ES2033438T3 - Discriminador para manipulacion por desplazamiento de frecuencia. - Google Patents

Discriminador para manipulacion por desplazamiento de frecuencia.

Info

Publication number
ES2033438T3
ES2033438T3 ES198888307727T ES88307727T ES2033438T3 ES 2033438 T3 ES2033438 T3 ES 2033438T3 ES 198888307727 T ES198888307727 T ES 198888307727T ES 88307727 T ES88307727 T ES 88307727T ES 2033438 T3 ES2033438 T3 ES 2033438T3
Authority
ES
Spain
Prior art keywords
filters
pair
discriminator
impulse response
accepting
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
ES198888307727T
Other languages
English (en)
Inventor
Patrick Michael Hughes
Martin Christopher Hall
Larry Frederick Lind
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
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 British Telecommunications PLC filed Critical British Telecommunications PLC
Application granted granted Critical
Publication of ES2033438T3 publication Critical patent/ES2033438T3/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
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
    • H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
    • H04L27/1525—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements using quadrature demodulation

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Vending Machines For Individual Products (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Eye Examination Apparatus (AREA)

Abstract

LAS SALIDAS DE DOS CANALES DE FILTRO PARA ACEPTAR DOS FRECUENCIAS MODULADAS SE COMPARAN PARA PRODUCIR LA SALIDA. CADA CANAL UTILIZA FILTROS TRANSVERSALES DE RESPUESTA DE IMPULSO FINITA, PREFERENTEMENTE CON UNA RESPUESTA DE IMPULSO DE DURACION COMPARABLE AL PERIODO SIMBOLICO DE LA SEÑAL DE ENTRADA. CADA CANAL TIENE UN PAR DE FILTROS PARA ACEPTRA COMPONENTES DE CUADRATURA DE FASE (O, ALTERNATIVAMENTE, DESMODULADORES SINCRONOS DE CUADRATURA SEGUIDOS POR FILTROS): LOS COEFICIENTES DE FILTRO DIFIEREN DE LOS SINUSOIDALES MEDIANTE (O, EN EL CASO ALTERNATIVO, SE FORMAN POR) UNA FUNCION DE MODIFICACION QUE ES LA MISMA PARA AMBOS FILTROS DEL PAR.
ES198888307727T 1987-08-21 1988-08-19 Discriminador para manipulacion por desplazamiento de frecuencia. Expired - Lifetime ES2033438T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878719849A GB8719849D0 (en) 1987-08-21 1987-08-21 Fsk discriminator

Publications (1)

Publication Number Publication Date
ES2033438T3 true ES2033438T3 (es) 1993-03-16

Family

ID=10622647

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198888307727T Expired - Lifetime ES2033438T3 (es) 1987-08-21 1988-08-19 Discriminador para manipulacion por desplazamiento de frecuencia.

Country Status (14)

