Title :
Synthesis of ultra-wideband bandpass filter prototype with multi-stage SIRs and short-circuited stubs loaded at ports
Author :
Chen, Chun-Ping ; Nihei, Hiroshige ; Ma, Zhewang ; Anada, Tetsuo ; Xu, Deming
Author_Institution :
Dept. of Electron. & Inf. Eng., Kanagawa Univ., Yokohama
Abstract :
A new filter prototype consisting of multistage one-wavelength stepped-impedance resonators (SIRs) and two short-circuited stubs located at both ends was proposed based on the synthesis theory to achieve an ultra-wideband passband filter. With this prototype, a ultra-wideband bandpass (UWB) filter with the fractional bandwidth of 110% was synthesized to meet FCC´s (Federal Communications Commission) outdoor frequency mask. The measured frequency responses agree with the predicted ones, which validates the correctness of the presented synthesis technique.
Keywords :
band-pass filters; frequency response; microwave filters; prototypes; resonator filters; ultra wideband technology; fractional bandwidth; frequency response; multistage one-wavelength stepped-impedance resonators; short-circuited stubs; synthesis theory; ultrawideband bandpass filter prototype; Band pass filters; Bandwidth; FCC; Filtering theory; Frequency measurement; Frequency synthesizers; Passband; Prototypes; Resonator filters; Ultra wideband technology;
Conference_Titel :
Microwave Conference, 2008. APMC 2008. Asia-Pacific
Conference_Location :
Macau
Print_ISBN :
978-1-4244-2641-6
Electronic_ISBN :
978-1-4244-2642-3
DOI :
10.1109/APMC.2008.4958427
