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AU2002214448A1 - A transmitter - Google Patents

A transmitter

Info

Publication number
AU2002214448A1
AU2002214448A1 AU2002214448A AU1444802A AU2002214448A1 AU 2002214448 A1 AU2002214448 A1 AU 2002214448A1 AU 2002214448 A AU2002214448 A AU 2002214448A AU 1444802 A AU1444802 A AU 1444802A AU 2002214448 A1 AU2002214448 A1 AU 2002214448A1
Authority
AU
Australia
Prior art keywords
signal
conversion
frequency
transmission signal
transmitter
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
AU2002214448A
Inventor
Mats Klingberg
Scott Leyonhjelm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of AU2002214448A1 publication Critical patent/AU2002214448A1/en
Abandoned legal-status Critical Current

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
    • 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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • 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
    • 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
    • H04B2001/0433—Circuits with power amplifiers with linearisation using feedback
    • 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
    • H04B2001/0491—Circuits with frequency synthesizers, frequency converters or modulators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Pens And Brushes (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

A transmitter comprises a device ( 20 ) for frequency up-conversion of a communication signal having at least two consecutive frequency conversion stages, a power amplifier ( 27 ) for amplifying the output signal therefrom for obtaining a transmission signal and means ( 29 ) for extracting the transmission signal. It also has a device for frequency down-conversion of said extracted transmission signal to the same frequency as the communication signal before said up-conversion for creating a feedback signal. Said two devices use the same local oscillators ( 25, 26 ). The transmitter also has means for signal parameter adaptation of the communication signal on basis of the feedback signal for obtaining a desired character of the transmission signal. The frequency down-conversion device comprises a local oscillator combiner ( 30 ) producing a combined frequency signal used for frequency down-conversion of the transmission signal reducing the number of conversion stages in the path of the extracted transmission signal with respect to the corresponding number of the frequency up-conversion device.
AU2002214448A 2000-11-24 2001-11-07 A transmitter Abandoned AU2002214448A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0004330 2000-11-24
SE0004330A SE519258C2 (en) 2000-11-24 2000-11-24 Transmitter
PCT/SE2001/002440 WO2002043260A1 (en) 2000-11-24 2001-11-07 A transmitter

Publications (1)

Publication Number Publication Date
AU2002214448A1 true AU2002214448A1 (en) 2002-06-03

Family

ID=20281966

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002214448A Abandoned AU2002214448A1 (en) 2000-11-24 2001-11-07 A transmitter

Country Status (7)

Country Link
US (1) US7065330B2 (en)
EP (1) EP1336252B1 (en)
AT (1) ATE367683T1 (en)
AU (1) AU2002214448A1 (en)
DE (1) DE60129457D1 (en)
SE (1) SE519258C2 (en)
WO (1) WO2002043260A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050143025A1 (en) * 2002-06-19 2005-06-30 Masayoshi Suzuki Transmitting apparatus
JP4323968B2 (en) * 2004-01-14 2009-09-02 株式会社日立コミュニケーションテクノロジー Timing adjustment method for wireless communication device
US8085868B2 (en) * 2004-11-03 2011-12-27 Freescale Semiconductor, Inc. Phase modulating and combining circuit
FI20055632A0 (en) * 2005-11-30 2005-11-30 Nokia Corp Attenuation of a local oscillator leak in a radio transmitter
WO2008146090A1 (en) * 2007-05-25 2008-12-04 Freescale Semiconductor, Inc. Wireless communication unit, baseband module, radio frequency module, wireless terminal and computer program product
US7576665B2 (en) * 2007-11-27 2009-08-18 Amx Llc System and method for receiving analog and digital input
US8094748B2 (en) * 2008-07-14 2012-01-10 Motorola Mobility, Inc. Transceiver architecture with combined smart antenna calibration and digital predistortion
US8499328B2 (en) * 2010-02-02 2013-07-30 Vecima Networks Inc. Agile distortion and noise cancellation across multiple channels and ports in a CATV upconverter/modulator
US8837620B2 (en) * 2011-05-03 2014-09-16 Optis Cellular Technology, Llc Adaptive multi-channel transmitter linearization system using a shared feedback receiver
CN105721036B (en) * 2016-02-03 2019-04-16 北京邮电大学 A kind of MIMO frequency conversion system
TWI610566B (en) * 2016-07-22 2018-01-01 晨星半導體股份有限公司 Audio/video signal processing circuit and associated signal processing method
CN112953868B (en) * 2019-12-10 2022-09-09 珠海全志科技股份有限公司 Predistortion method, apparatus, computer device and readable storage medium

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4700151A (en) * 1985-03-20 1987-10-13 Nec Corporation Modulation system capable of improving a transmission system
GB9320078D0 (en) * 1993-09-29 1993-11-17 Linear Modulation Tech Cartesian amplifier power control and related applications
JPH08316756A (en) * 1995-05-22 1996-11-29 Saitama Nippon Denki Kk Transmission output control system
US5732333A (en) * 1996-02-14 1998-03-24 Glenayre Electronics, Inc. Linear transmitter using predistortion
US5937011A (en) * 1996-03-26 1999-08-10 Airnet Communications Corp. Multi-carrier high power amplifier using digital pre-distortion
US5974302A (en) * 1997-03-24 1999-10-26 Lucent Technologies Inc. Dual band cellular/PCS transceiver
US6072364A (en) * 1997-06-17 2000-06-06 Amplix Adaptive digital predistortion for power amplifiers with real time modeling of memoryless complex gains
US6029052A (en) * 1997-07-01 2000-02-22 Telefonaktiebolaget Lm Ericsson Multiple-mode direct conversion receiver
GB9811381D0 (en) * 1998-05-27 1998-07-22 Nokia Mobile Phones Ltd Predistortion control for power reduction
JP2000138602A (en) 1998-10-30 2000-05-16 Hewlett Packard Japan Ltd Up-down converter
KR100398664B1 (en) * 2001-02-21 2003-09-19 주식회사 쏠리테크 Device for Linearizing Power Amplifier with Predistortion in IF Band

Also Published As

Publication number Publication date
SE0004330L (en) 2002-05-25
WO2002043260A1 (en) 2002-05-30
SE519258C2 (en) 2003-02-04
EP1336252A1 (en) 2003-08-20
US20040029542A1 (en) 2004-02-12
SE0004330D0 (en) 2000-11-24
ATE367683T1 (en) 2007-08-15
US7065330B2 (en) 2006-06-20
DE60129457D1 (en) 2007-08-30
EP1336252B1 (en) 2007-07-18

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