FI20085808A0 - Vääristymien korjaaminen tehovahvistimen ulostulossa - Google Patents

Vääristymien korjaaminen tehovahvistimen ulostulossa

Info

Publication number
FI20085808A0
FI20085808A0 FI20085808A FI20085808A FI20085808A0 FI 20085808 A0 FI20085808 A0 FI 20085808A0 FI 20085808 A FI20085808 A FI 20085808A FI 20085808 A FI20085808 A FI 20085808A FI 20085808 A0 FI20085808 A0 FI 20085808A0
Authority
FI
Finland
Prior art keywords
power amplifier
amplifier output
correcting distortions
distortions
correcting
Prior art date
Application number
FI20085808A
Other languages
English (en)
Swedish (sv)
Inventor
Markus Nentwig
Original Assignee
Nokia Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Corp filed Critical Nokia Corp
Priority to FI20085808A priority Critical patent/FI20085808A0/fi
Publication of FI20085808A0 publication Critical patent/FI20085808A0/fi
Priority to US12/232,872 priority patent/US7898327B2/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
    • H03F1/0244—Stepped control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
    • H03F1/0216—Continuous control
    • H03F1/0222—Continuous control by using a signal derived from the input signal
    • H03F1/0227—Continuous control by using a signal derived from the input signal using supply converters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/321—Use of a microprocessor in an amplifier circuit or its control circuit
FI20085808A 2008-08-29 2008-08-29 Vääristymien korjaaminen tehovahvistimen ulostulossa FI20085808A0 (fi)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI20085808A FI20085808A0 (fi) 2008-08-29 2008-08-29 Vääristymien korjaaminen tehovahvistimen ulostulossa
US12/232,872 US7898327B2 (en) 2008-08-29 2008-09-25 Correcting distortions at output of power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20085808A FI20085808A0 (fi) 2008-08-29 2008-08-29 Vääristymien korjaaminen tehovahvistimen ulostulossa

Publications (1)

Publication Number Publication Date
FI20085808A0 true FI20085808A0 (fi) 2008-08-29

Family

ID=39735676

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20085808A FI20085808A0 (fi) 2008-08-29 2008-08-29 Vääristymien korjaaminen tehovahvistimen ulostulossa

Country Status (2)

Country Link
US (1) US7898327B2 (fi)
FI (1) FI20085808A0 (fi)

