Title :
New Technique for Suppressing Spurious Responses of Planar Bandpass Filters Using λ/2 Resonators
Author :
Wada, Kouj I. ; Nakagawa, Kouichi ; Hashimoto, Osamu
Author_Institution :
College of Science and Engineering, Aoyama Gakuin University, 6-16-1 Chitosedai, Setagaya-ku, Tokyo 157-8572, Japan. Tel. & Fax.: +81-3-5384-1121. E-mail: wada@ee.aoyama.ac.jp
Abstract :
A method for suppressing spurious responses of planar bandpass filters (BPFs) using λ/2 resonators is proposed. We show that the spurious responses of the BPF can be suppressed by using the the resonator with the tap-connection technique and refer to the application examples of BPFs and coupled-line BPFs are provided. It has been confirmed that the resonator depending on the excitation method is useful for suppressing spurious responses of the planar BPF.
Keywords :
Band pass filters; Circuits; Educational institutions; Electronic mail; Impedance; Microwave filters; Microwave theory and techniques; Q factor; Resonant frequency; Resonator filters;
Conference_Titel :
Microwave Conference, 2002. 32nd European
Conference_Location :
Milan, Italy
DOI :
10.1109/EUMA.2002.339347
