Title :
A bandpass filter with cross-coupled L-shape folded resonators for compact size and spurious suppression
Author :
Akkaraekthalin, Prayoot ; Hongdamnuen, Suthat ; Vivek, Vech
Author_Institution :
King Mongkut´´s Inst. of Technol. North Bangkok, Bangkok
Abstract :
This paper proposes a new microstrip resonator consisting of L-shape folded stepped-impedance line sections. The resonator has been applied for designing a four-pole cross-coupled bandpass filter. The full-wave simulator IE3D has been used to design and optimize the proposed L-shape folded stepped-impedance resonator and the four-pole cross-coupled bandpass filter. It has been found that the designed filter has a compact size and a low spurious response. Moreover, using the L-shape resonator, transmission zero levels of the frequency response can be adjusted. Experiments have been carried out and it has been found that the results are in good agreement with simulated expectations.
Keywords :
band-pass filters; circuit optimisation; circuit simulation; coupled circuits; electric impedance; frequency response; microstrip filters; microstrip resonators; microwave filters; network synthesis; cross-coupled L-shape folded resonators; four-pole cross-coupled bandpass filter design; frequency response; full-wave simulator IE3D; microstrip bandpass filter; microstrip resonator; spurious suppression; stepped-impedance line sections; transmission zero levels; Band pass filters; Electromagnetic coupling; Impedance; Magnetic resonance; Magnetic separation; Microstrip filters; Microstrip resonators; Microwave technology; Resonant frequency; Resonator filters; L-shape resonators; Microstrip bandpass filter; compact size; spurious response suppression.;
Conference_Titel :
Microwave Conference, 2006. APMC 2006. Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-4-902339-08-6
Electronic_ISBN :
978-4-902339-11-6
DOI :
10.1109/APMC.2006.4429613
