Title :
An improved hat-shaped cavity-backed Archimedean spiral antenna
Author :
Xuxu Ge ; Guang Fu ; Xi Chen ; Yaojun Bai
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Antennas & Microwaves Xidian Univ., Xi´an, China
Abstract :
A novel Archimedean spiral antenna is designed and researched. The antenna is configured with a hat-shaped reflecting cavity and chip-resistor loads to improve the half power beam width and axial ratio. In the paper, the designing methodology and theoretical analysis are presented. The results show that the antenna has the broad beam width that more than 80° and low axial ratio that less than 4dB. They are better than those of traditional abnormal cavity-backed Archimedean spiral antennas. The designed antenna can be used in the ultra-wideband communication system on the mobile carrier.
Keywords :
spiral antennas; ultra wideband antennas; ultra wideband communication; axial ratio; broad beam width; chip resistor loads; half power beam width; hat shaped cavity backed Archimedean spiral antenna; hat shaped reflecting cavity; mobile carrier; ultra wideband communication system; Antenna measurements; Broadband antennas; Cavity resonators; Loaded antennas; Microwave antennas; Spirals;
Conference_Titel :
Antennas, Propagation & EM Theory (ISAPE), 2012 10th International Symposium on
Conference_Location :
Xian
Print_ISBN :
978-1-4673-1799-3
DOI :
10.1109/ISAPE.2012.6408717
