发明名称 Power amplifier with wide band AM-AM feedback and digital pre-distortion
摘要 A system including an amplifier circuit configured to amplify an input and generate an output, a bias circuit configured to bias the amplifier circuit, and a feedback circuit configured to generate feedback based on the input and the output, and to adjust the bias of the amplifier circuit based on the feedback to reduce amplitude nonlinearity in the output. A digital pre-distortion circuit is configured to reduce phase nonlinearity in the output.
申请公布号 US9385666(B2) 申请公布日期 2016.07.05
申请号 US201414558805 申请日期 2014.12.03
申请人 Marvell World Trade LTD. 发明人 Tam Sai-Wang;Wong Alden Chee Ho;Lu Yuan;Signoff David M.;Lin Li
分类号 H03G3/20;H03F1/32;H03F1/02;H03F3/21 主分类号 H03G3/20
代理机构 代理人
主权项 1. A system comprising: an amplifier circuit configured to amplify an input and generate a first output; a bias circuit configured to bias the amplifier circuit; a feedback circuit configured to generate feedback based on the input and the first output, andadjust a bias of the amplifier circuit based on the feedback to reduce amplitude nonlinearity in the first output,wherein the feedback circuit comprises:an operational transconductance amplifier configured to receive the input and the first output and generate a second output; anda transimpedance amplifier configured to receive the second output and generate a third output to adjust the bias of the amplifier circuit; and a digital pre-distortion circuit configured to reduce phase nonlinearity in the first output.
地址 St. Michael BB