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Journal Articles Electronics Letters Year : 2005

Design of an ultra compact electronically tunable microwave impedance transformer

Abstract

A novel ultra compact microwave tuneable impedance transformer topology is proposed. It consists of a classical /spl pi/ CLC network where an equivalent tuneable inductance is realised with a high impedance transmission line in series with fixed inductance and a diode's varactors. The realised hybrid prototype at 900 MHz operating frequency is only 0.06λ-long. Impedance loads from 16.5 to 280 Ω can be matched with a return loss better than -20 dB, and the relative bandwidth equals ±36% for a fixed 50 Ω load.

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Electronics
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Dates and versions

hal-01814633 , version 1 (13-06-2018)

Identifiers

Cite

A. Jrad, A.-L. Perrier, R. Bourtoutian, J.-M. Duchamp, Philippe Ferrari. Design of an ultra compact electronically tunable microwave impedance transformer. Electronics Letters, 2005, 41 (12), pp.707-709. ⟨10.1049/el:20050689⟩. ⟨hal-01814633⟩
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