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

Volume

14

fYear

2015

fDate

2015

Firstpage

1573

Lastpage

1576

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;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2015.2413054

Filename

7061464