Title :
A "Zoom-in" Scanning Array for Wireless Communications
Author :
Wang, Xing ; Wang, Yuanxun Ethan
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA
Abstract :
A small supergain circular array with electronic scanning and "zoom-in" features has been proposed. The array utilizes the orthogonal modes existing in the array systems as bases for beamforming. A mode-decomposition network is proposed that separates the different modes into different circuit ports and matches them individually. Consequentially the modes can be combined to achiever higher gain and directivity than a single antenna with very little increase in the occupied space. The modes can also be combined in a certain fashion to allow electronic scanning. The beamwidth and the gain of the radiation pattern can be controlled according to the order of the modes
Keywords :
antenna arrays; antenna radiation patterns; radiocommunication; beamforming; circular array; electronic scanning; mode-decomposition network; radiation pattern; wireless communications; zoom-in scanning array; Antenna arrays; Antenna radiation patterns; Antenna theory; Array signal processing; Bandwidth; Circuits; Dipole antennas; Numerical simulation; Transceivers; Wireless communication; "zoom-in"; electronic scanning; mode-decomposition network; supergain antenna;
Conference_Titel :
Radio and Wireless Symposium, 2007 IEEE
Conference_Location :
Long Beach, CA
Print_ISBN :
1-4244-0445-2
Electronic_ISBN :
1-4244-0445-2
DOI :
10.1109/RWS.2007.351875
