Title :
A novel dual-mode bandpass filter with wide stopband using the properties of microstrip open-loop resonator
Author_Institution :
Dept. of Electr. & Electron. Eng., Nigde Univ., Turkey
Abstract :
A novel dual-mode microstrip square loop resonator is proposed using the slow-wave and dispersion features of the microstrip slow-wave open-loop resonator. It is shown that the designed and fabricated dual-mode microstrip filter has a wide stopband including the first spurious resonance frequency. Also, it has a size reduction of about 50% at the same center frequency, as compared with the dual-mode bandpass filters such as microstrip patch, cross-slotted patch, square loop, and ring resonator filter.
Keywords :
UHF filters; band-pass filters; microstrip filters; microstrip resonators; resonator filters; slow wave structures; 1.57 GHz; center frequency; dispersion features; dual-mode bandpass filter; dual-mode microstrip square loop resonator; first spurious resonance frequency; microstrip open-loop resonator; microstrip slow-wave open-loop resonator; size reduction; slow-wave features; wide stopband; Arm; Band pass filters; Dispersion; Microstrip filters; Microstrip resonators; Microwave filters; Resonance; Resonant frequency; Resonator filters; Wireless communication;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2002.804560
