Title :
Wideband bandpass filter using symmetric multimode resonator
Author :
Feng, W.J. ; Zhou, Jiagen G. ; Che, W.Q.
Author_Institution :
Dept. of Commun. Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China
Abstract :
A novel wideband bandpass filter using a symmetric multimode resonator is proposed. A wide passband with two transmission zeros near the passband is realised by changing the characteristic impedance of the multimode resonator, and the bandwidth of the five-order passband with even/odd-modes can be adjusted. A planar wideband bandpass filter prototype with 3 dB fractional bandwidth of 62.7% is designed and fabricated.
Keywords :
band-pass filters; resonator filters; characteristic impedance; even-odd-modes; planar wideband bandpass filter; symmetric multimode resonator; transmission zeros;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2012.2087
