公开(公告)号：US20180323821A1

公开(公告)日：2018-11-08

申请号：US15968927

申请日：2018-05-02

Applicant: STMicroelectronics SA

Inventor： Laurent CHABERT ,  Raphael PAULIN

IPC: H04B1/48 ,  H04B1/16 ,  H04B1/18 ,  H03F3/195 ,  H03F1/26

CPC classification number: H04B1/48 ,  H03F1/26 ,  H03F1/523 ,  H03F3/195 ,  H03F3/72 ,  H03F2200/06 ,  H03F2200/114 ,  H03F2200/181 ,  H03F2200/222 ,  H03F2200/231 ,  H03F2200/27 ,  H03F2200/294 ,  H03F2200/321 ,  H03F2200/396 ,  H03F2200/451 ,  H03F2200/489 ,  H03F2200/507 ,  H03F2200/519 ,  H03F2200/525 ,  H03F2200/61 ,  H03F2200/75 ,  H04B1/1615 ,  H04B1/18

Abstract: A communications device includes a transmission chain coupled to an antenna a receiver chain coupled to the antenna. The receiver chain includes an amplifier device having an input coupled to the antenna. A controlled switching circuit is included in the amplifier device and is operable to selectively disconnect conduction terminals of an amplifying transistor from power supply terminals when the transmission chain is operating to pass a transmit signal to the antenna.