Title :
Phase compensated microstrip variable attenuator
Author :
Fukusako, T. ; Isoda, Y. ; Mita, N.
Author_Institution :
Kumamoto Univ., Japan
Abstract :
This paper is devoted to an amplitude control device with compensated phase component based on the Q control of a microstrip resonator, so that the amplitude of S21 can be controlled without phase shifting at a certain frequency. The device consists of a PIN diode and two microstrip lines coupled by an aperture slot on a ground plane. In this paper, the authors have studied both numerically and experimentally the phase compensated variable attenuator. This can be applied to an adaptive array antenna to control the nulls with a fixed main beam directivity.
Keywords :
Q-factor; adaptive antenna arrays; antenna accessories; attenuators; compensation; microstrip lines; microstrip resonators; p-i-n diodes; transmission line theory; PIN diode; Q control; adaptive array antenna; amplitude control device; aperture slot; compensated phase component; coupled microstrip lines; fixed main beam directivity; ground plane; microstrip resonator; microstrip variable attenuator; nulls control; phase compensated attenuator; transmission line model; Adaptive arrays; Adaptive control; Antenna arrays; Apertures; Attenuators; Frequency; Microstrip antenna arrays; Microstrip components; Microstrip resonators; Programmable control;
Conference_Titel :
Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific
Conference_Location :
Taipei, Taiwan
Print_ISBN :
0-7803-7138-0
DOI :
10.1109/APMC.2001.985402
