Invention Grant
US09385680B2 Crest factor reduction applied to shaping table to increase power amplifier efficiency of envelope tracking amplifier
有权
波峰因数降低应用于整形表，以增加包络跟踪放大器的功率放大器效率
- Patent Title: Crest factor reduction applied to shaping table to increase power amplifier efficiency of envelope tracking amplifier
- Patent Title (中): 波峰因数降低应用于整形表，以增加包络跟踪放大器的功率放大器效率
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Application No.: US13742506Application Date: 2013-01-16
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Publication No.: US09385680B2Publication Date: 2016-07-05
- Inventor: Gerard Wimpenny
- Applicant: SNAPTRACK, INC.
- Applicant Address: US CA San Diego
- Assignee: SnapTrack, Inc.
- Current Assignee: SnapTrack, Inc.
- Current Assignee Address: US CA San Diego
- Priority: GB1200628.4 20120116
- Main IPC: H03G3/20
- IPC: H03G3/20 ; H03G11/04 ; H03F3/189 ; H03F1/02
Abstract:
There is disclosed a method of controlling an input to an envelope modulated power supply of an envelope tracking amplification stage, comprising: generating an envelope signal representing the envelope of a signal to be amplified; applying a shaping function to the envelope signal to generate a shaped envelope signal, including: clipping the shaped envelope signal at high input envelope values; and providing the shaped envelope signal as an input signal to the envelope modulated power supply.
Public/Granted literature
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