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US 2023/0299751 A1Published application
Interpolation filter device, system and method
AssigneeSTMicroelectronics International N.V.
InventorsAnkur BAL, Gaurav AGGARWAL
Life of this patent
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Abstract
A method generates a delayed signal based on an input signal, and applies vector magnitude scaling to the delayed signal, generating one or more vector magnitude scaled signals. The input signal is added to the one or more vector magnitude scaled signals, generating one or more phase-shifted signals. Compensation scaling is applied to the one or more phase-shifted signals, generating one or more compensated signals. The input signal and the one or more compensated signals are combined, generating an interpolated output signal. The method may be implemented by a device or a system.
Claims20
A device, comprising:
- an input, which, in operation, receives an input signal;
- a phase delay element coupled to the input, wherein the phase delay element, in operation, generates a delayed signal based on the input signal;
- vector magnitude scaling circuitry coupled to the phase delay element, wherein the vector magnitude scaling circuitry, in operation, applies vector magnitude scaling to the delayed signal, generating one or more vector magnitude scaled signals;
- adding circuitry coupled to the input and to the vector magnitude scaling circuitry, wherein the adding circuitry, in operation, adds the input signal to the one or more vector magnitude scaled signals, generating one or more phase-shifted signals;
- magnitude compensation scaling circuitry coupled to the adding circuitry, wherein the magnitude compensation circuitry, in operation, applies compensation scaling to the one or more phase-shifted signals, generating one or more compensated signals;
- and
- multiplexing circuitry coupled to the input and to the magnitude compensation circuitry, wherein the multiplexing circuitry, in operation, combines the input signal and the one or more compensated signals, generating an interpolated output signal.
4 more elements
-23. (canceled)
A device, comprising:
- an input, which in operation receives an input signal;
- a delay element coupled to the input, which, in operation, generates a delayed signal based on the input signal;
- an adder, coupled to the input and to the delay element, wherein the adder, in operation, adds the delayed signal and the input signal, generating a combined signal;
- a finite impulse response filter coupled to the adder, wherein the finite impulse response filter, in operation, generates a phase-shifted and scaled signal based on the combined signal;
- and
- multiplexing circuitry coupled to the input and the finite impulse response filter, wherein the multiplexing circuitry, in operation, time multiplexes the input signal and the phase-shifted and scaled signal, generating an interpolated output signal.
3 more elements
A device, comprising:
- an input, which in operation receives an input signal;
- a delay element coupled to the input, which, in operation, generates a delayed signal based on the input signal;
- one or more finite impulse response filters coupled to the delay element, wherein the finite impulse response filters, in operation, generate respective phase-shifted and scaled signals based on the delayed signal and respective filter coefficients;
- and
- signal combining circuitry coupled to the input and the finite impulse response filter, wherein the signal combining circuitry, in operation, combines the input signal and the phase-shifted and scaled signals, generating a fractional interpolation output signal.
2 more elements
A device, comprising:
- an input, which, in operation, receives an input signal;
- a phase delay element coupled to the input, wherein the phase delay element, in operation, generates a delayed signal based on the input signal;
- phase-shifting circuitry coupled to the input and to the delay element, wherein the phase-shifting circuitry, in operation, generates one or more phase-shifted signals based on the input signal and the delayed signal;
- magnitude compensation scaling circuitry coupled to the phase-shifting circuitry, wherein the magnitude compensation circuitry, in operation, applies compensation scaling to the one or more phase-shifted signals;
- and
- signal combining circuitry coupled to the input and to the magnitude compensation circuitry, wherein the signal combining circuitry, in operation, combines the input signal and the one or more compensated signals, generating an interpolated output signal.
3 more elements
A device, comprising:
- an input, which, in operation, receives an input signal;
- interpolation circuitry, coupled to the input, wherein the interpolation circuitry, in operation:
- generates a delayed signal based on the input signal;
- generates one or more phase-shifted signals based on the delayed signal and the input signal;
- applies magnitude compensation scaling to the one or more phase-shifted signals, generating corresponding magnitude compensated signals;
- and
- combines the input signal with the one or more magnitude compensated signals, generating an interpolated signal.
4 more elements
Dependencies are inferred from the claim text.