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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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Current Assignee
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
87171001
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
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US Patent 12126307 Power amplifier modules with controllable envelope tracking noise filters
2
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US Patent 11677368 Power amplifiers with adaptive bias for envelope tracking applications
3
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US Patent 11683013 Power amplifier bias modulation for low bandwidth envelope tracking
4
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US Patent 11705877 Advanced gain shaping for envelope tracking power amplifiers
5
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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
7
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US Patent 11990877 Power amplifier output matching with suppressed harmonics
8
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US Patent 12074573 Multi-mode broadband low noise amplifier
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Patent Primary Examiner
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Hieu Nguyen
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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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