Microstrip phase shifter
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United States of America Patent
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Sep 16, 2003
Grant Date -
Feb 7, 2002
app pub date -
May 2, 2001
filing date -
May 2, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A phase shifter includes a substrate, a first electrode positioned on a surface of the substrate, a tunable dielectric layer positioned on a surface of the electrode, a microstrip positioned on a surface of the tunable dielectric layer opposite the substrate, an input for coupling a radio frequency signal to the microstrip, an output for receiving the radio frequency signal from the microstrip, and a connection for applying a control voltage to the electrode. In an alternative embodiment, a second electrode can be positioned on the surface of the substrate and separated from the first electrode to form a gap positioned under the microstrip.
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