Title :
Aperture compensation technique for innovative design of ultra-broadband microstrip bandpass filter
Author :
Lei Zhu ; Huizheng Bu ; Ke Wu
Author_Institution :
Dept. of Electr. & Comput. Eng., Ecole Polytech., Montreal, Que., Canada
Abstract :
Aperture compensation technique is proposed for the enhancement of coupling strength in the parallel-coupled microstrip line (PCML). Through applying a so-called "short-open calibration" procedure in our full-wave MoM algorithm, this PCML is characterized by an equivalent J-inverter network. A novel bandpass filter with a single resonator is designed through its equivalent circuit topology. Both predicted and measured results show its ultra-broadband and multi-pole bandpass behavior with BW>70% and |S/sub 11/|<-15 dB.
Keywords :
S-parameters; band-pass filters; compensation; equivalent circuits; microstrip filters; microwave filters; passive filters; poles and zeros; resonator filters; aperture compensation technique; coupling strength; equivalent J-inverter network; equivalent circuit topology; full-wave MoM algorithm; microstrip bandpass filter; multi-pole bandpass behavior; parallel-coupled microstrip line; short-open calibration procedure; single resonator; ultra-broadband bandpass filter; Apertures; Band pass filters; Circuit topology; Conductors; Coupling circuits; Equivalent circuits; Message-oriented middleware; Microstrip filters; Resonator filters; Strips;
Conference_Titel :
Microwave Symposium Digest. 2000 IEEE MTT-S International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-5687-X
DOI :
10.1109/MWSYM.2000.860995
