ES2095576T3 - Modulador m-ario de transmision por desplazamiento de frecuencia (fsk). - Google Patents

Modulador m-ario de transmision por desplazamiento de frecuencia (fsk).

Info

Publication number
ES2095576T3
ES2095576T3 ES93304908T ES93304908T ES2095576T3 ES 2095576 T3 ES2095576 T3 ES 2095576T3 ES 93304908 T ES93304908 T ES 93304908T ES 93304908 T ES93304908 T ES 93304908T ES 2095576 T3 ES2095576 T3 ES 2095576T3
Authority
ES
Spain
Prior art keywords
vco
modulator
characteristic
transitional
fsk
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
ES93304908T
Other languages
English (en)
Inventor
Takashi Matsuura
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of ES2095576T3 publication Critical patent/ES2095576T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/12—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/106—M-ary FSK

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

SE PRESENTA UN MODULADOR DE MANIPULACION POR DESPLAZAMIENTO DE FRECUENCIA (FSK) DE VARIOS NIVELES EN QUE LA RESPUESTA EN REGIMEN TRANSITORIO PARA UNA TRANSICION DE FRECUENCIA SE PUEDE ESTABLECER FACILMENTE. EL MODULADOR ES DEL TIPO EN QUE UNA FRECUENCIA GENERADA POR UN OSCILADOR DE REGULACION POR TENSION (VCO) CAMBIA SEGUN EL CODIGO DE MULTIPLE NIVEL Y SU FASE QUEDA SINCRONIZADA POR UN CIRCUITO DE SINCRONIZACION DE FASE (PLL). EL MODULADOR TIENE UN CIRCUITO DE REALIMENTACION DE SINCRONIZACION DE FASE QUE, COMBINADO CON UN VCO FORMA UN PLL, UN PRIMER Y SEGUNDO VCO (1,11) Y UN ELEMENTO FILTRANTE (12) QUE TIENE UNA CARACTERISTICA DE RESPUESTA EN REGIMEN TRANSITORIO DESEADA. EN UN PERIODO TRANSITORIO DE UNA TRANSICION DE FRECUENCIA DEBIDO A UN CAMBIO EN EL CODIGO DE MULTIPLES NIVELES, EL PRIMER VCO (1) PRODUCIDO EN EL PLL ES INTRODUCIDO COMO LA SEGUNDA TENSION DE REGULACION AL SEGUNDO VCO (11) A TRAVES DEL ELEMENTO FILTRANTE (12). SEGUN ESTO, LA SEÑAL DE FSK ENVIADA DESDE EL SEGUNDO VCO (11) TIENE UNA CARACTERISTICA DE RESPUESTA EN REGIMEN TRANSITORIO QUE DEPENDE DE LA CARACTERISTICA DEL ELEMENTO FILTRANTE (12) Y, COMO RESULTADO, LA CARACTERISTICA DE RESPUESTA EN REGIMEN TRANSITORIO DEL MODULADOR DE FSK SE PUEDE ESTABLECER EN UNA CARACTERISTICA DESEADA A BASE DE MODIFICAR LA CARACTERISTICA DEL ELEMENTO FILTRANTE (12) SIN CAMBIAR LOS OTROS PARAMETROS DEL CIRCUITO.
ES93304908T 1992-06-26 1993-06-23 Modulador m-ario de transmision por desplazamiento de frecuencia (fsk). Expired - Lifetime ES2095576T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4168107A JPH0614065A (ja) 1992-06-26 1992-06-26 多値ｆｓｋ変調器

Publications (1)

Publication Number Publication Date
ES2095576T3 true ES2095576T3 (es) 1997-02-16

Family

ID=15861982

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93304908T Expired - Lifetime ES2095576T3 (es) 1992-06-26 1993-06-23 Modulador m-ario de transmision por desplazamiento de frecuencia (fsk).

