Back to results
US 4,749,964 AGranted
Superregenerative detector having a saw device in the feedback circuit
AssigneeR. F. Monolithics, Inc.
InventorDarrell L. Ash
Life of this patent
Estimating the term…
Abstract
A superregenerative detector utilizing a single transistor and having a surface acoustic wave device in the feed back loop coupling the output to the input to cause oscillation wherein the surface acoustic wave device is a low loss delay line formed as a single phase unidirectional transducer on a quartz substrate.
Claims12
A superregenerative detector comprising:
- a. an RF oscillator having an output and an input,
- b. a surface acoustic wave device forming a feedback loop for coupling said output to said input to cause said RF oscillations to occur, and
- c. a quench oscillator coupled to said RF oscillator for switching said RF oscillator between an oscillating and a non-oscillating condition.
A method of constructing a superregenerative detector comprising the steps of:
- a. forming an RF oscillator having an output and an input,
- b. coupling said output to said input with a surface acoustic wave device forming a feedback loop to cause said RF oscillations, and
- c. coupling a quench oscillator to said RF oscillator for switching said RF oscillator between an oscillating and a non-oscillating condition.
Dependencies are inferred from the claim text.