Voltage Controlled SAW Oscillator with Phase Shifter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
Apr 21, 2011
app pub date -
Oct 6, 2010
filing date -
Oct 15, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An oscillator which, in one embodiment, is a voltage controlled surface acoustic wave oscillator including at least a surface acoustic wave filter and a voltage controlled phase shifter. In one embodiment, the phase shifter includes at least one low pass circuit and two high pass circuits coupled in series to improve phase shift versus control voltage linearity. In one embodiment, the low pass circuit includes at least a pair of inductors in series and a variable resistor coupled in parallel therebetween and to ground and the high pass circuit includes at least a pair of variable resistors in series and an inductor coupled in parallel therebetween and to ground.
First Claim
Other Claims data not available