US 11,799,424 B2 · Phase demodulator with negative feedback loop

Abstract

Disclosed is a phase demodulator, which includes a transmitter that outputs a reference signal to a target, a receiver that receives a target signal generated in response to the reference signal from the target, and a demodulation processor that demodulates the target signal, and the demodulation processor includes a phase controller that outputs a first phase signal based on the reference signal, a phase shifter that delays a phase of the first phase signal to output a first delayed signal, a mixer that outputs a first mixing signal based on the target signal and the first delay signal, and an amplifier that outputs a first feedback signal generated by amplifying the first mixing signal to the phase controller.

Claims13

Dependent claims

A system comprising a phase demodulator, the system comprising:

a transmitter configured to output a reference signal to a target;
a receiver configured to receive a target signal generated in response to the reference signal from the target;
and
a demodulation processor configured to demodulate the target signal,
wherein the demodulation processor includes:
a phase controller configured to output a phase signal based on the reference signal and to control a phase of the phase signal based on a magnitude a feedback signal and a phase threshold value;
a phase shifter configured to delay a phase of the phase signal to output a delay signal;
a mixer configured to output a mixing signal based on the target signal and the delay signal;
and
an amplifier configured to produce the feedback signal by amplifying the mixing signal.

7 more elements

Dependencies are inferred from the claim text.

Phase demodulator with negative feedback loop

Life of this patent

Phase demodulator with negative feedback loop

Life of this patent

Abstract

Claims13