DE10393487B3 - Correction of signal distortions in amplifier unit, operates pulse width modulator using variable frequency system clock - Google Patents

Correction of signal distortions in amplifier unit, operates pulse width modulator using variable frequency system clock Download PDF

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Publication number
DE10393487B3
DE10393487B3 DE10393487A DE10393487A DE10393487B3 DE 10393487 B3 DE10393487 B3 DE 10393487B3 DE 10393487 A DE10393487 A DE 10393487A DE 10393487 A DE10393487 A DE 10393487A DE 10393487 B3 DE10393487 B3 DE 10393487B3
Authority
DE
Germany
Prior art keywords
pulse width
system clock
variable frequency
correction
width modulator
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 - Lifetime
Application number
DE10393487A
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German (de)
Inventor
Christian Kranz
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.)
Apple Inc
Original Assignee
Infineon Technologies AG
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
Priority claimed from DE10255352A external-priority patent/DE10255352B3/en
Application filed by Infineon Technologies AG filed Critical Infineon Technologies AG
Priority to DE10393487A priority Critical patent/DE10393487B3/en
Application granted granted Critical
Publication of DE10393487B3 publication Critical patent/DE10393487B3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/351—Pulse width modulation being used in an amplifying circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)

Abstract

A digital pulse width modulator (17) (PWM) is operated using a variable frequency system clock (18) : An independent claim is included for corresponding equipment.
DE10393487A 2002-11-27 2003-10-28 Correction of signal distortions in amplifier unit, operates pulse width modulator using variable frequency system clock Expired - Lifetime DE10393487B3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10393487A DE10393487B3 (en) 2002-11-27 2003-10-28 Correction of signal distortions in amplifier unit, operates pulse width modulator using variable frequency system clock

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10255352A DE10255352B3 (en) 2002-11-27 2002-11-27 Correction of signal distortions in amplifier unit, operates pulse width modulator using variable frequency system clock
PCT/EP2003/011954 WO2004049560A1 (en) 2002-11-27 2003-10-28 Method and device for correcting signal distortions in an amplifier device
DE10393487A DE10393487B3 (en) 2002-11-27 2003-10-28 Correction of signal distortions in amplifier unit, operates pulse width modulator using variable frequency system clock

Publications (1)

Publication Number Publication Date
DE10393487B3 true DE10393487B3 (en) 2007-05-16

Family

ID=37982886

Family Applications (1)

Application Number Title Priority Date Filing Date
DE10393487A Expired - Lifetime DE10393487B3 (en) 2002-11-27 2003-10-28 Correction of signal distortions in amplifier unit, operates pulse width modulator using variable frequency system clock

Country Status (1)

Country Link
DE (1) DE10393487B3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3595332A1 (en) * 2018-07-12 2020-01-15 Usound GmbH Audio signal processing device for piezoelectric loudspeaker

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998044626A2 (en) * 1997-04-02 1998-10-08 Karsten Nielsen Pulse referenced control method for enhanced power amplification of a pulse modulated signal
WO1999045641A1 (en) * 1998-03-03 1999-09-10 Toccata Technology Aps A method in the compensation of unlinearities in an amplifier, an amplifier, and uses of the method and the amplifier
WO2000046919A2 (en) * 1999-02-05 2000-08-10 Texas Instruments, Copenhagen Aps A circuit for compensating noise and errors from an output stage of a digital amplifier
US6124757A (en) * 1996-11-06 2000-09-26 Harman International Industries Limited Amplifiers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6124757A (en) * 1996-11-06 2000-09-26 Harman International Industries Limited Amplifiers
WO1998044626A2 (en) * 1997-04-02 1998-10-08 Karsten Nielsen Pulse referenced control method for enhanced power amplification of a pulse modulated signal
WO1999045641A1 (en) * 1998-03-03 1999-09-10 Toccata Technology Aps A method in the compensation of unlinearities in an amplifier, an amplifier, and uses of the method and the amplifier
WO2000046919A2 (en) * 1999-02-05 2000-08-10 Texas Instruments, Copenhagen Aps A circuit for compensating noise and errors from an output stage of a digital amplifier

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Logan, S., Hawksford, M.O.J.: Linearization of class D output stages for high-performance audio power amplifiers. In: Advanced A-D Conversion Techniques and their Applications, 1994. Second International Conference on, 6-8 July 1994, S.136 -141 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3595332A1 (en) * 2018-07-12 2020-01-15 Usound GmbH Audio signal processing device for piezoelectric loudspeaker
US10812905B2 (en) 2018-07-12 2020-10-20 USound GmbH Device for audio signal processing for a piezoelectric speaker

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R081 Change of applicant/patentee

Owner name: INTEL DEUTSCHLAND GMBH, DE

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Effective date: 20130326

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Owner name: INTEL DEUTSCHLAND GMBH, DE

Free format text: FORMER OWNER: INTEL MOBILE COMMUNICATIONS GMBH, 85579 NEUBIBERG, DE

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Owner name: INTEL MOBILE COMMUNICATIONS GMBH, DE

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Effective date: 20130315

Owner name: INTEL MOBILE COMMUNICATIONS GMBH, DE

Free format text: FORMER OWNER: INTEL MOBILE COMMUNICATIONS TECHNOLOGY GMBH, 85579 NEUBIBERG, DE

Effective date: 20130326

Owner name: INTEL MOBILE COMMUNICATIONS GMBH, DE

Free format text: FORMER OWNER: INFINEON TECHNOLOGIES AG, 81669 MUENCHEN, DE

Effective date: 20130314

Owner name: INTEL MOBILE COMMUNICATIONS GMBH, DE

Free format text: FORMER OWNER: INFINEON TECHNOLOGIES AG, 85579 NEUBIBERG, DE

Effective date: 20130315

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Free format text: FORMER OWNER: INTEL MOBILE COMMUNICATIONS GMBH, 85579 NEUBIBERG, DE

R081 Change of applicant/patentee

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R071 Expiry of right