ES2155128T3 - Reduccion de interferencias procedentes de los osciladores en aparatos electronicos. - Google Patents

Reduccion de interferencias procedentes de los osciladores en aparatos electronicos.

Info

Publication number
ES2155128T3
ES2155128T3 ES95917690T ES95917690T ES2155128T3 ES 2155128 T3 ES2155128 T3 ES 2155128T3 ES 95917690 T ES95917690 T ES 95917690T ES 95917690 T ES95917690 T ES 95917690T ES 2155128 T3 ES2155128 T3 ES 2155128T3
Authority
ES
Spain
Prior art keywords
signal
interference
modulation
modulated
spectral
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
ES95917690T
Other languages
English (en)
Inventor
Karl B Lindall
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.)
Ericsson Inc
Original Assignee
Ericsson 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 Ericsson Inc filed Critical Ericsson Inc
Application granted granted Critical
Publication of ES2155128T3 publication Critical patent/ES2155128T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B15/00Suppression or limitation of noise or interference
    • H04B15/02Reducing interference from electric apparatus by means located at or near the interfering apparatus
    • H04B15/04Reducing 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B2215/00Reducing interference at the transmission system level
    • H04B2215/064Reduction of clock or synthesizer reference frequency harmonics

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

EN UN APARATO ELECTRONICO QUE INCLUYE UN OSCILADOR DE REFERENCIA Y UNA PARTE DE INTERFERENCIA QUE GENERA UNA SEÑAL DE INTERFERENCIA CON UN COMPONENTE ESPECTRAL DENTRO DE UN ANCHO DE BANDA RECEPTOR, SUMINISTRANDO EL OSCILADOR DE REFERENCIA UNA SEÑAL OSCILANTE DE REFERENCIA A LA PARTE DE INTERFERENCIA DE LA QUE LA SEÑAL OSCILANTE DE REFERENCIA SE DERIVA LA SEÑAL DE INTERFERENCIA, AMPLITUD DE LA SEÑAL DE INTERFERENCIA DENTRO DE UN ANCHO DE BANDA RECEPTOR QUE SE REDUCE MEDIANTE UN ANGULO QUE MODULA LA SEÑAL ONDULANTE DE REFERENCIA CON UN SEÑAL SINUSOIDAL PARA GENERAR UNA SEÑAL DE INTERFERENCIA MODULADA CON UNA AMPLITUD PORTADORA REDUCIDA Y BANDAS SECUNDARIAS DE MODULACION QUE SE ENCUENTRAN FUERA DEL ANCHO DE BANDA DEL RECEPTOR. LA SEÑAL DE INTERFERENCIA MODULADA EN ANGULO TIENE PREFERIBLEMENTE UN INDICE DE MODULACION ({BE}), QUE SE ACERCA A UNA SOLUCION DE LA ECUACION J{SUB,0}({BE})=0, DONDE J{SUB,0} ES UNA FUNCION BASSEL DEL PRIMER TIPO. LA MODULACION EN ANGULO PUEDE CONSEGUIRSE ALTERNATIVAMENTE MEDIANTE LA APLICACION DE LA MODULACION DE FRECUENCIA DIRECTA AL OSCILADOR DE REFERENCIA CON LA SEÑAL SINUSOIDAL PARA GENERAR UNA SEÑAL DE REFERENCIA MODULADA Y APLICAR DESPUES LA SEÑAL DE REFERENCIA MODULADA A LA PARTE DE INTERFERENCIA, O MEDIANTE LA MODULACION DE FASE DE LA SEÑAL OSCILANTE DE REFERENCIA CON LA SEÑAL SINUSOIDAL ANTES DE SUMINISTRARLA A LA PARTE DE INTERFERENCIA. DONDE LA SEÑAL DE INTERFERENCIA POSEE UN COMPONENTE ESPECTRAL DE INTERFERENCIA DENTRO DE UN ANCHO DE BANDA DE MEDICION. LA AMPLITUD DEL COMPONENTE ESPECTRAL DE INTERFERENCIA SE REDUCE UTILIZANDO UNA SEÑAL MODULADORA SIN RUIDO DETERMINISTICA, TAL COMO UNA SEÑAL MODULADORA DE FORMA DE ONDA DE DIENTE DE SIERRA, PARA MODULAR EN ANGULO UNA SEÑAL DE RELOJ DE LA QUE SE DERIVA LA SEÑAL DE INTERFERENCIA.
ES95917690T 1994-04-21 1995-04-20 Reduccion de interferencias procedentes de los osciladores en aparatos electronicos. Expired - Lifetime ES2155128T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23091694A 1994-04-21 1994-04-21

