GB0905576D0 - IQ phase imbalance correction method in cartesian linearization feedback path with dual phase shifters - Google Patents

IQ phase imbalance correction method in cartesian linearization feedback path with dual phase shifters

Info

Publication number
GB0905576D0
GB0905576D0 GBGB0905576.5A GB0905576A GB0905576D0 GB 0905576 D0 GB0905576 D0 GB 0905576D0 GB 0905576 A GB0905576 A GB 0905576A GB 0905576 D0 GB0905576 D0 GB 0905576D0
Authority
GB
United Kingdom
Prior art keywords
cartesian
correction method
feedback path
imbalance correction
phase
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.)
Granted
Application number
GBGB0905576.5A
Other versions
GB2469076B (en
GB2469076A (en
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Priority to GB0905576.5A priority Critical patent/GB2469076B/en
Publication of GB0905576D0 publication Critical patent/GB0905576D0/en
Priority to EP10762078.3A priority patent/EP2415175A4/en
Priority to PCT/US2010/027744 priority patent/WO2010117582A2/en
Publication of GB2469076A publication Critical patent/GB2469076A/en
Application granted granted Critical
Publication of GB2469076B publication Critical patent/GB2469076B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • H03F1/3294—Acting on the real and imaginary components of the input signal
    • 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
    • H03F1/345—Negative-feedback-circuit arrangements with or without positive feedback using hybrid or directional couplers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/362—Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated
    • H04L27/364—Arrangements for overcoming imperfections in the modulator, e.g. quadrature error or unbalanced I and Q levels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
    • H04L27/367—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion
    • H04L27/368—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion adaptive predistortion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/204—A hybrid coupler being used at the output of an amplifier circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/336—A I/Q, i.e. phase quadrature, modulator or demodulator being used in an amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/57—Separate feedback of real and complex signals being present

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Transmitters (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
GB0905576.5A 2009-03-31 2009-03-31 IQ phase imbalance correction method in cartesian linearization feedback path with dual phase shifters Active GB2469076B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB0905576.5A GB2469076B (en) 2009-03-31 2009-03-31 IQ phase imbalance correction method in cartesian linearization feedback path with dual phase shifters
EP10762078.3A EP2415175A4 (en) 2009-03-31 2010-03-18 Iq phase imbalance correction method in cartesian linearization feedback path with dual phase shifters
PCT/US2010/027744 WO2010117582A2 (en) 2009-03-31 2010-03-18 Iq phase imbalance correction method in cartesian linearization feedback path with dual phase shifters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0905576.5A GB2469076B (en) 2009-03-31 2009-03-31 IQ phase imbalance correction method in cartesian linearization feedback path with dual phase shifters

Publications (3)

Publication Number Publication Date
GB0905576D0 true GB0905576D0 (en) 2009-05-13
GB2469076A GB2469076A (en) 2010-10-06
GB2469076B GB2469076B (en) 2013-05-22

Family

ID=40672064

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0905576.5A Active GB2469076B (en) 2009-03-31 2009-03-31 IQ phase imbalance correction method in cartesian linearization feedback path with dual phase shifters

Country Status (3)

Country Link
EP (1) EP2415175A4 (en)
GB (1) GB2469076B (en)
WO (1) WO2010117582A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8774316B2 (en) 2011-07-13 2014-07-08 Harris Corporation Transmitter including calibration of an in-phase/quadrature (I/Q) modulator and associated methods
US10816655B2 (en) * 2016-12-07 2020-10-27 Texas Instruments Incorporated In-phase (I) and quadrature (Q) imbalance estimation in a radar system
US10367535B2 (en) 2017-12-15 2019-07-30 Motorola Solutions, Inc. Cartesian loop circuits, transmitters, devices, and related methods

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5134718A (en) * 1990-10-31 1992-07-28 Motorola, Inc. Fast phase shift adjusting method and device for linear transmitter
SE470455B (en) * 1992-08-24 1994-04-11 Ericsson Telefon Ab L M Device for compensating the phase rotation in the feedback loop of a Cartesian feedback power amplifier
GB0104535D0 (en) * 2001-02-23 2001-04-11 Univ Bristol Digital cartesian loop
US6947712B2 (en) * 2001-12-12 2005-09-20 Agere Systems Inc. Group delay precompensator for broadband radio frequency transmitter and method of operating the same
GB2400250B (en) * 2003-03-31 2005-05-25 Motorola Inc Wireless communication unit and linearised transmitter circuit therefor
GB2408860B (en) * 2003-12-04 2006-12-20 Motorola Inc Wireless communication unit, linearised transmitter circuit and method of linearising therein
US8175553B2 (en) * 2007-01-17 2012-05-08 Motorola Solutions, Inc. Wireless communication unit, linearised transmitter circuit and method of linearising therein
WO2008088602A1 (en) * 2007-01-17 2008-07-24 Motorola, Inc. Wireless communication unit, linearised transmitter circuit and method of linearising therein

Also Published As

Publication number Publication date
EP2415175A4 (en) 2016-12-21
EP2415175A2 (en) 2012-02-08
WO2010117582A2 (en) 2010-10-14
WO2010117582A3 (en) 2011-01-13
GB2469076B (en) 2013-05-22
GB2469076A (en) 2010-10-06

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