A Compact Unidirectional Ultra-Wideband Circularly Polarized Antenna Based on Crossed Tapered Slot Radiation Elements
A Compact Unidirectional Ultra-Wideband Circularly Polarized Antenna Based on Crossed Tapered Slot Radiation Elements
复制标题
基于交叉锥形缝隙辐射元件的紧凑型单向超宽带圆极化天线
DOI：
10.1109/tap.2018.2867059
复制
发表时间：
2018-12-01
影响因子：
5.7
通讯作者：
Liu, Qing Huo
中科院分区：
文献类型：
--
作者：
Ding, Xiaoxiang;Zhao, Zhiqin;Liu, Qing Huo
In this communication, a novel compact and unidirectional circularly polarized antenna based on the crossed printed tapered slot radiation elements is proposed with the ultra-wideband operation. The antenna consists of two crossed tapered slot radiation elements, a compact dual-feed network, and a dial-shaped parasitic metallic strip. The tapered slot element is applied and investigated for wideband coverage within a compact size. By using the proposed parasitic patches, an additional resonant point is formed to improve the operation bandwidth for the low band. To enhance the directivity in the low band, a dial-shaped parasitic metallic strip is loaded on the top substrate. With the proposed structure, a compact volume of 0.33 lambda x 0.33 lambda x 0.3 lambda is obtained, where lambda is the free-space wavelength at the lowest frequency of 1.85 GHz. A prototype is fabricated and measured for validation. The overlapping bandwidth of the 10 dB impedance bandwidth and the 3 dB axial ratio bandwidth is 105.8% (1.85-6 GHz).
