[go: up one dir, main page]

FI20075690A0 - Signaalin esivääristäminen radiolähettimessä - Google Patents

Signaalin esivääristäminen radiolähettimessä

Info

Publication number
FI20075690A0
FI20075690A0 FI20075690A FI20075690A FI20075690A0 FI 20075690 A0 FI20075690 A0 FI 20075690A0 FI 20075690 A FI20075690 A FI 20075690A FI 20075690 A FI20075690 A FI 20075690A FI 20075690 A0 FI20075690 A0 FI 20075690A0
Authority
FI
Finland
Prior art keywords
distortion
signal pre
radio transmitters
transmitters
radio
Prior art date
Application number
FI20075690A
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 FI20075690A priority Critical patent/FI20075690A0/fi
Publication of FI20075690A0 publication Critical patent/FI20075690A0/fi
Priority to US11/984,398 priority patent/US20090088093A1/en
Priority to PCT/FI2008/050542 priority patent/WO2009043970A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0475—Circuits with means for limiting noise, interference or distortion
    • 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
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers
    • H04B2001/0425—Circuits with power amplifiers with linearisation using predistortion

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
FI20075690A 2007-10-01 2007-10-01 Signaalin esivääristäminen radiolähettimessä FI20075690A0 (fi)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI20075690A FI20075690A0 (fi) 2007-10-01 2007-10-01 Signaalin esivääristäminen radiolähettimessä
US11/984,398 US20090088093A1 (en) 2007-10-01 2007-11-16 Signal predistortion in radio transmitter
PCT/FI2008/050542 WO2009043970A1 (en) 2007-10-01 2008-09-29 Signal predistortion in radio transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20075690A FI20075690A0 (fi) 2007-10-01 2007-10-01 Signaalin esivääristäminen radiolähettimessä

Publications (1)

Publication Number Publication Date
FI20075690A0 true FI20075690A0 (fi) 2007-10-01

Family

ID=38656837

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20075690A FI20075690A0 (fi) 2007-10-01 2007-10-01 Signaalin esivääristäminen radiolähettimessä

Country Status (3)

Country Link
US (1) US20090088093A1 (fi)
FI (1) FI20075690A0 (fi)
WO (1) WO2009043970A1 (fi)

