Invention Grant
- Patent Title: Dual-mode RF transmission frontend
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Application No.: US15714395Application Date: 2017-09-25
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Publication No.: US10256783B2Publication Date: 2019-04-09
- Inventor: Hong-Lin Chu , Hsieh-Hung Hsieh , Tzu-Jin Yeh
- Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee Address: TW Hsin-Chu
- Agency: Duane Morris LLP
- Main IPC: H03F3/72
- IPC: H03F3/72 ; H04B1/04 ; H03C1/36

Abstract:
A transmission frontend includes a modulator configured to generate a modulated signal. A first selectable path is electrically coupled to the modulator and is configured to generate a first signal having a first power level. A second selectable path is electrically coupled to the modulator and is configured to generate a second signal having a second power level. The first power level is greater than the second power level. A transformer is electrically coupled to each of the first selectable path and the second selectable path. An antenna is electrically coupled to the transformer.
Public/Granted literature
- US20180212568A1 DUAL-MODE RF TRANSMISSION FRONTEND Public/Granted day:2018-07-26
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