Title :
A Novel Dual-Mode Square Loop Passband Filter with Second Spurious Passband Suppression
Author :
Hu, WeiLiang ; Yoshimasu, Toshihiko ; Liu, Haiwen
Author_Institution :
Graduate Sch. of Inf. Production & Syst., Waseda Univ., Fukuoka
Abstract :
A novel microstrip dual-mode square loop bandpass filter with suppressed spurious passband is proposed. The degenerate modes are splitted by the embedded spur-lines easily. The spur-lines embedded in the output line suppress the second spurious passband effectively. The two-pole dual-mode filter operating at 2.59 GHz with fractional bandwidth of 4.63% is designed, fabricated, and measured. The measured harmonic suppression ratio >20 dB is obtained
Keywords :
UHF filters; band-pass filters; harmonics suppression; microstrip filters; 2.59 GHz; embedded spur-lines; harmonic suppression ratio; microstrip filter; spurious passband suppression; square loop passband filter; two-pole dual-mode filter; Band pass filters; Frequency response; Information filtering; Information filters; Microstrip filters; Microwave filters; Passband; Resonance; Resonant frequency; Resonator filters;
Conference_Titel :
Communications, Circuits and Systems Proceedings, 2006 International Conference on
Conference_Location :
Guilin
Print_ISBN :
0-7803-9584-0
Electronic_ISBN :
0-7803-9585-9
DOI :
10.1109/ICCCAS.2006.285131
