Title :
Circularly-polarised four rhombic loop antennas with high gain and broad beam
Author :
Bai, Xiaoqing ; Zhang, X.M. ; Yang, Qingxiong ; Wang, Y.H. ; Li, Luoqing
Author_Institution :
Nat. Key Lab. of Antennas & Microwave Tech., Xidian Univ., Xi´an, China
fDate :
11/1/2009 12:00:00 AM
Abstract :
A four rhombic loop antenna for circular polarisation is proposed. This antenna has a high gain of about 9.7 dBi and a broad beam of more than 130 half power beam width. Four parasitic loops are added inside the original four loops to increase the axis ratio bandwidth. A broadband balun is incorporated into the antenna for impedance matching. Details of the antenna design and experimental results are presented.
Keywords :
antenna radiation patterns; baluns; broadband antennas; electromagnetic wave polarisation; impedance matching; loop antennas; broad beam; broadband balun; circular polarisation; impedance matching; rhombic loop antennas design;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2009.1926
