公开(公告)号：US09240770B2

公开(公告)日：2016-01-19

申请号：US14212831

申请日：2014-03-14

Applicant: RF Micro Devices, Inc.

Inventor： Daniel Charles Kerr ,  Eric K. Bolton ,  Robert Andrew Phelps

IPC: H03K17/687 ,  H03H11/12 ,  H03K17/693 ,  H01P1/15 ,  H03K17/10

CPC classification number: H03H11/1213 ,  H01P1/15 ,  H03K17/102 ,  H03K17/687 ,  H03K17/693

Abstract: Disclosed is a harmonic cancellation circuit for an RF switch branch having a first transistor with a first gate terminal and a first body terminal, a second transistor having a second gate terminal coupled to the first body terminal, and having a second body terminal coupled to the first gate terminal. Also included is a first resistor coupled between a first coupling node and the second body terminal, and a second resistor coupled between a second coupling node and the first body terminal, wherein the first transistor and second transistor are adapted to generate an inverse phase third harmonic signal relative to a third harmonic signal generated by the RF switch branch, such that the inverse phase third harmonic signal is output through the first resistor and the second resistor to the RF switch branch to reduce the third harmonic signal.

Abstract translation: 公开了一种用于RF开关分支的谐波消除电路，具有具有第一栅极端子和第一主体端子的第一晶体管，第二晶体管具有耦合到第一主体端子的第二栅极端子，并且具有耦合到第一主体端子的第二主体端子 第一门终端。 还包括耦合在第一耦合节点和第二主体端子之间的第一电阻器和耦合在第二耦合节点和第一主体端子之间的第二电阻器，其中第一晶体管和第二晶体管适于产生反相三次谐波 信号相对于由RF开关分支产生的三次谐波信号，使得反相三次谐波信号通过第一电阻器和第二电阻器输出到RF开关分支以减少三次谐波信号。

公开(公告)号：US20140266415A1

公开(公告)日：2014-09-18

申请号：US14212831

申请日：2014-03-14

Applicant: RF Micro Devices, Inc.

Inventor： Daniel Charles Kerr ,  Eric K. Bolton ,  Robert Andrew Phelps

IPC: H03H11/04

CPC classification number: H03H11/1213 ,  H01P1/15 ,  H03K17/102 ,  H03K17/687 ,  H03K17/693

Abstract: Disclosed is a harmonic cancellation circuit for an RF switch branch having a first transistor with a first gate terminal and a first body terminal, a second transistor having a second gate terminal coupled to the first body terminal, and having a second body terminal coupled to the first gate terminal. Also included is a first resistor coupled between a first coupling node and the second body terminal, and a second resistor coupled between a second coupling node and the first body terminal, wherein the first transistor and second transistor are adapted to generate an inverse phase third harmonic signal relative to a third harmonic signal generated by the RF switch branch, such that the inverse phase third harmonic signal is output through the first resistor and the second resistor to the RF switch branch to reduce the third harmonic signal.

Abstract translation: 公开了一种用于RF开关分支的谐波消除电路，具有具有第一栅极端子和第一主体端子的第一晶体管，第二晶体管具有耦合到第一主体端子的第二栅极端子，并且具有耦合到第一主体端子的第二主体端子 第一门终端。 还包括耦合在第一耦合节点和第二主体端子之间的第一电阻器和耦合在第二耦合节点和第一主体端子之间的第二电阻器，其中第一晶体管和第二晶体管适于产生反相三次谐波 信号相对于由RF开关分支产生的三次谐波信号，使得反相三次谐波信号通过第一电阻器和第二电阻器输出到RF开关分支以减少三次谐波信号。