公开(公告)号：US20150016567A1

公开(公告)日：2015-01-15

申请号：US13940263

申请日：2013-07-12

Applicant: ANALOG DEVICES TECHNOLOGY

Inventor： Dong Chen

IPC: H04B1/04

CPC classification number: H04B1/0475 ,  H03F1/3247 ,  H03F1/3258 ,  H03F1/3282 ,  H03F3/195 ,  H03F3/245 ,  H03F2200/111 ,  H03F2201/3206 ,  H03F2201/3209 ,  H03F2201/3212 ,  H03F2201/3224 ,  H03F2201/3233 ,  H04B2001/0425

Abstract: Various digital pre-distortion systems for use in transmitters are disclosed. The digital pre-distortion system comprises an observing path, which performs either undersampling or radio frequency sampling of the output of a power amplifier. Undersampling may be performed at a rate, which causes aliasing to occur in the undersampled frequency domain. Both undersampling and radio frequency sampling reduces the complexity of the digital pre-distortion system by removing any down mixing modules or anti-aliasing modules, while maintaining reasonable performance of the digital pre-distortion systems.

Abstract translation: 公开了用于发射机的各种数字预失真系统。 数字预失真系统包括观测路径，其执行功率放大器的输出的欠采样或射频采样。 可以以使得在欠采样频域中出现混叠的速率来执行不抽样。 欠采样和射频采样都可以通过去除任何下混频模块或抗混叠模块来降低数字预失真系统的复杂性，同时保持数字预失真系统的合理性能。

公开(公告)号：US09608676B2

公开(公告)日：2017-03-28

申请号：US13940263

申请日：2013-07-12

Applicant: ANALOG DEVICES TECHNOLOGY

Inventor： Dong Chen

IPC: H04B1/04 ,  H03F1/32 ,  H03F3/195 ,  H03F3/24

CPC classification number: H04B1/0475 ,  H03F1/3247 ,  H03F1/3258 ,  H03F1/3282 ,  H03F3/195 ,  H03F3/245 ,  H03F2200/111 ,  H03F2201/3206 ,  H03F2201/3209 ,  H03F2201/3212 ,  H03F2201/3224 ,  H03F2201/3233 ,  H04B2001/0425

Abstract: Various digital pre-distortion systems for use in transmitters are disclosed. The digital pre-distortion system comprises an observing path, which performs either undersampling or radio frequency sampling of the output of a power amplifier. Undersampling may be performed at a rate, which causes aliasing to occur in the undersampled frequency domain. Both undersampling and radio frequency sampling reduces the complexity of the digital pre-distortion system by removing any down mixing modules or anti-aliasing modules, while maintaining reasonable performance of the digital pre-distortion systems.