Title :
Planar interdigital-coupled UWB bandpass filter with a notched band
Author :
Kaida Xu ; Yonghong Zhang ; Joines, William T. ; Qing Huo Liu
Author_Institution :
EHF Key Lab. of Fundamental Sci., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
This paper presents a planar compact microstrip interdigital-coupled notch-band ultra-wideband (UWB) bandpass filter (BPF). The proposed five high-impedance interdigital lines are employed to not only realize strong coupling as feed lines, but also create a controllable notched band in the UWB passband. A prototype of the proposed notch-band UWB BPF has been designed and fabricated. The measured results illustrate that the 3 dB fractional bandwidth (FBW) of the filter is 125%, and the insertion loss of the notched band within the UWB passband is 12 dB at 5.8 GHz.
Keywords :
band-pass filters; microstrip filters; microwave filters; notch filters; ultra wideband technology; UWB passband; feed lines; fractional bandwidth; frequency 5.8 GHz; high-impedance interdigital lines; insertion loss; loss 12 dB; notch-band UWB BPF; planar compact microstrip interdigital-coupled notch-band UWB BPF; ultrawideband bandpass filter; Band-pass filters; Couplings; Delays; Insertion loss; Optical ring resonators; Passband; Wireless communication;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE
Conference_Location :
Memphis, TN
Print_ISBN :
978-1-4799-3538-3
DOI :
10.1109/APS.2014.6905173
