公开(公告)号：US20190158069A1

公开(公告)日：2019-05-23

申请号：US16259689

申请日：2019-01-28

Applicant: STMicroelectronics SA

Inventor： Bruno GRELAUD ,  Sebastien PRUVOST

IPC: H03H11/28 ,  H04B1/04 ,  H04B3/26 ,  H03H11/24 ,  H04L25/02 ,  H04L25/12 ,  H03H7/25 ,  H01Q1/50 ,  H03H11/32 ,  H03H11/30 ,  H03H7/40 ,  H04B1/18

Abstract: An attenuator having an impedance that is controllable by a first setpoint signal is coupled to a transmission line. A matching circuit having an impedance that is controllable by a second setpoint signal is also coupled to the transmission line. A transformer circuit block also coupled to the transmission line has a complex impedance. A control circuit sets the first and second setpoint signals so as to control a conjugate impedance relationship between the variable impedances presented by the attenuator and matching circuit relative to the complex impedance of the transformer circuit.

公开(公告)号：US20180302063A1

公开(公告)日：2018-10-18

申请号：US15952804

申请日：2018-04-13

Applicant: STMicroelectronics SA

Inventor： Bruno GRELAUD ,  Sebastien PRUVOST

IPC: H03H11/28 ,  H03H11/32 ,  H03H11/24 ,  H01Q1/50 ,  H04L25/02 ,  H04L25/12 ,  H04B3/26 ,  H04B1/04 ,  H04B1/18

CPC classification number: H03H11/28 ,  H01Q1/50 ,  H03H7/25 ,  H03H7/40 ,  H03H11/245 ,  H03H11/30 ,  H03H11/32 ,  H04B1/0458 ,  H04B1/18 ,  H04B3/26 ,  H04L25/0278 ,  H04L25/12

Abstract: An attenuator having an impedance that is controllable by a first setpoint signal is coupled to a transmission line. A matching circuit having an impedance that is controllable by a second setpoint signal is also coupled to the transmission line. A transformer circuit block also coupled to the transmission line has a complex impedance. A control circuit sets the first and second setpoint signals so as to control a conjugate impedance relationship between the variable impedances presented by the attenuator and matching circuit relative to the complex impedance of the transformer circuit.