Title :
A compact ultra-wideband BPF using weakly-coupled SIRs and parallel-coupled lines
Author :
Kamada, Masayoshi ; Yasuzumi, Takenori ; Hashimoto, Osamu ; Uwano, Tomoki
Author_Institution :
Dept. of Electr. Eng. & Electron., Aoyama Gakuin Univ., Sagamihara, Japan
Abstract :
A compact ultra-wideband (UWB) bandpass filter (BPF) with well matched characteristics is proposed in this paper. The BPF consists of weakly-coupled stepped impedance resonators (SIRs) and parallel-coupled lines. Firstly, the performances of the coupled SIRs were examined, and their results show the broad bandpass characteristics with sharp attenuation slope. Next the bandpass performances of the parallel-coupled lines were studied. Then the UWB BPF in the combination of the SIRs and the coupled-lines were designed from the performance simulation. As the results, the filter has the four-ripple peak frequencies in the passband and the attenuation poles at both passband edges.
Keywords :
band-pass filters; electric impedance; resonators; ultra wideband technology; attenuation poles; broad band-pass characteristics; compact ultra-wideband BPF; compact ultra-wideband bandpass filter; four-ripple peak frequencies; parallel-coupled lines design; sharp attenuation slope; weakly-coupled SIR; weakly-coupled stepped impedance resonators; Attenuation; Band pass filters; Couplings; Equivalent circuits; Insertion loss; Integrated circuit modeling; Passband; Bandpass filter (BPF); attenuation pole; parallel-coupled lines; stepped impedance resonators (SIRs); ultra-wideband (UWB);
Conference_Titel :
Microwave Conference Proceedings (APMC), 2011 Asia-Pacific
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4577-2034-5
