Multi-Layered Dual-Band Bandpass Filter Using Stub-Loaded Stepped-Impedance and Uniform-Impedance Resonators

Author

Wu, Hung-Wei ; Chen, Yu-Fu ; Chen, Yung-Wei

Author_Institution

Dept. of Comput. & Commun., Kun Shan Univ., Tainan, Taiwan

Volume

22

Issue

3

fYear

2012

fDate

3/1/2012 12:00:00 AM

Firstpage

114

Lastpage

116

Abstract

The design of multi-layered dual-band bandpass filter using stub-loaded stepped-impedance and uniform-impedance resonators is proposed. The filter is designed to have dual-passband at 2.4, and 5.2 GHz for Wireless Local Area Network (WLAN). The multi-layered filter consists of the stub-loaded stepped-impedance resonator (SL-SIR) on the top layer and the stub-loaded uniform-impedance resonator (SL-UIR) on the bottom layer, that can provide the multi-path propagation to enhance the filter performance and compact circuit size. The proposed SL-SIR and SL-UIR play important roles for controlling the transmission zeros at each first and second passband edges. The measured results are in good agreement with the full-wave electromagnetic simulation results.

Keywords

band-pass filters; multipath channels; resonator filters; wireless LAN; SL-SIR; SL-UIR; WLAN; compact circuit size; dual-passband; filter performance; frequency 2.4 GHz; frequency 5.2 GHz; full-wave electromagnetic simulation; multilayered dual-band bandpass filter; multilayered filter; multipath propagation; passband edges; stub-loaded stepped-impedance resonator; stub-loaded uniform-impedance resonator; transmission zeros; uniform-impedance resonators; wireless local area network; Couplings; Dual band; Filtering theory; Passband; Resonant frequency; Wireless LAN; Wireless communication; Bandpass filter (BPF); dual-band; multilayer; stub-loaded stepped-impedance resonator (SL SIR); uniform-impedance;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2012.2185784

Filename

6157657