Title :
Tunable bandstop filter using equal-length two-section stubs and z-domain technique
Author :
Ching-Wen Hsue ; Yu-Wei Chang ; Dong-Lin Miao
Author_Institution :
Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan
Abstract :
This paper presents a tunable bandstop filter using the shunted two-section stubs and z domain technique. The proposed filter employs varactor shunt with two-section stubs to control the center frequency. In the measured results, the center frequency is tuned from 0.9 GHz to 1.3 GHz, and the ratios of the center frequencies of next higher order harmonics to fundamental frequencies are more than 5.
Keywords :
band-stop filters; circuit tuning; frequency control; varactors; center frequency control; equal-length two-section stubs; frequency 0.9 GHz to 1.3 GHz; fundamental frequencies; higher-order harmonics; shunted two-section stubs; tunable bandstop filter; varactor shunt; z-domain technique; Band pass filters; Filtering theory; Microwave filters; Optical filters; Resonant frequency; Resonator filters; Varactors;
Conference_Titel :
Electromagnetics, Applications and Student Innovation (iWEM), 2011 IEEE International Workshop on
Conference_Location :
Taipei
Print_ISBN :
978-1-61284-462-6
Electronic_ISBN :
978-1-61284-461-9
DOI :
10.1109/iWEM.2011.6021446
