Title :
Compact dual-band bandpass filter using concentric stepped impedance resonator
Author :
Pal, Monalisa ; Sarkar, B. ; Sarkar, Pradyut ; Ghatak, Rowdra
Author_Institution :
ECE Dept., NSHM Knowledge Campus Durgapur, Durgapur, India
Abstract :
A dual band bandpass filter for WLAN and WiMAX application is presented in this paper. The proposed filter is realized using concentric U shaped stepped impedance resonator and inward folded open stub resonator. The center frequencies of the pass band are 2.45 GHz and 3.5 GHz. The insertion loss is about 2 dB and 1.5 dB at first and second passband respectively. Two transmission zeros are introduced to improve the selectivity of the filter one is in between two pass band at 2.9 GHz and another is sight of the second passband at 4.4 GHz. The overall dimension of the filter is 14.9 mm by 18.9 mm.
Keywords :
UHF filters; band-pass filters; microwave filters; poles and zeros; resonator filters; wireless LAN; WLAN; WiMAX; compact dual-band bandpass filter; concentric U shaped stepped impedance resonator; concentric stepped impedance resonator; frequency 2.9 GHz; frequency 4.4 GHz; inward folded open stub resonator; pass band filter; transmission zeros; Bandpass filter (BPF); Tri-section stepped impedance resonator (TSSIR) and stub loaded resonator (SLR); dual-band bandpass filter (DB-BPF); stepped impedance resonator (SIR);
Conference_Titel :
Computers and Devices for Communication (CODEC), 2012 5th International Conference on
Conference_Location :
Kolkata
Print_ISBN :
978-1-4673-2619-3
DOI :
10.1109/CODEC.2012.6509289
