Title :
Half Wavelength Open Loop Bandpass Filters with Transmission Zeros
Author :
Jayatilaka, Himal C. ; Klymyshyn, David M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Saskatchewan, Saskatoon, SK
Abstract :
This paper presents a novel source/load multi-resonator coupling method with greater design flexibility for microstrip single mode coupled resonator filters. Source/load coupling with multiple resonators is useful for obtaining additional transmission zeros and high rejection at finite frequencies in the stopband. A narrow arm which is connected to the source or load and designed for obtaining the coupling with a nearby resonator is extended to the non-adjacent resonator of the source or load to obtain bypass coupling. Filters with transmission zeros both in upper and lower stopbands are synthesized and designed using microstrip half wavelength folded resonators.
Keywords :
band-pass filters; band-stop filters; microstrip couplers; microstrip filters; resonator filters; bypass coupling; microstrip single mode coupled resonator filters; multiresonator coupling method; open loop bandpass filters; stopband; transmission zeros; Band pass filters; Couplings; Design engineering; Filtering theory; Frequency; Microstrip filters; Microstrip resonators; Microwave filters; Microwave theory and techniques; Resonator filters; bandpass filters; filter synthesis; open loop resonators; transmission zeros;
Conference_Titel :
Microwave Conference, 2007. APMC 2007. Asia-Pacific
Conference_Location :
Bangkok
Print_ISBN :
978-1-4244-0748-4
Electronic_ISBN :
978-1-4244-0749-1
DOI :
10.1109/APMC.2007.4554772