Publications (1)

Publication Number Publication Date
ES2155128T3 true ES2155128T3 (es) 2001-05-01

Family

ID=22867072

Family Applications (1)

Application Number Title Priority Date Filing Date
ES95917690T Expired - Lifetime ES2155128T3 (es) 1994-04-21 1995-04-20 Reduccion de interferencias procedentes de los osciladores en aparatos electronicos.

Country Status (15)

Country Link
US (1) US5812940A (es)
EP (1) EP0705505B1 (es)
JP (1) JPH09501815A (es)
KR (1) KR100357673B1 (es)
CN (1) CN1097897C (es)
AT (1) ATE198966T1 (es)
AU (1) AU695887B2 (es)
CA (1) CA2165772C (es)
DE (1) DE69519971D1 (es)
ES (1) ES2155128T3 (es)
FI (1) FI112750B (es)
MX (1) MX9600066A (es)
NO (1) NO313070B1 (es)
RU (1) RU2134482C1 (es)
WO (1) WO1995029542A1 (es)

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US5812590A (en) * 1996-02-28 1998-09-22 Motorola, Inc. Frequency spreading clock modulation
US5970399A (en) * 1995-11-22 1999-10-19 Telefonaktiebolaget Lm Ericsson Radio channel squelching systems
GB2311673B (en) * 1996-03-29 2000-10-04 Advanced Risc Mach Ltd Clocked electronic circuit
JPH1013260A (ja) * 1996-06-25 1998-01-16 Matsushita Electric Ind Co Ltd 信号処理回路
US6006071A (en) * 1998-01-12 1999-12-21 Intersil Corporation RF communications system operable in the presence of a repetitive interference source and related methods
KR100326200B1 (ko) 1999-04-12 2002-02-27 구본준, 론 위라하디락사 데이터 중계장치와 이를 이용한 액정패널 구동장치, 모니터 장치 및 표시장치의 구동방법
US6661852B1 (en) 1999-07-21 2003-12-09 Raytheon Company Apparatus and method for quadrature tuner error correction
US6640237B1 (en) 1999-07-27 2003-10-28 Raytheon Company Method and system for generating a trigonometric function
US6895046B1 (en) 1999-10-18 2005-05-17 Bae Systems Information And Electronic Systems Integration Inc. System and method of providing a spread spectrum pulse width modulator clock
US6590948B1 (en) 2000-03-17 2003-07-08 Raytheon Company Parallel asynchronous sample rate reducer
US6647075B1 (en) 2000-03-17 2003-11-11 Raytheon Company Digital tuner with optimized clock frequency and integrated parallel CIC filter and local oscillator
FR2809884B1 (fr) * 2000-05-31 2002-11-29 St Microelectronics Sa Dispositif pour reduire l'emission electromagnetique d'un circuit electronique
US6982707B2 (en) * 2002-03-14 2006-01-03 Genesis Microchip Inc. Method and apparatus utilizing direct digital synthesizer and spread spectrum techniques for reducing EMI in digital display devices
US7498871B2 (en) * 2006-04-19 2009-03-03 Sony Ericsson Mobile Communications Ab Spectrum spreaders including tunable filters and related devices and methods
US7508278B2 (en) * 2006-09-07 2009-03-24 Via Technologies, Inc. Asymmetry triangular frequency modulation profiles for spread spectrum clock generations
US8265562B2 (en) * 2008-03-12 2012-09-11 Qualcomm Incorporated Method and system to indicate a desired transmit power and soft power control in a wireless network
EP2408108A1 (en) * 2010-07-14 2012-01-18 Telefonaktiebolaget L M Ericsson AB (Publ) Clocking scheme for a wireless communication device
US9055595B2 (en) * 2011-02-15 2015-06-09 Telefonaktiebolaget L M Ericsson (Publ) Bandwidth-based configuration of measurement gaps
CN108663136A (zh) * 2018-07-16 2018-10-16 湖北工业大学 无源无线声表面波温度传感器抗干扰方法
DE102018215675B4 (de) * 2018-09-14 2022-10-06 Vega Grieshaber Kg Fremdstrahlungserkennung mit Gamma-Modulator
WO2020082311A1 (zh) * 2018-10-25 2020-04-30 Oppo广东移动通信有限公司 消除频率干扰的装置和方法

