Title :
A Compact Differential Filtering Quasi-Yagi Antenna With High Frequency Selectivity and Low Cross-Polarization Levels
Author :
Jin Shi ; Xu Wu ; Zhi Ning Chen ; Xianming Qing ; Longlong Lin ; Jianxin Chen ; Zhi-Hua Bao
Author_Institution :
Sch. of Electron. & Inf., Nantong Univ., Nantong, China
Abstract :
A compact differential filtering quasi-Yagi antenna is proposed for high frequency selectivity and low cross-polarization. The proposed antenna is formed by inserting a double-sided parallel-strip line (DSPSL) filter between the driver and the reflector of the quasi-Yagi antenna. This integration enables the antenna to achieve both high frequency selectivity and compact size. An antenna prototype exhibits a 10-dB return loss bandwidth of 1.77-1.87 GHz, peak gain of 5.6 dBi, and maximum cross-polarization levels of -22/-17 dB in E-/H-planes at 1.81 GHz. The out-of-band suppression is enhanced by 14.4 and 11.8 dB at 1.67 and 1.97 GHz compared to the quasi-Yagi antenna itself, respectively.
Keywords :
UHF antennas; Yagi antenna arrays; antenna radiation patterns; filtering theory; strip lines; DSPSL filter; compact differential filtering quasi-Yagi Antenna; double-sided parallel-strip line filter; frequency 1.67 GHz to 1.97 GHz; high frequency selectivity; low cross-polarization levels; maximum cross-polarization levels; out-of-band suppression; Antenna measurements; Antennas; Gain; Matched filters; Resonator filters; Compact; differential; double-sided parallel-strip line (DSPSL); filtering antenna; low cross-polarization; quasi-Yagi antenna;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2015.2413054