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US9112452B1 (en) 2009-07-14 2015-08-18 Rf Micro Devices, Inc. High-efficiency power supply for a modulated load
GB2479859B (en) * 2010-03-30 2017-08-30 Snaptrack Inc Signal alignment for envelope tracking system
US9099961B2 (en) 2010-04-19 2015-08-04 Rf Micro Devices, Inc. Output impedance compensation of a pseudo-envelope follower power management system
US9431974B2 (en) 2010-04-19 2016-08-30 Qorvo Us, Inc. Pseudo-envelope following feedback delay compensation
US8981848B2 (en) 2010-04-19 2015-03-17 Rf Micro Devices, Inc. Programmable delay circuitry
CN102971962B (zh) 2010-04-19 2016-05-25 射频小型装置公司 伪包络跟随功率管理系统
WO2012047738A1 (en) 2010-09-29 2012-04-12 Rf Micro Devices, Inc. SINGLE μC-BUCKBOOST CONVERTER WITH MULTIPLE REGULATED SUPPLY OUTPUTS
US9075673B2 (en) 2010-11-16 2015-07-07 Rf Micro Devices, Inc. Digital fast dB to gain multiplier for envelope tracking systems
EP2673880B1 (en) 2011-02-07 2017-09-06 Qorvo US, Inc. Group delay calibration method for power amplifier envelope tracking
US8269558B1 (en) 2011-03-01 2012-09-18 National Semiconductor Corporation Power supply controller for a multi-gain step RF power amplifier
US9247496B2 (en) 2011-05-05 2016-01-26 Rf Micro Devices, Inc. Power loop control based envelope tracking
US9379667B2 (en) 2011-05-05 2016-06-28 Rf Micro Devices, Inc. Multiple power supply input parallel amplifier based envelope tracking
US9246460B2 (en) 2011-05-05 2016-01-26 Rf Micro Devices, Inc. Power management architecture for modulated and constant supply operation
WO2012166992A1 (en) 2011-05-31 2012-12-06 Rf Micro Devices, Inc. Rugged iq receiver based rf gain measurements
US9019011B2 (en) 2011-06-01 2015-04-28 Rf Micro Devices, Inc. Method of power amplifier calibration for an envelope tracking system
US8760228B2 (en) 2011-06-24 2014-06-24 Rf Micro Devices, Inc. Differential power management and power amplifier architecture
US8952710B2 (en) 2011-07-15 2015-02-10 Rf Micro Devices, Inc. Pulsed behavior modeling with steady state average conditions
US8792840B2 (en) 2011-07-15 2014-07-29 Rf Micro Devices, Inc. Modified switching ripple for envelope tracking system
US9263996B2 (en) 2011-07-20 2016-02-16 Rf Micro Devices, Inc. Quasi iso-gain supply voltage function for envelope tracking systems
WO2013033700A1 (en) 2011-09-02 2013-03-07 Rf Micro Devices, Inc. Split vcc and common vcc power management architecture for envelope tracking
US8957728B2 (en) 2011-10-06 2015-02-17 Rf Micro Devices, Inc. Combined filter and transconductance amplifier
US9024688B2 (en) 2011-10-26 2015-05-05 Rf Micro Devices, Inc. Dual parallel amplifier based DC-DC converter
WO2013063364A1 (en) 2011-10-26 2013-05-02 Rf Micro Devices, Inc. Average frequency control of switcher for envelope tracking
US9484797B2 (en) 2011-10-26 2016-11-01 Qorvo Us, Inc. RF switching converter with ripple correction
US8878606B2 (en) 2011-10-26 2014-11-04 Rf Micro Devices, Inc. Inductance based parallel amplifier phase compensation
US8975959B2 (en) 2011-11-30 2015-03-10 Rf Micro Devices, Inc. Monotonic conversion of RF power amplifier calibration data
US9515621B2 (en) 2011-11-30 2016-12-06 Qorvo Us, Inc. Multimode RF amplifier system
US9250643B2 (en) 2011-11-30 2016-02-02 Rf Micro Devices, Inc. Using a switching signal delay to reduce noise from a switching power supply
US8947161B2 (en) * 2011-12-01 2015-02-03 Rf Micro Devices, Inc. Linear amplifier power supply modulation for envelope tracking
US9041365B2 (en) 2011-12-01 2015-05-26 Rf Micro Devices, Inc. Multiple mode RF power converter
US9256234B2 (en) 2011-12-01 2016-02-09 Rf Micro Devices, Inc. Voltage offset loop for a switching controller
US9280163B2 (en) 2011-12-01 2016-03-08 Rf Micro Devices, Inc. Average power tracking controller
