Title :
A /spl lambda//2 CPW resonator BPF with multiple attenuation poles and its miniaturization
Author :
Wada, K. ; Awai, I.
Author_Institution :
Fac. of Eng., Yamaguchi Univ., Ube, Japan
Abstract :
Very simple method for creating multiple attenuation poles of a bandpass filter (BPF) based on a /spl lambda//2 coplanar waveguide (CPW) resonator with tap-coupling is proposed, Moreover, miniaturization of the CPW-BPF using a stepped impedance resonator (SIR) is also carried out, As a consequence, the bandpass characteristics with multiple attenuation poles are obtained together with the reduced filter size. The derivation of multiple attenuation poles and a method for reduced filter size are also detailed,.
Keywords :
UHF filters; band-pass filters; coplanar waveguide components; frequency response; microwave filters; passive filters; poles and zeros; resonator filters; waveguide filters; /spl lambda//2 CPW configuration; CPW resonator BPF; bandpass characteristics; bandpass filter; coplanar waveguide resonator; filter size reduction; miniaturization; multiple attenuation poles; stepped impedance resonator; tap-coupling; Attenuation; Band pass filters; Capacitors; Coplanar waveguides; Coupling circuits; Dielectric losses; Dielectric substrates; Impedance; Monolithic integrated circuits; Resonator filters;
Conference_Titel :
Microwave Symposium Digest, 1999 IEEE MTT-S International
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
0-7803-5135-5
DOI :
10.1109/MWSYM.1999.779588
