A new design of a tunable WLAN-band pass filter using a combination of varactor device, RF-choke and Hairpin-defected ground structure

Author

Boutejdar, A. ; Omar, A. ; Senst, M. ; Burte, E.P. ; Batmanov, A. ; Mikuta, R.

Author_Institution

Dept. of Microwave & Commun. Eng., Univ. of Magdeburg, Magdeburg, Germany

fYear

2011

fDate

10-11 Oct. 2011

Firstpage

506

Lastpage

509

Abstract

A novel compact electrical tunable microstrip band pass filter, realized by coupling two Hairpin-DGS resonators, is proposed. The tunability is achieved by embedding varactor diodes to the Hairpin-DGS resonators. The measured relative tuning range of the band pass filter is 23.5% with a fractional bandwidth of 8%. The measured insertion loss is 3.6 dB to 2.1 dB within the tuning range. The simulated and measured results show good agreement and validate the proposed approach.

Keywords

band-pass filters; defected ground structures; microstrip filters; resonator filters; varactors; wireless LAN; DGS resonators; Hairpin-defected ground structure; RF-choke; compact electrical microstrip filter; loss 3.6 dB to 2.1 dB; relative tuning range; tunable WLAN-band pass filter; varactor device; varactor diodes; Band pass filters; Capacitance; Metals; Microstrip filters; Microwave filters; Resonant frequency; Varactors; RF choke; hairpin-DGS; tunable BPF; varactors;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Integrated Circuits Conference (EuMIC), 2011 European

Conference_Location

Manchester

Print_ISBN

978-1-61284-236-3

Type

conf

Filename

6102925