Title :
Two-dimensions beam scanning reflectarray antenna
Author :
Yuanxiao Gou ; Jiahui Fu ; Xiaoqi Fang ; Qun Wu
Author_Institution :
Dept. of Microwave Eng., Harbin Inst. of Technol., Harbin, China
Abstract :
In this paper a two-dimensions beam scanning reflectarray antenna, which is formed by novel active elements with varactor diodes loaded, is proposed and demonstrated. The active element allows continuous tuning of the scatter wave´s phase over a 360 deg range by adjusting the bias voltage of the varactor diodes, and it has a quasi-linearity phase distribution versus the capacitance characteristics. Besides, this element is only applied to the TE mode incident wave. The full wave analysis results show that the main radiation beam can be controlled to arbitrary directions with a less than 0.5 deg azimuth error by varying the bias voltage of each tunable element. And the performance of the antenna, such as maximum gain, side lobe levels, polarization and aperture efficiency are presented as well.
Keywords :
active antennas; antenna radiation patterns; capacitance; polarisation; reflectarray antennas; scanning antennas; varactors; TE mode incident wave; active elements; aperture efficiency; bias voltage; capacitance characteristics; full wave analysis; maximum gain; polarization; quasilinearity phase distribution; radiation beam; side lobe levels; tunable element; two dimensions beam scanning reflectarray antenna; varactor diodes; Aperture antennas; Azimuth; Feeds; Microwave antennas; Reflector antennas; Varactors;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2013 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4673-5315-1
DOI :
10.1109/APS.2013.6711496
