Title :
Adaptive control method of RF-combining diversity antenna with reactance control circuits [mobile radio applications]
Author :
Tanaka, Hiroya ; Takada, J. ; Ida, I. ; Oishi, Yasuyuki
Author_Institution :
Tokyo Inst. of Technol., Japan
Abstract :
The authors have proposed an RF adaptive array antenna loaded with reactance control circuits configured with variable capacitors. In this paper, the optimization algorithms for the variable circuit constants are considered. As a result, it is shown that the steepest gradient method provides faster convergence than the perturbation method.
Keywords :
adaptive antenna arrays; array signal processing; convergence; diversity reception; gradient methods; mobile radio; optimisation; perturbation techniques; varactors; RF-combining diversity antenna; adaptive array antenna; convergence; mobile systems; perturbation method; reactance control circuits; steepest gradient method; variable capacitors; variable circuit constants optimization algorithms; Adaptive arrays; Adaptive control; Antenna arrays; Circuits; Diversity methods; Land mobile radio; Mobile antennas; Programmable control; Radio control; Radio frequency;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1551243
