Invention Grant
- Patent Title: Power amplifier protection
- Patent Title (中): 功率放大器保护
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Application No.: US12560397Application Date: 2009-09-15
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Publication No.: US07864498B1Publication Date: 2011-01-04
- Inventor: Wayne A. Loeb , Alireza Shirvani-Mahdavi
- Applicant: Wayne A. Loeb , Alireza Shirvani-Mahdavi
- Applicant Address: BM Hamilton
- Assignee: Marvell International Ltd.
- Current Assignee: Marvell International Ltd.
- Current Assignee Address: BM Hamilton
- Main IPC: H02H9/04
- IPC: H02H9/04 ; H02H3/22

Abstract:
A circuit includes: an input of shunt circuitry to couple with an output of detection circuitry that provides a protection signal; an output of the shunt circuitry to couple with an input of power amplification circuitry; and the shunt circuitry configured to reduce a gain of the power amplification circuitry responsive to the protection signal, the shunt circuitry including a delay stage configured to continue shunting of an input signal of the power amplification circuitry for a time period corresponding to a turn on time of the power amplification circuitry. In addition, a method includes: receiving a protection signal from detection circuitry; responsive to the protection signal, shunting an input signal of power amplification circuitry to reduce a gain of the power amplification circuitry; and continuing the shunting for a time period corresponding to a turn on time of the power amplification circuitry.
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