公开(公告)号：US11095329B1

公开(公告)日：2021-08-17

申请号：US16853969

申请日：2020-04-21

Applicant: GLOBALFOUNDRIES U.S. Inc.

Inventor： Ahmad Alagry ,  Mustapha Slamani

IPC: H04B1/18 ,  H03H11/34 ,  H04B17/00 ,  H04B1/10 ,  H04B1/00

Abstract: Disclosed is a filter and amplification circuit including a first switch with a single input and multiple outputs, a second switch with multiple inputs and a single output, and signal paths (each with an amplifier and band pass filter) between the outputs of the first switch and the inputs of the second switch, respectively. During filtering, the input of the first switch receives a radio frequency (RF) signal and filtering is performed through a combination of a selected signal path (which is active and has its amplifier enabled) and non-selected signal paths (which are passively coupled to the selected signal path and have their amplifiers disabled). Isolation is provided by the switches (e.g., solid-state switches) and the amplifiers, ensuring that the filtered RF signal at the single output of the second switch has a desired high spurious-free dynamic range (SFDR). Also disclosed are a test system and associated methods.