Title :
Compact dual-band BPF with improved stopband
Author :
Zetao He ; Yu Shi ; Xubo Wei
Author_Institution :
State Key Lab. of Electron. Thin Films & Integrated Devices, Univ. of Electron. Sci. & Technol. of China(UESTC), Chengdu, China
Abstract :
A compact dual-band bandpass filter (BPF) with improved stopband characteristics using stepped impedance resonators (SIRs) is presented. Multiple transmission zeros can be realized near the passbands of proposed filter by the cancelling effects of mixed electric and magnetic couplings. Dualband can be achieved by combining two sets of independent resonators with common input/output ports. A 2.4/5.4GHz dualband BPF for wireless local area network (WLAN) has been designed and fabricated to verify the validity of the proposed method. The measurement results show six finite transmission zeros in the stopband for improved stopband.
Keywords :
UHF filters; UHF resonators; band-pass filters; band-stop filters; electromagnetic coupling; resonator filters; SIRs; WLAN; compact dual-band BPF; compact dual-band bandpass filter; finite transmission zeros; frequency 2.4 GHz; frequency 5.4 GHz; improved stopband characteristics; input-output ports; mixed electric-magnetic coupling cancelling effects; multiple transmission zeros; stepped impedance resonators; wireless local area network; Band-pass filters; Couplings; Dual band; Filtering theory; Magnetic separation; Passband; Resonator filters; SIR; dual-band filter; transmission zeros;
Conference_Titel :
Electronic Packaging Technology (ICEPT), 2014 15th International Conference on
Conference_Location :
Chengdu
DOI :
10.1109/ICEPT.2014.6922917
