2.44/5.25 GHz dual-band pass filter using l/4 stepped-impedance resonators for WLAN applications

Author

Zhang, Tao ; Sun, Liguo

Author_Institution

Dept. of Electron. Eng. & Inf. Sci., Univ. of Sci. & Technol. of China, Hefei, China

fYear

2010

fDate

Nov. 29 2010-Dec. 2 2010

Firstpage

1204

Lastpage

1207

Abstract

A novel dual-band pass filter (DBPF) is accomplished using 1/4 stepped impedance resonators (SIRs) with low insertion loss, covering the frequency range of both 2.40~2.48 GHz and 5.15~5.35 GHz, which are the operating frequencies of IEEE 802.11 a/ g, respectively. Additionally, a new frequency transformation is applied to evolve the general design formulas of DBPF. The derived DBPF topology is then simplified with the aid of J-inverters, in which only J inverters and paralleled LC resonators corresponding to the 1/4 SIRs are involved. Finally, the filter is fabricated easily using distributed elements and the measurement is in a good agreement with the simulation.

Keywords

band-pass filters; microwave filters; resonator filters; telecommunication standards; wireless LAN; IEEE 802.11a; IEEE 802.11g; J-inverters; dual-band pass filter; frequency 2.40 GHz to 2.48 GHz; frequency 5.15 GHz to 5.35 GHz; insertion loss; paralleled LC resonators; stepped impedance resonators; wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas Propagation and EM Theory (ISAPE), 2010 9th International Symposium on

Conference_Location

Guangzhou

Print_ISBN

978-1-4244-6906-2

Type

conf

DOI

10.1109/ISAPE.2010.5696696

Filename

5696696