US 2025/0044409 A1Published application

Signal processing method, corresponding circuit, device, radar system and vehicle

AssigneeSTMicroelectronics International N.V.

InventorsGiuseppe PAPOTTO, Alessandro PARISI, Giuseppe PALMISANO

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Abstract

First signal processing is applied to a first input signal oscillating at an input frequency and a first set of control signals to generate a first output signal oscillating at a multiple of the input frequency with an amplitude controlled by a control signal in the first set of control signals. Second signal processing is applied to a second input signal oscillating in quadrature at the input frequency and a second set of control signals to generate a second output signal that oscillates at the multiple of the input frequency with an amplitude controlled by a control signal in the second set of control signals. A further output signal, generated in response to the first and second output signals, oscillates at the multiple of the input frequency with a phase shift controlled by a ratio of control signal amplitudes for the first and second sets of control signals.

Claims19

Dependent claims

A method, comprising:

receiving a first input signal oscillating at an input frequency;
receiving a first set of control signals;
receiving a second input signal oscillating at the input frequency and in quadrature with the first input signal;
receiving a second set of control signals;
applying first signal processing to the first input signal and control signals in the first set of control signals to provide a first output signal oscillating at a first output frequency based on the input frequency and having an output signal amplitude based on an amplitude of at least one first control signal in the first set of control signals;
applying second signal processing to the second input signal and control signals in the second set control signals to provide a second output signal oscillating at a second output frequency equal to the first output frequency and having an output signal amplitude based on the amplitude of at least one second control signal in the second set of control signals;
generating, based on the first output signal and the second output signal, a further output signal oscillating at an output signal frequency equal to the first output frequency and having a phase shift controlled by a ratio of signal amplitudes of at least one control signal in said first set of control signals and at least one control signal in said second set of control signals.

4 more elements

A circuit, comprising:

a first set of input nodes configured to receive a first input signal oscillating at an input frequency;
a first set of control nodes configured to receive a first set of control signals;
a second set of input nodes configured to receive a second input signal oscillating at the input frequency and in quadrature with the first input signal;
a second set of control nodes configured to receive a second set of control signals;
and
signal processing circuitry coupled to the first set of input nodes, to the first set of control nodes, to the second set of input nodes and to the second set of control nodes;
wherein the signal processing circuitry is configured to provide a further output signal, the further output signal oscillating at an output signal frequency and having a phase shift based on a ratio of signal amplitudes of at least one first control signal in said first set of control signals and at least one second control signal in said second set of control signals.

4 more elements

Dependencies are inferred from the claim text.