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8744384B2 (en) 2000-07-20 2014-06-03 Blackberry Limited Tunable microwave devices with auto-adjusting matching circuit
US8380143B2 (en) 2002-05-01 2013-02-19 Dali Systems Co. Ltd Power amplifier time-delay invariant predistortion methods and apparatus
US8811917B2 (en) 2002-05-01 2014-08-19 Dali Systems Co. Ltd. Digital hybrid mode power amplifier system
US7711337B2 (en) 2006-01-14 2010-05-04 Paratek Microwave, Inc. Adaptive impedance matching module (AIMM) control architectures
CN1983851B (zh) * 2006-06-16 2010-07-28 华为技术有限公司 一种使功放支持多功率的方法及射频模块
US7714676B2 (en) 2006-11-08 2010-05-11 Paratek Microwave, Inc. Adaptive impedance matching apparatus, system and method
US7535312B2 (en) 2006-11-08 2009-05-19 Paratek Microwave, Inc. Adaptive impedance matching apparatus, system and method with improved dynamic range
EP3790244A1 (en) 2006-12-26 2021-03-10 Dali Systems Co. Ltd. Method and system for baseband predistortion linearization in multi-channel wideband communication systems
US9026067B2 (en) * 2007-04-23 2015-05-05 Dali Systems Co. Ltd. Remotely reconfigurable power amplifier system and method
US7917104B2 (en) 2007-04-23 2011-03-29 Paratek Microwave, Inc. Techniques for improved adaptive impedance matching
US7991363B2 (en) 2007-11-14 2011-08-02 Paratek Microwave, Inc. Tuning matching circuits for transmitter and receiver bands as a function of transmitter metrics
US7970091B2 (en) * 2007-11-30 2011-06-28 Nautel Limited Method for reducing spectral regrowth in a spectrally efficient digital modulation scheme
KR101669173B1 (ko) 2007-12-07 2016-10-25 달리 시스템즈 씨오. 엘티디. 베이스밴드-도출형 광대역 ｒｆ 디지털 전치 왜곡 시스템
US8825100B2 (en) * 2008-08-11 2014-09-02 Blackberry Limited Method and system for providing a power boost for a wireless communication link using a subset of subcarrier frequencies of the wireless communication link channel as a reduced bandwidth channel
US8072285B2 (en) 2008-09-24 2011-12-06 Paratek Microwave, Inc. Methods for tuning an adaptive impedance matching network with a look-up table
EP2430531B1 (en) * 2009-04-24 2019-12-04 Dali Systems Co. Ltd. Remotely reconfigurable power amplifier system and method
JP2011082953A (ja) * 2009-09-10 2011-04-21 Sumitomo Electric Ind Ltd 増幅装置、及びこれを用いた無線送信装置
US9026062B2 (en) 2009-10-10 2015-05-05 Blackberry Limited Method and apparatus for managing operations of a communication device
US8324953B1 (en) * 2009-10-21 2012-12-04 Vyycore Ltd. Method and a system for signal processing
US8803631B2 (en) 2010-03-22 2014-08-12 Blackberry Limited Method and apparatus for adapting a variable impedance network
JP5901612B2 (ja) 2010-04-20 2016-04-13 ブラックベリー リミテッド 通信デバイスにおける干渉を管理するための方法および装置
US8867561B2 (en) 2010-05-10 2014-10-21 Comcast Cable Communications, Llc Managing upstream transmission in a network
CN103597807B (zh) 2010-09-14 2015-09-30 大理系统有限公司 远程可重新配置的分布式天线系统和方法
US8655293B2 (en) 2010-09-15 2014-02-18 Intel Mobile Communications GmbH PA bias optimization for modulation schemes with variable bandwidth
US8712340B2 (en) 2011-02-18 2014-04-29 Blackberry Limited Method and apparatus for radio antenna frequency tuning
US8594584B2 (en) 2011-05-16 2013-11-26 Blackberry Limited Method and apparatus for tuning a communication device
WO2013004273A1 (en) * 2011-07-01 2013-01-10 Telefonaktiebolaget L M Ericsson (Publ) Enhanced linearizing for a transmitter comprising a power amplifier
US9769826B2 (en) 2011-08-05 2017-09-19 Blackberry Limited Method and apparatus for band tuning in a communication device
CN102893399B (zh) 2012-05-24 2015-09-09 华为技术有限公司 预失真校正方法、预失真校正装置、发射机及基站
US9853363B2 (en) 2012-07-06 2017-12-26 Blackberry Limited Methods and apparatus to control mutual coupling between antennas
US9350405B2 (en) 2012-07-19 2016-05-24 Blackberry Limited Method and apparatus for antenna tuning and power consumption management in a communication device
US8874052B2 (en) * 2012-11-15 2014-10-28 Motorola Mobility Llc Method and apparatus for improving efficiency and distortion leakage in a wireless power amplifier
US9374113B2 (en) * 2012-12-21 2016-06-21 Blackberry Limited Method and apparatus for adjusting the timing of radio antenna tuning
US10404295B2 (en) 2012-12-21 2019-09-03 Blackberry Limited Method and apparatus for adjusting the timing of radio antenna tuning
US9813086B2 (en) * 2012-12-21 2017-11-07 Mediatek Singapore Pte. Ltd RF transmitter, integrated circuit device, wireless communication unit and method therefor
US9680434B2 (en) * 2012-12-28 2017-06-13 Mediatek, Inc. Method and apparatus for calibrating an envelope tracking system
JP6253298B2 (ja) * 2013-07-31 2017-12-27 パナソニック株式会社 送信装置
GB2516979A (en) 2013-08-09 2015-02-11 Univ Surrey Predistortion in satellite signal transmission systems
US9054940B2 (en) * 2013-10-25 2015-06-09 Mitsubishi Electric Research Laboratories, Inc. System and method for linearizing power amplifiers
US9379744B2 (en) 2014-09-16 2016-06-28 Honeywell International Inc. System and method for digital predistortion
US9438319B2 (en) 2014-12-16 2016-09-06 Blackberry Limited Method and apparatus for antenna selection
DE102014119625A1 (de) * 2014-12-23 2016-06-23 Intel IP Corporation Schaltung und Verfahren zum Bereitstellen eines Radiofrequenzsignals
US9998241B2 (en) * 2015-02-19 2018-06-12 Mediatek Inc. Envelope tracking (ET) closed-loop on-the-fly calibration
DE102015110238A1 (de) 2015-06-25 2016-12-29 Intel IP Corporation Eine Schaltung und ein Verfahren zum Erzeugen eines Radiofrequenzsignals
CN109075745B (zh) * 2015-11-10 2020-07-14 华为技术有限公司 预失真装置
EP3252949B1 (en) * 2016-06-01 2020-03-18 Intel IP Corporation Methods and devices for predistortion of signals
US9973370B1 (en) * 2017-06-06 2018-05-15 Intel IP Corporation Memory predistortion in bandwidth limited envelope tracking
US11997540B2 (en) * 2021-04-30 2024-05-28 Qualcomm Incorporated Techniques for displaying a radio access technology status indication based on bandwidth metrics