US9494962B2 (en) 2011-12-02 2016-11-15 Rf Micro Devices, Inc. Phase reconfigurable switching power supply
US9813036B2 (en) 2011-12-16 2017-11-07 Qorvo Us, Inc. Dynamic loadline power amplifier with baseband linearization
WO2013093989A1 (ja) * 2011-12-19 2013-06-27 富士通株式会社 増幅回路
US9298198B2 (en) 2011-12-28 2016-03-29 Rf Micro Devices, Inc. Noise reduction for envelope tracking
US8981839B2 (en) 2012-06-11 2015-03-17 Rf Micro Devices, Inc. Power source multiplexer
CN104662792B (zh) 2012-07-26 2017-08-08 Qorvo美国公司 用于包络跟踪的可编程rf陷波滤波器
US9225231B2 (en) 2012-09-14 2015-12-29 Rf Micro Devices, Inc. Open loop ripple cancellation circuit in a DC-DC converter
US9197256B2 (en) 2012-10-08 2015-11-24 Rf Micro Devices, Inc. Reducing effects of RF mixer-based artifact using pre-distortion of an envelope power supply signal
WO2014062902A1 (en) 2012-10-18 2014-04-24 Rf Micro Devices, Inc Transitioning from envelope tracking to average power tracking
US9627975B2 (en) 2012-11-16 2017-04-18 Qorvo Us, Inc. Modulated power supply system and method with automatic transition between buck and boost modes
US9929696B2 (en) 2013-01-24 2018-03-27 Qorvo Us, Inc. Communications based adjustments of an offset capacitive voltage
US9178472B2 (en) 2013-02-08 2015-11-03 Rf Micro Devices, Inc. Bi-directional power supply signal based linear amplifier
WO2014152876A1 (en) 2013-03-14 2014-09-25 Rf Micro Devices, Inc Noise conversion gain limited rf power amplifier
US9197162B2 (en) 2013-03-14 2015-11-24 Rf Micro Devices, Inc. Envelope tracking power supply voltage dynamic range reduction
US9479118B2 (en) 2013-04-16 2016-10-25 Rf Micro Devices, Inc. Dual instantaneous envelope tracking
JP2015032979A (ja) * 2013-08-02 2015-02-16 富士通株式会社 歪補償装置および歪補償方法
US9374005B2 (en) 2013-08-13 2016-06-21 Rf Micro Devices, Inc. Expanded range DC-DC converter
US9614476B2 (en) 2014-07-01 2017-04-04 Qorvo Us, Inc. Group delay calibration of RF envelope tracking
US9379668B1 (en) * 2015-03-31 2016-06-28 Qualcomm Incorporated Envelope tracking circuits and methods with adaptive switching frequency
US9912297B2 (en) 2015-07-01 2018-03-06 Qorvo Us, Inc. Envelope tracking power converter circuitry
US9843294B2 (en) 2015-07-01 2017-12-12 Qorvo Us, Inc. Dual-mode envelope tracking power converter circuitry
US9973147B2 (en) 2016-05-10 2018-05-15 Qorvo Us, Inc. Envelope tracking power management circuit
US10116341B1 (en) * 2017-06-30 2018-10-30 Intel IP Corporation Polar transmitter with joined modulator
CN111512542B (zh) * 2017-12-15 2023-08-22 苹果公司 具有动态变化电压电平的数字包络跟踪的方法和设备
US10476437B2 (en) 2018-03-15 2019-11-12 Qorvo Us, Inc. Multimode voltage tracker circuit
IL263850B (en) * 2018-12-19 2020-06-30 Elbit Systems Land & C4I Ltd System and method for compensating for ripple generated from a power supply
GB2601069B (en) * 2019-12-05 2022-12-28 Cirrus Logic Int Semiconductor Ltd Determining coupling of power supply artefacts into signals in variable power supply amplifiers

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US7091777B2 (en) * 2002-09-30 2006-08-15 Lucent Technologies Inc. Controller for an RF power amplifier
US7095278B2 (en) * 2004-07-28 2006-08-22 Nortel Networks Limited Power amplifier arrangement and method for memory correction/linearization
US7400865B2 (en) 2005-02-09 2008-07-15 Nokia Corporation Variable bandwidth envelope modulator for use with envelope elimination and restoration transmitter architecture and method
JP2007013574A (ja) 2005-06-30 2007-01-18 Toshiba Corp ファイルアクセス手法および特定の画像ファイルを再生する方法およびその画像ファイルの再生が可能なカメラ装置

Also Published As

Publication number Publication date
US7898327B2 (en) 2011-03-01
US20100052781A1 (en) 2010-03-04

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