Invention Grant
- Patent Title: Diversity receiver front end system with heterogeneous variable-gain amplifiers
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Application No.: US16596666Application Date: 2019-10-08
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Publication No.: US11271602B2Publication Date: 2022-03-08
- Inventor: William J. Domino , Stephane Richard Marie Wloczysiak , Bipul Agarwal
- Applicant: SKYWORKS SOLUTIONS, INC.
- Applicant Address: US MA Woburn
- Assignee: SKYWORKS SOLUTIONS, INC.
- Current Assignee: SKYWORKS SOLUTIONS, INC.
- Current Assignee Address: US MA Woburn
- Agency: Chang & Hale LLP
- Main IPC: H04L25/06
- IPC: H04L25/06 ; H04B1/18 ; H03F3/19 ; H04B7/08 ; H03G3/30 ; H03F3/72 ; H04B1/00 ; H04B7/04

Abstract:
A receiving system includes a controller that selectively activates one or more of a plurality of paths between an input of a first multiplexer and an output of a second multiplexer. The receiving system includes a plurality of bandpass filters, each one of the bandpass filters being disposed along a corresponding one of the plurality of paths and configured to filter a signal received at the bandpass filter to a respective frequency band. The receiving system also includes a plurality of variable-gain amplifiers (VGAs), each one of the plurality of VGAs disposed along a corresponding one of the plurality of paths and configured to amplify a signal received at the VGA with a gain controlled by an amplifier control signal received from the controller. At least one, but not all, of the VGAs is a fixed-gain amplifier with a bypass switch to selectively bypass the fixed-gain amplifier.
Information query