公开(公告)号：US11546015B1

公开(公告)日：2023-01-03

申请号：US17322408

申请日：2021-05-17

Applicant: Amazon Technologies, Inc.

Inventor： Nathan Labadie ,  Cheol Su Kim ,  Ravi Ichapurapu ,  Kalyan Teja Posani ,  Omar Fawazhashim Zakaria ,  In Chui Hyun

IPC: H04B3/02 ,  H03F3/24 ,  H04B1/04 ,  H04B3/54 ,  H03M1/12 ,  H04B1/44

Abstract: Technologies directed to cable-loss compensation are described. An apparatus includes a triplexer, a front-end module (FEM) circuit, and a control circuit. The triplexer is coupled to a radio frequency (RF) cable. The triplexer receives a first RF signal and a DC power signal from a device via the RF cable and sends a detection signal being indicative of a transmit power level of the first RF signal to the device via the RF cable. The transmit power level includes an insertion loss of the RF cable. The FEM circuit is coupled to the triplexer and includes a power amplifier (PA). The control circuit is coupled to the triplexer and measures the transmit power level of the first RF signal and converts the first RF signal into the detection signal. The control circuit sends the detection signal back to the device via the RF cable and enables the PA.