16.6%和5.7%。在无线局域网（LAN）频段测量回波损耗大于10db。
This letter presents a novel dual-band circularly polarized slot antenna. The far-field polarization of the antenna can be switched electronically between left-hand circular polarization and right-hand circular polarization. A 50 Omega microstrip feed line is divided into four arms those excite a ground plane slot. The p-i-n diodes are introduced in the arms for polarization switching. A prototype dual-band dual-sense antenna with f(01) = 2.4 GHz and f(02) = 5.2 GHz is fabricated using a 1.6 mm thick FR4 substrate. The measured 3 dB axial ratio bandwidths are more than 16.6% and 5.7% at the lower and upper bands, respectively. The measured return loss is more than 10 dB over the wireless local area network (LAN) bands.