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A LOW VOLTAGE TUNABLE ANALOG PHASE SHIFTER UTILIZING FERROELECTRIC VARACTORS

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A distributed transmission line phase shifter was implemented by periodically loading a coplanar transmission line using ferroelectric varactors in a shunt configuration. A single dc bias applied to the phase shifter circuit provides a large relative phase shift. A relative phase shift of ∼ 305 degrees was obtained at 20 GHz for a dc bias of only 5 V.
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Keywords: coplanar waveguide transmission line; distributed transmission line phase shifter; ferroelectric varactors; voltage tunable dielectrics

Document Type: Research Article

Affiliations: 1: Department of ECE, University of Dayton, Dayton, OH, USA 2: Air Force Research Laboratory, WPAFB, Dayton, OH, USA 3: University of Dayton Research Institute, Dayton, OH, USA

Publication date: 2008-01-01

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