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0891041B1 (de) * 1997-07-08 2004-03-03 Siemens Aktiengesellschaft Sendeeinrichtung
US6144255A (en) * 1998-10-19 2000-11-07 Powerwave Technologies, Inc. Feedforward amplification system having mask detection compensation
GB2351624B (en) * 1999-06-30 2003-12-03 Wireless Systems Int Ltd Reducing distortion of signals
JP3805221B2 (ja) * 2001-09-18 2006-08-02 株式会社日立国際電気 歪み補償装置
US7035601B2 (en) * 2003-02-27 2006-04-25 Nokia Corporation Data transmission method, base station and transmitter for compensating for non-linearities in a transmission chain
US7409193B2 (en) * 2003-07-03 2008-08-05 Zarbana Digital Fund Llc Predistortion circuit for a transmit system
US7023273B2 (en) * 2003-10-06 2006-04-04 Andrew Corporation Architecture and implementation methods of digital predistortion circuitry
US7183847B2 (en) * 2004-01-28 2007-02-27 Ntt Docomo, Inc. Multi-band look-up table type predistorter
US7577211B2 (en) * 2004-03-01 2009-08-18 Powerwave Technologies, Inc. Digital predistortion system and method for linearizing an RF power amplifier with nonlinear gain characteristics and memory effects
US7440733B2 (en) * 2004-04-09 2008-10-21 Powerwave Technologies, Inc. Constant gain nonlinear envelope tracking high efficiency linear amplifier
CN101057394B (zh) * 2004-09-15 2010-12-15 艾利森电话股份有限公司 与信号预失真有关的布置和方法
JP4619827B2 (ja) * 2005-03-07 2011-01-26 富士通株式会社 歪補償装置
DE102005013880B3 (de) * 2005-03-24 2006-04-20 Infineon Technologies Ag Verfahren zur Vorverzerrung eines Signals und Sendeeinrichtung mit digitaler Vorverzerrung, insbesondere für Mobilfunk
WO2008045159A2 (en) * 2006-10-06 2008-04-17 Skyworks Solutions, Inc. Output power correction module for amplifiers in transmitters
US20080130785A1 (en) * 2006-12-04 2008-06-05 Raytheon Company Frequency and temperature dependent pre-distortion
FI20065783A0 (sv) * 2006-12-08 2006-12-08 Nokia Corp Signalfördistorsion i radiosändare

Also Published As

Publication number Publication date
WO2009043970A1 (en) 2009-04-09
US20090088093A1 (en) 2009-04-02

Similar Documents

Publication Publication Date Title
FI20075690A0 (fi) Signaalin esivääristäminen radiolähettimessä
FI20065783A0 (sv) Signalfördistorsion i radiosändare
IL231832A (en) Preamble design for a wireless signal
EP2131492A4 (en) RF GAIN SETUP
DK2258026T3 (da) Rf-terminator
DE602008002163D1 (de) Spikeloser Reifen
DE602008001482D1 (de) Luftreifen
DE602008003716D1 (de) Luftreifen
PL2232713T3 (pl) Wydajne przetwarzanie sygnału w bezprzewodowych nadajnikach radiowych
EP2127911A4 (en) TIRE
DE602008001114D1 (de) Spikeloser Reifen
DE602008001751D1 (de) Luftreifen
BRPI0821843A8 (pt) pneumático
EP2220838A4 (en) SOFTWARE-DEFINED RADIO ARCHITECTURE
FI20095373L (fi) Antenni
EP2472719A4 (en) DOHERTY AMPLIFIER
TWI348815B (en) Class d amplifier
DE602008006148D1 (de) Luftreifen
DE602008003956D1 (de) Luftreifen
BRPI0821839A2 (pt) Pneumático
DE602008004005D1 (de) Luftreifen
GB2446509B (en) Transmitter including pre-distortion
EP2165857A4 (en) TIRE
EP2147807A4 (en) Pneumatic tire
DE602007005059D1 (de) Schlitzantenne mit integrierten Verstärkern

Legal Events

Date Code Title Description
FD Application lapsed