公开(公告)号：US11239866B2

公开(公告)日：2022-02-01

申请号：US16924274

申请日：2020-07-09

Applicant: Intel Corporation

Inventor： Daniel Gruber ,  Ramon Sanchez ,  Kameran Azadet ,  Martin Clara

IPC: H04B1/00 ,  H04B1/04 ,  H03M1/66 ,  H04B1/10

Abstract: A digital-to-analog conversion system is provided. The digital-to-analog conversion system includes a digital-to-analog converter configured to receive a pre-distorted digital signal from a digital circuit, and to generate an analog signal based on the pre-distorted digital signal. Further, the digital-to-analog conversion system includes a feedback loop for providing a digital feedback signal to the digital circuit. The feedback loop includes an analog-to-digital converter configured to generate the digital feedback signal based on the analog signal, and wherein a sample rate of the analog-to-digital converter is lower than a sample rate of the digital-to-analog converter.

公开(公告)号：US10044367B1

公开(公告)日：2018-08-07

申请号：US15671888

申请日：2017-08-08

Applicant: Intel Corporation

Inventor： Kameran Azadet ,  Ramon Sanchez

IPC: H03M3/00 ,  H03L7/20 ,  H03L7/16 ,  G10L19/03 ,  H03M1/00

Abstract: Techniques for generating signals with arbitrary noise shaping are discussed. One example apparatus configured to be employed within a transmitter can comprise a noise shaper configured to: receive an input signal xq; and apply noise shaping to the input signal xq to generate a noise shaped output signal yq, wherein an in-band noise of the noise shaped output signal yq is below an in-band noise threshold of a spectral mask associated with the noise shaper, wherein an out-of-band noise of the noise shaped output signal yq is below an out-of-band noise threshold of the spectral mask, and wherein a noise of the output signal yq in each of a plurality of bandpass regions is below an associated noise threshold for that bandpass region of the spectral mask.