Country Status (4)

Country Link
US (1) US5329258A (es)
EP (1) EP0577323B1 (es)
JP (1) JPH0614065A (es)
ES (1) ES2095576T3 (es)

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JPH0830710B2 (ja) * 1990-03-08 1996-03-27 本田技研工業株式会社 角速度検出器
GB9421552D0 (en) * 1994-10-26 1994-12-14 Philips Electronics Uk Ltd Improvements in or relating to data communication
US5748679A (en) * 1995-04-28 1998-05-05 Trw Inc. Modulated clock MSK modulator for high data rate applications
KR100193812B1 (ko) * 1995-12-26 1999-06-15 윤종용 2레벨/4레벨 주파수 쉬프트키잉 변조방식 구현 회로
US5787115A (en) * 1995-12-28 1998-07-28 Northern Telecom Limited Key telephone system without common control
GB2320633B (en) * 1996-12-17 2000-12-27 Motorola Gmbh Frequency generating circuit and method of operation
US6236689B1 (en) * 1997-07-01 2001-05-22 U.S. Philips Corporation Device comprising a phase-locked loop, electronic apparatus comprising such a device and method of modulating the frequency of an oscillator
US6418174B1 (en) 1999-02-19 2002-07-09 Rf Micro Devices, Inc. Frequency shift key modulator
WO2000059170A1 (en) * 1999-03-30 2000-10-05 Nexus Telocation Systems, Ltd. Phase modulation technique for pulsed frequency shift keying circuits
DE10102995B4 (de) * 2001-01-24 2006-05-24 Robert Bosch Gmbh Datenbus für Rückhaltemittel in einem Fahrzeug
KR100416339B1 (ko) * 2001-05-23 2004-01-31 (주)맥서스테크놀로지스 위상동기 루프회로를 가지는 주파수전이 키잉방식의 이동통신 중계기용 무선통신 모뎀
US7200184B2 (en) * 2002-05-30 2007-04-03 Motorola, Inc. Data dithering apparatus and method
US7043222B2 (en) * 2003-09-02 2006-05-09 Standard Microsystems Corporation FSK modulator using IQ up-mixers and sinewave coded DACs
WO2005071828A1 (en) * 2004-01-22 2005-08-04 The Regents Of The University Of Michigan Demodulatr, chip and method for digitally demodulating an fsk signal
US8327204B2 (en) * 2005-10-27 2012-12-04 Dft Microsystems, Inc. High-speed transceiver tester incorporating jitter injection
JP2007221773A (ja) * 2006-01-19 2007-08-30 Matsushita Electric Ind Co Ltd Ｐｌｌ変調回路、無線送信装置及び無線通信装置
JP4480097B2 (ja) * 2006-03-07 2010-06-16 パナソニック株式会社 周波数シンセサイザ、無線通信システム、及び半導体装置
US7813297B2 (en) * 2006-07-14 2010-10-12 Dft Microsystems, Inc. High-speed signal testing system having oscilloscope functionality
TW200821589A (en) * 2006-07-14 2008-05-16 Dft Microsystems Inc Signal integrity measurement systems and methods using a predominantly digital time-base generator
US7681091B2 (en) 2006-07-14 2010-03-16 Dft Microsystems, Inc. Signal integrity measurement systems and methods using a predominantly digital time-base generator
US7917319B2 (en) * 2008-02-06 2011-03-29 Dft Microsystems Inc. Systems and methods for testing and diagnosing delay faults and for parametric testing in digital circuits
US11563607B2 (en) * 2019-09-24 2023-01-24 Forkbeard Technologies AS Orthogonal frequency scheme for narrowband acoustic signaling

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4068198A (en) * 1976-12-23 1978-01-10 Gte Sylvania Incorporated Phase-locked loop frequency shift key modulator
JPS57135555A (en) * 1981-02-16 1982-08-21 Nippon Telegr & Teleph Corp <Ntt> Phase continuous fsk modulating circuit
FR2535545B1 (fr) * 1982-10-29 1989-08-04 Thomson Csf Synthetiseur a temps d'acquisition rapide de frequence et systeme de transmission radioelectrique a saut de frequence comportant un tel synthetiseur
US5111162A (en) * 1991-05-03 1992-05-05 Motorola, Inc. Digital frequency synthesizer having AFC and modulation applied to frequency divider
US5130676A (en) * 1991-09-06 1992-07-14 Motorola, Inc. Phase locked loop frequency synthesizer with DC data modulation capability

Also Published As

Publication number Publication date
JPH0614065A (ja) 1994-01-21
EP0577323B1 (en) 1996-12-11
EP0577323A1 (en) 1994-01-05
US5329258A (en) 1994-07-12

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