Microwave phase shifter including a reflective phase shift stage and a frequency multiplication stage
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United States of America Patent
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Aug 29, 2000
Grant Date -
N/A
app pub date -
Apr 17, 1997
filing date -
Apr 11, 1997
priority date (Note) -
Expired
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Abstract
A phase shifter/modulator which provides linear phase control of a microwave continuous wave carrier signal. Linear phase shift range in excess of 360 degrees is provided as a result of linear variation in control voltage. A reference signal, at a subharmonic of the output carrier signal frequency, is injected into a highly linear fractional range reflection type phase shifter. This fractional phase modulated signal is input to a field effect transistor (FET) based frequency/phase multiplier. The frequency/phase multiplier translates the subharmonic reference signal to the desired output carrier frequency with the full 360 degree phase shift range imposed on the output carrier signal.
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