Active varactor tunable bandpass filter

1 March 1993

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Microwave and Guided Wave Letters

Vol. 3 (3) , 70-71
https://doi.org/10.1109/75.205668

Abstract

A microstrip active varactor tunable bandpass filter is presented. The filter is based upon the negative resistance method using a microstrip combline network. A 1.8-GHz, two-pole device with a bandwidth of 2% was constructed. 0.6 octave tuning with significant improvement in passband performance was achieved compared with its passive counterpart.

Keywords

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