Patent ID: 11916707
Assignee: ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An architecture for a class D modulator, comprising:
a digital input line configured to receive a digital input signal, wherein the digital input line is split into a first parallel line and a second parallel line;
a digital-to-analog converter coupled to the first parallel line, the digital-to-analog converter configured to receive the digital input signal and convert the digital input signal to an analog input signal;
an analog summer configured to subtract an analog feedback signal from the analog input signal and generate an analog summer output;
a loop filter configured to receive the analog summer output and produce a filtered analog output;
a quantizer configured to quantize the filtered analog output and output a quantized signal;
a filter module coupled to the second parallel line configured to digitally filter the digital input signal generating a filtered digital input signal, wherein the filtered digital input signal is fed forward; and
a digital summer configured to add the filtered digital input signal to the quantized signal generating a digital modulator output signal.