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US3354410A (en) * 1965-07-22 1967-11-21 Bell Telephone Labor Inc Method for reducing interference caused by electromagnetic radiation from clock controlled systems
US3496470A (en) * 1966-07-11 1970-02-17 Motorola Inc Frequency modulation transmitter with crystal filter interposed between class c frequency multipliers for noise reduction
US3617892A (en) * 1967-02-27 1971-11-02 Rca Corp Frequency modulation system for spreading radiated power
JPS51117813A (en) * 1975-04-09 1976-10-16 Shintou Denki Kk Transmitter to prevent radiation of abnormal electric wave
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US4466107A (en) * 1981-09-14 1984-08-14 The Microperipheral Corporation Data communication system
US4545072A (en) * 1982-02-22 1985-10-01 Motorola, Inc. Method and apparatus for eliminating interference due to spurious signals generated in synthesized receivers
US4507796A (en) * 1982-10-20 1985-03-26 Printronix, Inc. Electronic apparatus having low radio frequency interference from system clock signal
EP0163313A3 (en) * 1984-05-30 1986-10-01 Tektronix, Inc. Method and apparatus for spectral dispersion of the radiated energy from a digital system
US4745566A (en) * 1985-03-07 1988-05-17 Tektronix, Inc. Angle modulated waveform synthesizer
US4870699A (en) * 1986-03-26 1989-09-26 General Electric Company Method and apparatus for controlling the frequency of operation and at least one further variable operating parameter of a radio communications device
US4888788A (en) * 1986-11-20 1989-12-19 Matsushita Electric Industrial Co., Ltd. Transmitting and receiving systems
US4811425A (en) * 1987-01-09 1989-03-07 Itt Avionics, A Division Of Itt Corporation Apparatus for reducing the effects of local oscillator leakage in mixers employed in zero IF receivers
JPS6489823A (en) * 1987-09-30 1989-04-05 Toshiba Corp Control circuit for radio equipment
DE3802863A1 (de) * 1988-02-01 1989-08-10 Vdo Schindling Verfahren zum betrieb einer taktgesteuerten einrichtung und taktgesteuerte einrichtung
DE3823018A1 (de) * 1988-07-07 1990-01-11 Bosch Gmbh Robert Verfahren und vorrichtung zum entstoeren von mikroprozessor-schaltungen
DE3840498C1 (es) * 1988-12-01 1990-06-13 Rohde & Schwarz Gmbh & Co Kg, 8000 Muenchen, De
JPH02239309A (ja) * 1989-03-14 1990-09-21 Taiyo Musen Kk マイクロプロセッサの駆動方法
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Also Published As

Publication number Publication date
ATE198966T1 (de) 2001-02-15
FI112750B (fi) 2003-12-31
NO313070B1 (no) 2002-08-05
CA2165772A1 (en) 1995-11-02
EP0705505A1 (en) 1996-04-10
WO1995029542A1 (en) 1995-11-02
DE69519971D1 (de) 2001-03-01
AU2365395A (en) 1995-11-16
FI956122A0 (fi) 1995-12-19
KR100357673B1 (ko) 2003-03-10
MX9600066A (es) 1998-11-30
AU695887B2 (en) 1998-08-27
US5812940A (en) 1998-09-22
FI956122A7 (fi) 1996-02-08
JPH09501815A (ja) 1997-02-18
CN1097897C (zh) 2003-01-01
RU2134482C1 (ru) 1999-08-10
CA2165772C (en) 2004-04-13
NO955115D0 (no) 1995-12-15
KR960703293A (ko) 1996-06-19
CN1129050A (zh) 1996-08-14
NO955115L (no) 1996-02-13
EP0705505B1 (en) 2001-01-24

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