Title :
Compact two-arm slot spiral array antenna without balun
Author :
Zhong, Shun-Shi ; Chen, Min-Hua ; Xu, Sai-Qing ; Li, Li-Xian
Author_Institution :
Sch. of Commun. & Inf. Eng., Shanghai Univ., Shanghai, China
Abstract :
A compact circularly-polarized slot spiral antenna with three couples of two-arm slot spiral elements is presented. The balun is not needed in the proposed array antenna by using a serial feeding approach. The monodirectional radiation pattern is achieved by means of a thin back cavity. The simulated and measured results show that the proposed array antenna has good performances of the axial ratio and radiation patterns.
Keywords :
Antenna arrays; Antenna feeds; Antenna measurements; Antenna radiation patterns; Arm; Impedance matching; Microstrip antenna arrays; Phased arrays; Slot antennas; Spirals;
Conference_Titel :
Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on
Conference_Location :
Barcelona, Spain
Print_ISBN :
978-1-4244-6431-9
Electronic_ISBN :
978-84-7653-472-4
