Title :
An Ultra-Broadband Coplanar-Waveguide Bandpass Filter With Sharp Skirt Selectivity
Author :
Chen, Nan-Wei ; Fang, Kuo-Zhi
Author_Institution :
Dept. of Electr. Eng., Nat. Central Univ., Jhongli
Abstract :
An ultra-broadband coplanar-waveguide (CPW) bandpass filter (BPF) is demonstrated. The proposed CPW BPF is designed via cascading CPW lowpass and bandpass structures. As compared to the classical CPW BPFs, the ultra broadband is realized relatively easily by separately adjusting the cutoff frequencies of the CPW lowpass and bandpass structures. The cascaded CPW BPF is of greater than 120% 3-dB fractional bandwidth, very sharp skirt selectivity, good stopband rejection, and no repeated passbands
Keywords :
band-pass filters; coplanar waveguides; low-pass filters; waveguide filters; BPF; bandpass filter; bandpass structures; cascaded CPW filter; coplanar waveguide; lowpass structures; sharp skirt selectivity; ultra broadband; Band pass filters; Bandwidth; Circuits; Coplanar waveguides; Cutoff frequency; Microwave filters; Passband; Periodic structures; Permittivity measurement; Wideband; Bandpass filter (BPF); cascaded CPW filter; coplanar-waveguide (CPW);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2006.890337
