Title :
Beam-space circular smart antenna fed by hybrid circuits
Author :
Chiba, I. ; Kihira, K. ; Yonezawa, R. ; Numazaki, T.
Author_Institution :
Mitsubishi Electr. Corp., Kanagawa, Japan
Abstract :
The circular smart antenna fed by hybrid circuits is proposed. First, in the RF frequency stage, multiple beams are formed simultaneously by hybrid circuits. In the base band procedure, these beams are weighted and combined with the diversity or adaptive algorithms. This antenna is suitable for the mobile terminal antenna because the effect of Rayleigh fading can be improved in its RF procedure.
Keywords :
Rayleigh channels; UHF antennas; adaptive antenna arrays; antenna feeds; antenna radiation patterns; diversity reception; mobile antennas; multibeam antennas; RF frequency stage; Rayleigh fading; adaptive algorithms; adaptive array antenna; circular smart antenna; diversity algorithms; feeding system; hybrid circuits; mobile terminal antenna; multibeam. antenna; radiation patterns; Adaptive arrays; Antenna arrays; Butler matrix; Circuits; Directive antennas; Diversity reception; Mobile antennas; Radio frequency; Rayleigh channels; Receiving antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
DOI :
10.1109/APS.2001.959438
