AU2002212907A1 - A direct digital amplitude modulator - Google Patents

A direct digital amplitude modulator

Info

Publication number
AU2002212907A1
AU2002212907A1 AU2002212907A AU1290702A AU2002212907A1 AU 2002212907 A1 AU2002212907 A1 AU 2002212907A1 AU 2002212907 A AU2002212907 A AU 2002212907A AU 1290702 A AU1290702 A AU 1290702A AU 2002212907 A1 AU2002212907 A1 AU 2002212907A1
Authority
AU
Australia
Prior art keywords
direct digital
amplitude modulator
digital amplitude
interpolation technique
ddam
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
AU2002212907A
Inventor
Jiren Yuan
Yijun Zhou
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 AU2002212907A1 publication Critical patent/AU2002212907A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/52—Modulators in which carrier or one sideband is wholly or partially suppressed
    • H03C1/54—Balanced modulators, e.g. bridge type, ring type or double balanced type
    • H03C1/542—Balanced modulators, e.g. bridge type, ring type or double balanced type comprising semiconductor devices with at least three electrodes
    • H03C1/547—Balanced modulators, e.g. bridge type, ring type or double balanced type comprising semiconductor devices with at least three electrodes using field-effect transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/36—Amplitude modulation by means of semiconductor device having at least three electrodes
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Amplitude Modulation (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

Various embodiments of a direct digital amplitude modulator (DDAM) for modulating radio frequency (RF) or intermediate frequency (IF) or baseband signal with the invented interpolation technique are disclosed. The interpolation technique greatly reduces the amplitudes of alias signals without using an analog filter. The embodiments therefore are significant for various communication transmitters to achieve simple structure, good linearity and high power efficiency.
AU2002212907A 2000-11-03 2001-11-01 A direct digital amplitude modulator Abandoned AU2002212907A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0004031 2000-11-03
SE0004031A SE516705C2 (en) 2000-11-03 2000-11-03 Direct digital amplitude modulator
PCT/SE2001/002411 WO2002037667A1 (en) 2000-11-03 2001-11-01 A direct digital amplitude modulator

Publications (1)

Publication Number Publication Date
AU2002212907A1 true AU2002212907A1 (en) 2002-05-15

Family

ID=20281694

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002212907A Abandoned AU2002212907A1 (en) 2000-11-03 2001-11-01 A direct digital amplitude modulator

Country Status (8)

Country Link
US (1) US7164328B2 (en)
EP (1) EP1338085B1 (en)
CN (1) CN1473392A (en)
AT (1) ATE422727T1 (en)
AU (1) AU2002212907A1 (en)
DE (1) DE60137641D1 (en)
SE (1) SE516705C2 (en)
WO (1) WO2002037667A1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE516705C2 (en) * 2000-11-03 2002-02-12 Ericsson Telefon Ab L M Direct digital amplitude modulator
US7447272B2 (en) * 2003-04-22 2008-11-04 Freescale Semiconductor, Inc. Filter method and apparatus for polar modulation
US7421037B2 (en) 2003-11-20 2008-09-02 Nokia Corporation Reconfigurable transmitter with direct digital to RF modulator
US7424064B2 (en) 2003-11-20 2008-09-09 Nokia Corporation Polar transmitter with digital to RF converter
US6980779B2 (en) 2003-11-20 2005-12-27 Nokia Corporation RF transmitter using digital-to-RF conversion
US6937848B2 (en) 2003-11-20 2005-08-30 Nokia Corporation Method and device for digital-to-RF conversion
US7333780B2 (en) * 2004-03-03 2008-02-19 Matsushita Electric Industrial Co., Ltd. Polar modulation transmission apparatus and radio communication apparatus
US7983632B2 (en) * 2004-09-24 2011-07-19 Broadcom Corporation Feedback control loop for amplitude modulation in a polar transmitter with a translational loop
US7345612B2 (en) * 2006-02-07 2008-03-18 Nokia Corporation Digital-to-radio frequency conversion device, chip set, transmitter, user terminal and data processing method
US7801498B2 (en) 2006-09-18 2010-09-21 Stmicroelectronics Sa Transmission of analog signals in a system-on-chip
CN101246507B (en) * 2007-12-29 2010-09-29 湖南大学 Parameter design optimization method of Sigma-Delta modulator switching current integrated circuit
EP2146427A1 (en) 2008-07-07 2010-01-20 Nxp B.V. Digital modulator
US7714759B1 (en) * 2008-10-20 2010-05-11 Telefonaktiebolaget Lm Ericsson (Publ) Low power linear interpolation digital-to-analog conversion
US8861627B2 (en) * 2009-07-15 2014-10-14 Fujitsu Limited Direct mm-wave m-ary quadrature amplitude modulation (QAM) modulator operating in saturated power mode
US8831159B2 (en) * 2011-02-09 2014-09-09 Intel Mobile Communications GmbH AM-PM synchronization unit
WO2013152046A1 (en) * 2012-04-02 2013-10-10 Marvell World Trade Ltd. Very compact/linear software defined transmitter with digital modulator
US10382246B2 (en) * 2014-01-07 2019-08-13 Quantumsine Acquisitions Inc. Combined amplitude-time and phase modulation
US11140018B2 (en) * 2014-01-07 2021-10-05 Quantumsine Acquisitions Inc. Method and apparatus for intra-symbol multi-dimensional modulation
CN104052710B (en) 2014-06-24 2017-07-14 华为技术有限公司 Modulation circuit, digital transmitter and the signal modulating method of digital transmitter
CN104122444B (en) * 2014-08-06 2016-10-19 石家庄数英仪器有限公司 All-digital IF spectrum analyzer and frequency spectrum analysis method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118384A (en) * 1982-03-26 1983-10-26 Plessey Co Plc Digital amplitude modulator
EP1010306A1 (en) * 1997-08-25 2000-06-21 Nokia Corporation Digital modulator for angle and/or amplitude modulation
DE69908333T2 (en) * 1998-04-02 2004-09-09 Ericsson Inc. CHIREIX / DOHERTY HYBRID AMPLIFIERS FOR POWER SHAFT SYNTHESIS
SE516705C2 (en) * 2000-11-03 2002-02-12 Ericsson Telefon Ab L M Direct digital amplitude modulator

Also Published As

Publication number Publication date
WO2002037667A1 (en) 2002-05-10
EP1338085A1 (en) 2003-08-27
SE0004031L (en) 2002-02-12
EP1338085B1 (en) 2009-02-11
SE0004031D0 (en) 2000-11-03
ATE422727T1 (en) 2009-02-15
US7164328B2 (en) 2007-01-16
SE516705C2 (en) 2002-02-12
DE60137641D1 (en) 2009-03-26
US20050074073A1 (en) 2005-04-07
CN1473392A (en) 2004-02-04

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