AU2001214630A1 - Modulator with low sensitivity to amplitude and phase errors of the carrier signal - Google Patents

Modulator with low sensitivity to amplitude and phase errors of the carrier signal

Info

Publication number
AU2001214630A1
AU2001214630A1 AU2001214630A AU1463001A AU2001214630A1 AU 2001214630 A1 AU2001214630 A1 AU 2001214630A1 AU 2001214630 A AU2001214630 A AU 2001214630A AU 1463001 A AU1463001 A AU 1463001A AU 2001214630 A1 AU2001214630 A1 AU 2001214630A1
Authority
AU
Australia
Prior art keywords
signal
summer
receives
modulation
carrier signal
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
AU2001214630A
Inventor
Kamal Gurkanwal Sahota
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.)
Qualcomm Inc
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of AU2001214630A1 publication Critical patent/AU2001214630A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/14—Balanced arrangements
    • H03D7/1425—Balanced arrangements with transistors
    • H03D7/1433—Balanced arrangements with transistors using bipolar transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/14—Balanced arrangements
    • H03D7/1425—Balanced arrangements with transistors
    • H03D7/1441—Balanced arrangements with transistors using field-effect transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/14—Balanced arrangements
    • H03D7/1425—Balanced arrangements with transistors
    • H03D7/1458—Double balanced arrangements, i.e. where both input signals are differential
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • H03D7/166—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • 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
    • H04L27/0014—Carrier regulation
    • H04L2027/0016—Stabilisation of local oscillators

Abstract

A modulator includes two modulation units and a summer (412c). Each of the first and second modulation units receives and modulates a set of carrier signals (ILO, QLO) with a set of information signals (IIN, QIN) in accordance with a particular modulation scheme to generate a respective modulated component, with the second modulated component (b) including a signal inversion relative to the first modulation component (a). The summer combines the first (a) and second (b) modulated components to generate a modulated signal. Each modulation unit can include a pair of mixers (410a, 410b; 410c, 410d) and a summer (412a; 412b). The first mixer (410a) receives and modulates an inphase carrier signal (ILO) with a first information signal (IIN). The second mixer (410b) receives and modulates a quadrature carrier signal with a second information signal (QIN). The summer (412a) receives and combines the outputs from the first and second mixers to provide the modulated component. The information signals provided to the first and second modulation units are swapped and may be inverted.
AU2001214630A 2000-11-03 2000-11-03 Modulator with low sensitivity to amplitude and phase errors of the carrier signal Abandoned AU2001214630A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2000/030406 WO2002037787A1 (en) 2000-11-03 2000-11-03 Modulator with low sensitivity to amplitude and phase errors of the carrier signal

Publications (1)

Publication Number Publication Date
AU2001214630A1 true AU2001214630A1 (en) 2002-05-15

Family

ID=21741963

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001214630A Abandoned AU2001214630A1 (en) 2000-11-03 2000-11-03 Modulator with low sensitivity to amplitude and phase errors of the carrier signal

Country Status (9)

Country Link
EP (2) EP1330905B1 (en)
JP (1) JP4708674B2 (en)
KR (1) KR100715080B1 (en)
CN (1) CN1235378C (en)
AT (2) ATE381838T1 (en)
AU (1) AU2001214630A1 (en)
DE (2) DE60037540T2 (en)
HK (1) HK1063546A1 (en)
WO (1) WO2002037787A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6983024B2 (en) * 2003-03-18 2006-01-03 Qualcomm Inc. Quadra-polar modulator
US20090036064A1 (en) * 2007-07-31 2009-02-05 Ashoke Ravi Digital integrated transmitter based on four-path phase modulation
EP2146427A1 (en) * 2008-07-07 2010-01-20 Nxp B.V. Digital modulator
IT1395091B1 (en) * 2009-04-10 2012-09-05 Siae Microelettronica Spa METHOD AND RELATIVE DEVICE FOR PROCESSING DIGITAL SIGNALS FOR AMPLITUDE MODULATION IN SQUARE
JP5440022B2 (en) * 2009-08-24 2014-03-12 ソニー株式会社 Demodulator
KR101454802B1 (en) * 2010-10-22 2014-11-03 한국전자통신연구원 Asynchronous Pipeline System, Stage and the Data Transfer Mechanism
WO2014052943A1 (en) 2012-09-28 2014-04-03 Viasat, Inc. Wideband double balanced image reject mixer
EP3025424B1 (en) 2013-07-22 2017-07-12 Telefonaktiebolaget LM Ericsson (publ) A frequency converter
US9088471B1 (en) * 2014-02-19 2015-07-21 Qualcomm Incorporated Quadrature combining and adjusting
US9628318B1 (en) * 2016-04-26 2017-04-18 Tm Ip Holdings, Llc Transpositional modulation communications
CN106817136B (en) * 2017-02-21 2022-09-16 和芯星通科技(北京)有限公司 Method, device and receiver for realizing orthogonal signal processing

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761798A (en) * 1987-04-02 1988-08-02 Itt Aerospace Optical Baseband phase modulator apparatus employing digital techniques
US5111155A (en) * 1991-03-04 1992-05-05 Motorola, Inc. Distortion compensation means and method
US5412351A (en) * 1993-10-07 1995-05-02 Nystrom; Christian Quadrature local oscillator network
US5511236A (en) * 1993-12-07 1996-04-23 National Semiconductor Corporation Half duplex RF transceiver
US5438301A (en) 1994-07-25 1995-08-01 At&T Corp. Modem having a phase corrector and a voltage controlled oscillator implemented using a multi-stage ring oscillator
JP3115821B2 (en) * 1995-04-14 2000-12-11 エイ・ティ・アンド・ティ・コーポレーション Modulation circuit
FR2739239B1 (en) * 1995-09-27 1997-11-14 Alcatel Telspace DEVICE FOR CORRECTION OF A QUADRATURE FAULT OF A QUADRATURE MODULATOR AND / OR A DEMODULATOR OF A SIGNAL WITH PLURALITY OF PHASE STATES, EMITTER AND RECEIVER CORRESPONDING
US6240142B1 (en) * 1998-01-07 2001-05-29 Qualcomm Incorporated Quadrature modulator and demodulator
DE19934215C1 (en) * 1999-07-21 2001-03-29 Rohde & Schwarz Quadrature mixer for HF transmission applications uses analogue demodulator providing feedback signal used for evaluation and correction of offset error for each quadrature component
DE10012003A1 (en) * 2000-03-11 2001-09-13 Philips Corp Intellectual Pty Transmitter and method for generating a transmission signal

Also Published As

Publication number Publication date
EP1876703A3 (en) 2008-04-02
DE60045454D1 (en) 2011-02-10
JP2004527927A (en) 2004-09-09
DE60037540T2 (en) 2008-12-24
CN1235378C (en) 2006-01-04
ATE493820T1 (en) 2011-01-15
WO2002037787A1 (en) 2002-05-10
EP1330905A1 (en) 2003-07-30
DE60037540D1 (en) 2008-01-31
ATE381838T1 (en) 2008-01-15
KR100715080B1 (en) 2007-05-07
CN1488221A (en) 2004-04-07
EP1876703A2 (en) 2008-01-09
HK1063546A1 (en) 2004-12-31
EP1330905B1 (en) 2007-12-19
EP1876703B1 (en) 2010-12-29
JP4708674B2 (en) 2011-06-22
KR20030051779A (en) 2003-06-25

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