ATE381814T1 - Schaltungen und verfahren zur interferenz verminderung für schaltende schaltungen - Google Patents

Schaltungen und verfahren zur interferenz verminderung für schaltende schaltungen

Info

Publication number
ATE381814T1
ATE381814T1 AT01964656T AT01964656T ATE381814T1 AT E381814 T1 ATE381814 T1 AT E381814T1 AT 01964656 T AT01964656 T AT 01964656T AT 01964656 T AT01964656 T AT 01964656T AT E381814 T1 ATE381814 T1 AT E381814T1
Authority
AT
Austria
Prior art keywords
signal
frequency
pulse width
circuits
pattern rate
Prior art date
Application number
AT01964656T
Other languages
English (en)
Inventor
John Melanson
Original Assignee
Cirrus Logic 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 Cirrus Logic Inc filed Critical Cirrus Logic Inc
Application granted granted Critical
Publication of ATE381814T1 publication Critical patent/ATE381814T1/de

Links

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
    • H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements
    • 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
    • H03F3/2173—Class D power amplifiers; Switching amplifiers of the bridge type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
    • H04B15/04—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/294—Indexing scheme relating to amplifiers the amplifier being a low noise amplifier [LNA]
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/331—Sigma delta modulation being used in an amplifying circuit
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/372—Noise reduction and elimination in amplifier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2215/00—Reducing interference at the transmission system level
    • H04B2215/064—Reduction of clock or synthesizer reference frequency harmonics
    • H04B2215/065—Reduction of clock or synthesizer reference frequency harmonics by changing the frequency of clock or reference frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2215/00—Reducing interference at the transmission system level
    • H04B2215/069—Reduction of switch mode power supply ripple

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Noise Elimination (AREA)
  • Networks Using Active Elements (AREA)
AT01964656T 2000-08-30 2001-08-29 Schaltungen und verfahren zur interferenz verminderung für schaltende schaltungen ATE381814T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US65182100A 2000-08-30 2000-08-30

Publications (1)

Publication Number Publication Date
ATE381814T1 true ATE381814T1 (de) 2008-01-15

Family

ID=24614362

Family Applications (1)

Application Number Title Priority Date Filing Date
AT01964656T ATE381814T1 (de) 2000-08-30 2001-08-29 Schaltungen und verfahren zur interferenz verminderung für schaltende schaltungen

Country Status (9)

Country Link
US (2) US7010271B2 (de)
EP (1) EP1314256B1 (de)
JP (1) JP2004507967A (de)
AT (1) ATE381814T1 (de)
AU (1) AU2001285491A1 (de)
DE (1) DE60131989T2 (de)
DK (1) DK1314256T3 (de)
TW (1) TW519792B (de)
WO (1) WO2002019551A2 (de)

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US20070054650A1 (en) * 2003-11-14 2007-03-08 Koninklijke Philips Electronics N.V. Tuner-compatible switch mode power supply architecture
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JP2006173819A (ja) * 2004-12-14 2006-06-29 Sharp Corp スイッチングアンプ
US7474893B2 (en) * 2004-12-29 2009-01-06 Silicon Laboratories, Inc. System including a communication apparatus having a digital audio interface for audio testing with radio isolation
US7676197B2 (en) * 2005-06-30 2010-03-09 Intel Corporation Signal spectrum steering method, apparatus, and system
US7528586B2 (en) * 2005-12-21 2009-05-05 Honeywell International Inc. Harmonics related synchronization for switching regulators
US7649410B2 (en) * 2006-01-24 2010-01-19 D2Audio Corporation Systems and methods for improving performance in a digital amplifier by adding an ultrasonic signal to an input audio signal
FI20065457A0 (fi) * 2006-06-30 2006-06-30 Nokia Corp Tehovahvistimen kytkentätoimisen tehonsyötön kontrollointi
US8416880B2 (en) * 2008-03-31 2013-04-09 Nxp B.V. Digital modulator
CN102187558A (zh) * 2008-10-13 2011-09-14 皇家飞利浦电子股份有限公司 开关电源
US8294445B2 (en) * 2008-12-04 2012-10-23 Qualcomm Incorporated Switching voltage regulator with frequency selection
JP5202354B2 (ja) * 2009-01-22 2013-06-05 キヤノン株式会社 Ｄ級増幅装置
US8265303B2 (en) * 2009-03-11 2012-09-11 Pacifictech Microelectronics, Inc. Circuits and methods for reducing pop noise in class D amplifiers
TWI380580B (en) * 2009-08-20 2012-12-21 Richtek Technology Corp Variable frequency class-d amplifier and a control method thereof and a ramp generator for the variable freguency class-d amplifier and a method thereof
US8391512B2 (en) 2009-09-25 2013-03-05 Onkyo Corporation Broadcast wave receiving system
US8145149B2 (en) * 2010-06-17 2012-03-27 R2 Semiconductor, Inc Operating a voltage regulator at a switching frequency selected to reduce spurious signals
FR2978313B1 (fr) * 2011-07-18 2014-02-21 Thales Sa Procede pour preserver la sensibilite d'un equipement radiofrequence et equipement radiofrequence
JP6024175B2 (ja) * 2012-04-18 2016-11-09 富士電機株式会社 スイッチング電源装置
EP2712077A1 (de) * 2012-09-20 2014-03-26 Alcatel-Lucent Modulation
JP6089974B2 (ja) * 2013-05-30 2017-03-08 株式会社デンソー 電力線通信システム、マスタ及びスレーブ
TWI511426B (zh) 2013-08-30 2015-12-01 Anpec Electronics Corp 調變方法及其調變模組與電壓轉換裝置
US9837958B2 (en) * 2015-06-08 2017-12-05 Maxlinear, Inc. Crystal (xtal) oscillator with high interference immunity
JP6675888B2 (ja) * 2016-03-07 2020-04-08 エイブリック株式会社 デジタル無線送信装置
JP7067259B2 (ja) * 2018-05-18 2022-05-16 株式会社デンソー インバータ制御システム

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Also Published As

Publication number Publication date
US20040100328A1 (en) 2004-05-27
JP2004507967A (ja) 2004-03-11
EP1314256B1 (de) 2007-12-19
DE60131989D1 (de) 2008-01-31
AU2001285491A1 (en) 2002-03-13
DK1314256T3 (da) 2008-05-05
TW519792B (en) 2003-02-01
US7199744B1 (en) 2007-04-03
US7010271B2 (en) 2006-03-07
EP1314256A2 (de) 2003-05-28
WO2002019551A3 (en) 2002-08-15
WO2002019551A2 (en) 2002-03-07
DE60131989T2 (de) 2008-12-11

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