Center frequency and bandwidth tunable compact SIR bandpass filter

Author

Mekadmini, Ali ; Martin, Nicolas ; Laurent, Philippe ; Tanne, Gerard

Author_Institution

Univ. Eur. de Bretagne, Rennes, France

fYear

2013

fDate

6-10 Oct. 2013

Firstpage

1019

Lastpage

1022

Abstract

This article describes a tunable SIR (Stepped-Impedance Resonator) filter using varactor diodes with tuning range from 2.2 GHz to 3.2 GHz. An analytical and progressive approach has been adopted. The simple addition of line sections at the end of the resonators of the reference structure validated the principle of the center frequency and bandwidth tuning. The use of varactor diodes as tuning elements allows continuous and independent control of these parameters. A bandwidth tunable filter, which is being manufactured, was simulated and the simulated results showed that the -3 dB relative bandwidth varies from 44% to 16% with a fixed center frequency at 2.7 GHz.

Keywords

UHF filters; band-pass filters; microwave filters; resonator filters; varactors; analytical approach; bandwidth tunable compact SIR bandpass filter; center frequency; frequency 2.2 GHz to 3.2 GHz; line sections; progressive approach; reference structure; stepped-impedance resonator filter; tuning elements; varactor diodes; Band-pass filters; Bandwidth; Filtering theory; Microwave filters; Resonant frequency; Resonator filters; Varactors; Bandpass filter (BPF); microstrip filters; stepped impedance resonator (SIR); tunable filter;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference (EuMC), 2013 European

Conference_Location

Nuremberg

Type

conf

Filename

6686833