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US Patent 8947161 Linear amplifier power supply modulation for envelope tracking

Patent 8947161 was granted and assigned to RF Micro Devices on February, 2015 by the United States Patent and Trademark Office.

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Patent abstractTimelineTable: Further ResourcesReferences
Is a
Patent
Patent

Patent attributes

Patent Applicant
RF Micro Devices
RF Micro Devices
Current Assignee
RF Micro Devices
RF Micro Devices
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
8947161
Date of Patent
February 3, 2015
Patent Application Number
13692084
Date Filed
December 3, 2012
Patent Citations Received
‌
US Patent 12126305 Radio frequency (RF) equalizer in an envelope tracking (ET) circuit
3
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US Patent 12068720 Barely Doherty dual envelope tracking (BD2E) circuit
4
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US Patent 12081173 Complementary envelope detector
5
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US Patent 12107551 Dual-domain power distribution system in a mobile device
6
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US Patent 11716057 Envelope tracking circuitry
7
‌
US Patent 11909385 Fast-switching power management circuit and related apparatus
8
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US Patent 12063018 Envelope tracking integrated circuit operable with multiple types of power amplifiers
9
Patent Primary Examiner
‌
Henry Choe
Patent abstract

Circuitry, which includes a linear amplifier and a linear amplifier power supply, is disclosed. The linear amplifier at least partially provides an envelope power supply signal to a radio frequency (RF) power amplifier (PA) using a selected one of a group of linear amplifier supply voltages. The linear amplifier power supply provides at least one of the group of linear amplifier supply voltages. Selection of the selected one of the group of linear amplifier supply voltages is based on a desired voltage of the envelope power supply signal.

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