US 2026/0074725 A1 · Method and Device for Converting an Analog Input Signal into a Digital Output Signal

Abstract

Method and device for converting an analog input signal into a digital output signal, wherein the analog input signal is supplied to be converted to the input side of an amplitude modulator with carrier suppression to obtain a carrierless amplitude-modulated signal, an adder adds a sinusoidal carrier signal offset by 90° to the amplitude-modulated signal output by the amplitude modulator to obtain a phase-modulated signal, the phase-modulated signal is supplied to a limiter that is used to suppress interference amplitude modulation in the phase-modulated signal, and the signal output by the limiter is supplied to a demodulator and sampled therein with at least one sampling clock signal, where the phase position of the at least one sampling clock signal is dynamically altered to achieve a higher resolution.

Claims20

Dependent claims

A method for converting an analog input signal into a digital output signal, the method comprising:

supplying the analog input signal to be converted to an input side of an amplitude modulator with carrier suppression to obtain a carrierless amplitude-modulated signal;
adding, via an adder, a sinusoidal carrier signal offset by 90° to the amplitude-modulated signal output by the amplitude modulator to obtain a phase-modulated signal;
supplying the phase-modulated signal to a limiter, said limiter suppressing interference amplitude modulation in the phase-modulated signal;
supplying the signal output by the limiter to a demodulator and sampling said signal therein with at least one sampling clock signal;
and
dynamically altering a phase position of the at least one sampling clock signal in steps of less than 40° to achieve a higher resolution.

3 more elements

A device for converting an analog input signal into a digital output signal, the device comprising:

an amplitude modulator with carrier suppression, an analog input signal to be converted being suppliable to an input side of the amplitude modulator to obtain a carrierless amplitude-modulated signal;
an adder which adds a sinusoidal carrier signal offset by 90° to the carrierless amplitude-modulated signal to obtain a phase-modulated signal;
a limiter which receives the phase-modulated signal and with which interference amplitude modulation in the phase-modulated signal is suppressed;
a demodulator which receives and samples the signal output by the limiter therein with at least one sampling clock signal;
means for phase position alteration which dynamically alter the phase position of the at least one sampling clock signal in steps of less than 40° to achieve a higher resolution.

2 more elements

Dependencies are inferred from the claim text.

Method and Device for Converting an Analog Input Signal into a Digital Output Signal

Life of this patent

Method and Device for Converting an Analog Input Signal into a Digital Output Signal

Life of this patent

Abstract

Claims20