公开(公告)号：US20240322772A1

公开(公告)日：2024-09-26

申请号：US18694227

申请日：2022-03-19

Applicant: SANECHIPS TECHNOLOGY CO.,LTD

Inventor： Yi LIU ,  Yong WANG

IPC: H03F3/45 ,  H03G3/30 ,  H04B1/04

CPC classification number: H03F3/45076 ,  H03G3/3036 ,  H03F2200/451 ,  H03G2201/103 ,  H03G2201/307 ,  H04B1/04 ,  H04B2001/045

Abstract: Provided are a low-phase-shift variable-gain amplifier and a method for processing a radio frequency signal. The low-phase-shift variable-gain amplifier comprises: a differential cascode amplification circuit, which comprises a common-source transistor and a common-gate transistor, wherein a gate stage of the common-source transistor is connected to a first bias voltage via a target resistor, and a gate stage of the common-gate transistor is connected to a second bias voltage; a current-steering structure, wherein one end of the current-steering structure is connected between the common-source transistor and the common-gate transistor, a third current signal outputted by the current-steering structure is used to adjust a gain of the differential cascode amplification circuit; and a phase compensation circuit, wherein one end of the phase compensation circuit is connected between the common-source transistor and the common-gate transistor.