FR2718585B1 - Modulateur avec codage amélioré. - Google Patents

Modulateur avec codage amélioré.

Info

Publication number
FR2718585B1
FR2718585B1 FR9504039A FR9504039A FR2718585B1 FR 2718585 B1 FR2718585 B1 FR 2718585B1 FR 9504039 A FR9504039 A FR 9504039A FR 9504039 A FR9504039 A FR 9504039A FR 2718585 B1 FR2718585 B1 FR 2718585B1
Authority
FR
France
Prior art keywords
modulator
improved coding
coding
improved
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.)
Expired - Fee Related
Application number
FR9504039A
Other languages
English (en)
Other versions
FR2718585A1 (fr
Inventor
David W Cripe
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.)
Harris Corp
Original Assignee
Harris 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 Harris Corp filed Critical Harris Corp
Publication of FR2718585A1 publication Critical patent/FR2718585A1/fr
Application granted granted Critical
Publication of FR2718585B1 publication Critical patent/FR2718585B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • 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
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H03F3/2175—Class D power amplifiers; Switching amplifiers using analogue-digital or digital-analogue conversion

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Analogue/Digital Conversion (AREA)
FR9504039A 1994-04-12 1995-04-05 Modulateur avec codage amélioré. Expired - Fee Related FR2718585B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/226,565 US5392007A (en) 1994-04-12 1994-04-12 Modulator having improved encoding

Publications (2)

Publication Number Publication Date
FR2718585A1 FR2718585A1 (fr) 1995-10-13
FR2718585B1 true FR2718585B1 (fr) 1997-08-29

Family

ID=22849425

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9504039A Expired - Fee Related FR2718585B1 (fr) 1994-04-12 1995-04-05 Modulateur avec codage amélioré.

Country Status (3)

Country Link
US (1) US5392007A (fr)
FR (1) FR2718585B1 (fr)
GB (1) GB2288500B (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5710520A (en) * 1996-06-28 1998-01-20 Harris Corporation Pulse step modulator and transformer
GB2320149B (en) * 1996-12-06 2000-09-06 Gec Marconi Communications Lim Modulators
US6385439B1 (en) 1997-10-31 2002-05-07 Telefonaktiebolaget Lm Ericsson (Publ) Linear RF power amplifier with optically activated switches
US5903188A (en) * 1998-02-17 1999-05-11 Harris Corporation Modulator having improved discharging unwanted capacitance
US6236284B1 (en) * 2000-04-07 2001-05-22 Harris Corporation RF power amplifier system having distributed modulation encoding
US7526260B2 (en) * 2002-11-14 2009-04-28 M/A-Com Eurotec, B.V. Apparatus, methods and articles of manufacture for linear signal modification
US7245183B2 (en) 2002-11-14 2007-07-17 M/A-Com Eurotec Bv Apparatus, methods and articles of manufacture for processing an electromagnetic wave
US7254195B2 (en) * 2003-08-25 2007-08-07 M/A-Com, Inc. Apparatus, methods and articles of manufacture for dynamic differential delay correction
US6891432B2 (en) * 2002-11-14 2005-05-10 Mia-Com, Inc. Apparatus, methods and articles of manufacture for electromagnetic processing
US7502422B2 (en) * 2003-06-04 2009-03-10 M/A—COM, Inc. Electromagnetic wave transmitter systems, methods and articles of manufacture
US7343138B2 (en) * 2003-12-08 2008-03-11 M/A-Com, Inc. Compensating for load pull in electromagentic signal propagation using adaptive impedance matching
US7183958B2 (en) * 2004-09-08 2007-02-27 M/A-Com, Eurotec B.V. Sub-ranging digital to analog converter for radiofrequency amplification
US7154329B2 (en) * 2004-12-16 2006-12-26 M/A-Com, Inc. Method and apparatus for compensating amplifier output for temperature and process variations
US20060255997A1 (en) * 2005-04-08 2006-11-16 M/A-Com, Inc. And M/A-Com Eurotec Bv Differential analog filter
US7317412B2 (en) * 2006-05-15 2008-01-08 M/A-Com, Inc. Techniques for biasing a radio frequency digital to analog converter
US8155237B2 (en) * 2008-02-07 2012-04-10 Pine Valley Investments, Inc. Multi-carrier transmitter
CN101662222B (zh) * 2009-09-30 2012-01-04 华为技术有限公司 电源跟踪方法和装置
US8554158B2 (en) 2010-09-30 2013-10-08 St-Ericsson Sa Current saving by reduced modulation code and selective gating of RF signal

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4205241A (en) * 1979-03-13 1980-05-27 Fisher Charles B Quantized modulation systems
GB2064901B (en) * 1979-11-30 1984-11-07 Harris Corp Digital high power amplifier
US4580111A (en) * 1981-12-24 1986-04-01 Harris Corporation Amplitude modulation using digitally selected carrier amplifiers
US4804931A (en) * 1987-12-11 1989-02-14 Acrodyne Industries, Inc. Digital amplitude modulator - transmitter
US5132637A (en) * 1991-03-25 1992-07-21 Harris Corporation RF power amplifier system having improved distortion reduction
US5260674A (en) * 1992-08-04 1993-11-09 Acrodyne Industries, Inc. Amplitude modulator
US5309114A (en) * 1993-06-30 1994-05-03 Harris Corporation Pulse step modulator

Also Published As

Publication number Publication date
GB2288500A (en) 1995-10-18
GB2288500B (en) 1998-04-01
US5392007A (en) 1995-02-21
FR2718585A1 (fr) 1995-10-13
GB9507010D0 (en) 1995-05-31

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Legal Events

Date Code Title Description
ST Notification of lapse