公开(公告)号：US08618882B2

公开(公告)日：2013-12-31

申请号：US13730502

申请日：2012-12-28

Applicant: Texas Instruments Incorporated

Inventor： Brett Forejt ,  Jeff Berwick ,  David J. Baldwin

IPC: H03F3/45

CPC classification number: H03F3/45654 ,  H03F3/45179 ,  H03F2203/45528 ,  H03F2203/45562 ,  H03F2203/45594 ,  H03G1/0029 ,  H03G1/007

Abstract: An apparatus and method are provided. Generally, an input signal is applied across a main path (through an input network) and across a cancellation path (through a cancellation circuit). The cancellation circuit subtracts a cancellation current from the main path as part of the control mechanism, where the magnitude of the cancellation current is based on a gain control signal (that has been linearized to follow a control voltage).

公开(公告)号：US20130113566A1

公开(公告)日：2013-05-09

申请号：US13730502

申请日：2012-12-28

Applicant: Texas Instruments Incorporated

Inventor： Brett Forejt ,  Jeff Berwick ,  David J. Baldwin

IPC: H03F3/45

CPC classification number: H03F3/45654 ,  H03F3/45179 ,  H03F2203/45528 ,  H03F2203/45562 ,  H03F2203/45594 ,  H03G1/0029 ,  H03G1/007

Abstract: An apparatus and method are provided. Generally, an input signal is applied across a main path (through an input network) and across a cancellation path (through a cancellation circuit). The cancellation circuit subtracts a cancellation current from the main path as part of the control mechanism, where the magnitude of the cancellation current is based on a gain control signal (that has been linearized to follow a control voltage).

Abstract translation: 提供了一种装置和方法。 通常，输入信号跨越主路径（通过输入网络）并跨越抵消路径（通过消除电路）施加。 消除电路从主路径减去作为控制机构的一部分的消除电流，其中消除电流的大小基于增益控制信号（已被线性化以跟随控制电压）。