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US Patent 8717100 Apparatus and methods for capacitive load reduction

Patent 8717100 was granted and assigned to Skyworks Solutions, Inc. on May, 2014 by the United States Patent and Trademark Office.

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Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Patent Inventor Names

Yu-Jui Lin1

Russ Alan Reisner1

Andy Cheng Pang Wu1

Daniel Lee Kaczman1

Date of Patent

May 6, 2014

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Patent Application Number

134191621

Date Filed

March 13, 2012

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Patent Citations Received

US Patent 12126307 Power amplifier modules with controllable envelope tracking noise filters

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US Patent 11677368 Power amplifiers with adaptive bias for envelope tracking applications

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US Patent 11683013 Power amplifier bias modulation for low bandwidth envelope tracking

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US Patent 11705877 Advanced gain shaping for envelope tracking power amplifiers

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US Patent 11855595 Composite cascode power amplifiers for envelope tracking applications

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US Patent 11923808 Low noise amplifiers with low noise figure

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US Patent 11990877 Power amplifier output matching with suppressed harmonics

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US Patent 12074573 Multi-mode broadband low noise amplifier

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Patent Primary Examiner

1

Patent abstract

Apparatus and methods for capacitive load reduction are disclosed. In one embodiment, a power amplifier system includes a power amplifier configured to amplify a radio frequency (RF) signal of a first frequency and an envelope tracker configured to control a supply voltage of the power amplifier using an envelope of the RF signal. The power amplifier system further includes an inductor electrically connected between the power amplifier and the envelope tracker and a capacitor electrically connected between the power amplifier and the envelope tracker. The capacitor and the inductor are configured to have a resonance near the first frequency.

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