Country Link
US (1) US5065409A (es)
EP (1) EP0305125B1 (es)
JP (1) JP2910855B2 (es)
AT (1) ATE77188T1 (es)
AU (1) AU615475B2 (es)
CA (1) CA1336445C (es)
DE (1) DE3871880T2 (es)
DK (1) DK194489A (es)
ES (1) ES2033438T3 (es)
GB (1) GB8719849D0 (es)
GR (1) GR3005339T3 (es)
HK (1) HK129096A (es)
IE (1) IE61886B1 (es)
WO (1) WO1989001726A1 (es)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4234337C1 (de) * 1992-10-12 1993-12-23 Ant Nachrichtentech Demodulator für FSK-Signale
DE4234336C1 (de) * 1992-10-12 1993-10-21 Ant Nachrichtentech Demodulator für FSK-Signale
DE19614979C2 (de) 1995-04-20 2001-05-17 Fujitsu Ltd Hochfrequenz-Sende-Empfangs-Vorrichtung zur Datenkommunikation
US5748036A (en) * 1996-07-30 1998-05-05 United Microelectronics Corporation Non-coherent digital FSK demodulator
US7515896B1 (en) 1998-10-21 2009-04-07 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships
US6091940A (en) 1998-10-21 2000-07-18 Parkervision, Inc. Method and system for frequency up-conversion
US6694128B1 (en) 1998-08-18 2004-02-17 Parkervision, Inc. Frequency synthesizer using universal frequency translation technology
US6061551A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
US6542722B1 (en) 1998-10-21 2003-04-01 Parkervision, Inc. Method and system for frequency up-conversion with variety of transmitter configurations
US6061555A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for ensuring reception of a communications signal
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US6813485B2 (en) 1998-10-21 2004-11-02 Parkervision, Inc. Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same
US6560301B1 (en) 1998-10-21 2003-05-06 Parkervision, Inc. Integrated frequency translation and selectivity with a variety of filter embodiments
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US6049706A (en) 1998-10-21 2000-04-11 Parkervision, Inc. Integrated frequency translation and selectivity
US7039372B1 (en) 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
EP1014637B1 (fr) 1998-12-23 2006-05-03 Asulab S.A. Récepteur à conversion directe pour signaux modulés en sauts de fréquence (FSK)
US6704558B1 (en) 1999-01-22 2004-03-09 Parkervision, Inc. Image-reject down-converter and embodiments thereof, such as the family radio service
US6704549B1 (en) 1999-03-03 2004-03-09 Parkvision, Inc. Multi-mode, multi-band communication system
US6879817B1 (en) 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
US6853690B1 (en) 1999-04-16 2005-02-08 Parkervision, Inc. Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments
US7693230B2 (en) 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
US7110444B1 (en) 1999-08-04 2006-09-19 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations
US6785347B1 (en) * 1999-04-22 2004-08-31 3Com Corporation Nonlinear-least squares based method and apparatus for FSK signal decoding
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
US7010286B2 (en) 2000-04-14 2006-03-07 Parkervision, Inc. Apparatus, system, and method for down-converting and up-converting electromagnetic signals
FR2815211A1 (fr) * 2000-10-11 2002-04-12 Satellite Terminal Access Dispositif de filtrage a reponse impulsionnelle finie a coefficients periodiques
US7454453B2 (en) 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
US7072427B2 (en) 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US7460584B2 (en) 2002-07-18 2008-12-02 Parkervision, Inc. Networking methods and systems
US7379883B2 (en) 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems
US7672356B2 (en) 2005-05-19 2010-03-02 Itt Manufacturing Enterprises, Inc. Method and apparatus for detection of a frequency coded sequence in the presence of sinusoidal interference
EP2469783B1 (fr) * 2010-12-23 2017-12-13 The Swatch Group Research and Development Ltd. Récepteur de signaux radiofréquences FSK avec un démodulateur à haute sensibilité ainsi que procédé pour sa mise en action
US11515863B2 (en) * 2021-03-08 2022-11-29 Rohde & Schwarz Gmbh & Co. Kg Comb signal generator and method of providing a phase and amplitude reference

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3803501A (en) * 1972-11-17 1974-04-09 Ibm Frequency discriminator using digital non-recursive filters
US4437068A (en) * 1981-02-19 1984-03-13 Thomson-Csf FSK Demodulator for frequency-modulation modem
US4479092A (en) * 1981-11-20 1984-10-23 At&T Bell Laboratories Digital frequency-shift keyed demodulator
US4475219A (en) * 1982-08-18 1984-10-02 General Electric Company Demodulator for frequency-shift-keyed binary data signals
US4568882A (en) * 1984-10-01 1986-02-04 National Semiconductor Corporation Digital FSK demodulator circuit
ATE56573T1 (de) * 1985-07-03 1990-09-15 Siemens Ag Digitale filterweiche, insbesondere fuer einen datenempfaenger.
US4755761A (en) * 1986-06-26 1988-07-05 General Electric Company Zero intermediate-frequency demodulator

Also Published As

Publication number Publication date
GR3005339T3 (es) 1993-05-24
AU615475B2 (en) 1991-10-03
DK194489D0 (da) 1989-04-20
GB8719849D0 (en) 1987-09-30
IE882558L (en) 1989-02-21
IE61886B1 (en) 1994-11-30
HK129096A (en) 1996-07-26
EP0305125B1 (en) 1992-06-10
CA1336445C (en) 1995-07-25
AU2256988A (en) 1989-03-09
DE3871880D1 (de) 1992-07-16
JPH02501181A (ja) 1990-04-19
ATE77188T1 (de) 1992-06-15
JP2910855B2 (ja) 1999-06-23
DK194489A (da) 1989-04-20
EP0305125A1 (en) 1989-03-01
US5065409A (en) 1991-11-12
WO1989001726A1 (en) 1989-02-23
DE3871880T2 (de) 1993-01-14

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