Invention Grant
- Patent Title: Lossless switch for radio frequency front-end module
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Application No.: US16041705Application Date: 2018-07-20
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Publication No.: US10735044B2Publication Date: 2020-08-04
- Inventor: Shuming Xu
- Applicant: CoolStar Technology, Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: COOLSTAR TECHNOLOGY, INC.
- Current Assignee: COOLSTAR TECHNOLOGY, INC.
- Current Assignee Address: US CA Sunnyvale
- Agency: Hoffmann & Baron, LLP
- Main IPC: H04B1/44
- IPC: H04B1/44 ; H04B1/00 ; H04B1/48 ; H04B1/40 ; H04B1/38 ; H03F3/24 ; H03F3/72 ; H03F1/02

Abstract:
An integrated front-end module (FEM) includes at least one power amplifier (PA) coupled to an antenna without inclusion of a switching element in a transmit signal path in the FEM between an output of the PA and the antenna. The FEM further includes at least one low-noise amplifier (LNA) and a switching circuit coupled in a receive signal path of the FEM between the antenna and an input of the LNA. The switching circuit is configured in a first mode to disable the PA and to connect the input of the LNA to the antenna for receiving signals from the antenna. The switching circuit is configured in a second mode to disconnect the input of the LNA from the antenna and to enable the PA for transmitting signals to the antenna.
Public/Granted literature
- US20180331715A1 LOSSLESS SWITCH FOR RADIO FREQUENCY FRONT-END MODULE Public/Granted day:2018-11-15
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