Analog-to-digital converter for radar sensing
AssigneeQorvo US, Inc.
InventorMichael McLaughlin
Life of this patent
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Abstract
A sensing radar includes a transmitter configured to transmit bursts of pulses, a receiver configured to receive a signal comprising an echo from the bursts of pulses and a leakage of the bursts of pulses from the transmitter to the receiver; an analog-to-digital converter (ADC) coupled to the receiver, and a processor coupled to the ADC. At least one of thresholds of the ADC is configured such that the ADC has a chance of at least 5% to be tripped by thermal noise at an input of the ADC regardless of an amplitude of the signal. The processor is configured to process an output of the ADC at intervals of the bursts of pulses and ignore durations of transmitting the bursts of pulses to retrieve the echo from the signal.
Claims20
A sensing radar, comprising:
- a transmitter configured to transmit bursts of pulses;
- a receiver configured to receive a signal comprising an echo from the bursts of pulses and a leakage of the bursts of pulses from the transmitter to the receiver;
- an analog-to-digital converter (ADC) coupled to the receiver, wherein at least one of thresholds of the ADC is configured such that the ADC has a chance of at least 5% to be tripped by thermal noise at an input of the ADC regardless of an amplitude of the signal;
- and
- a processor coupled to the ADC, wherein the processor is configured to process an output of the ADC at intervals of the bursts of pulses and ignore durations of transmitting the bursts of pulses to retrieve the echo from the signal.
A biometric sensing radar, comprising:
- a transmitter configured to transmit bursts of pulses;
- a receiver configured to receive a signal comprising an echo from the bursts of pulses and a leakage of the bursts of pulses from the transmitter to the receiver;
- an analog-to-digital converter (ADC) coupled to the receiver, wherein the ADC is operable to work in an on-tread threshold setting;
- and
- a processor coupled to the ADC,
- wherein the processor is configured to process an output of the ADC at intervals of the bursts of pulses and ignore durations of transmitting the bursts of pulses to retrieve the echo from the signal, and wherein the processing of the output of the ADC includes a filtering process to filter out quantization of thermal noise.
A biometric sensing radar, comprising:
- a transmitter configured to transmit bursts of pulses;
- a receiver configured to receive a signal comprising an echo from the bursts of pulses and a leakage of the bursts of pulses from the transmitter to the receiver;
- an analog-to-digital converter (ADC) coupled to the receiver;
- and
- a processor coupled to the ADC,
- wherein the processor is configured to:
- set the ADC to work in a first threshold setting;
- detect characteristics of the signal from output of the ADC;
- set the ADC to work in a second threshold setting different from the first threshold setting, wherein the processor is configured to process an output of the ADC at intervals of the bursts of pulses and ignore durations of transmitting the bursts of pulses to retrieve the echo from the signal, and wherein the processing of the output of the ADC includes a filtering process to filter out quantization of thermal noise;
- and
- retrieve the echo from the signal.
Dependencies are inferred from the claim text.