DE3265319D1 - A direct modulation fm demodulator - Google Patents

A direct modulation fm demodulator

Info

Publication number
DE3265319D1
DE3265319D1 DE8282200106T DE3265319T DE3265319D1 DE 3265319 D1 DE3265319 D1 DE 3265319D1 DE 8282200106 T DE8282200106 T DE 8282200106T DE 3265319 T DE3265319 T DE 3265319T DE 3265319 D1 DE3265319 D1 DE 3265319D1
Authority
DE
Germany
Prior art keywords
demodulator
direct modulation
modulation
direct
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
Application number
DE8282200106T
Other languages
English (en)
Inventor
Christopher Brian Marshall
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.)
Philips Electronics UK Ltd
Koninklijke Philips NV
Original Assignee
Philips Electronic and Associated Industries Ltd
Philips Gloeilampenfabrieken NV
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 Philips Electronic and Associated Industries Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Electronic and Associated Industries Ltd
Application granted granted Critical
Publication of DE3265319D1 publication Critical patent/DE3265319D1/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/22—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by means of active elements with more than two electrodes to which two signals are applied derived from the signal to be demodulated and having a phase difference related to the frequency deviation, e.g. phase detector
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
DE8282200106T 1981-02-20 1982-01-29 A direct modulation fm demodulator Expired DE3265319D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8105456A GB2094079A (en) 1981-02-20 1981-02-20 Fm demodulator

Publications (1)

Publication Number Publication Date
DE3265319D1 true DE3265319D1 (en) 1985-09-19

Family

ID=10519858

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8282200106T Expired DE3265319D1 (en) 1981-02-20 1982-01-29 A direct modulation fm demodulator

Country Status (8)

Country Link
US (1) US4488119A (de)
EP (1) EP0059000B1 (de)
JP (1) JPS57152708A (de)
AU (1) AU548502B2 (de)
CA (1) CA1184256A (de)
DE (1) DE3265319D1 (de)
DK (1) DK160029C (de)
GB (1) GB2094079A (de)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2106359B (en) * 1981-09-24 1985-07-03 Standard Telephones Cables Ltd Direct conversion radio receiver for fm signals
FR2538634B1 (fr) * 1982-12-24 1985-07-19 Int Standard Electric Corp Recepteur radio-electrique a conversion directe pour signaux modules en frequence
AT398148B (de) * 1984-07-25 1994-09-26 Sat Systeme Automatisierung Verfahren zur demodulation eines frequenzmodulierten signales und schaltungsanordnung zur durchführung des verfahrens
GB8528541D0 (en) * 1985-11-20 1985-12-24 Devon County Council Fm demodulator
GB2184304B (en) * 1985-12-12 1989-10-11 Rank Taylor Hobson Ltd Velocity measuring apparatus
US4980687A (en) * 1988-10-13 1990-12-25 Systron Donner Digital demodulator
JP2953365B2 (ja) * 1995-11-17 1999-09-27 日本電気株式会社 直交復調器
US6314279B1 (en) * 1998-06-29 2001-11-06 Philips Electronics North America Corporation Frequency offset image rejection
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
US6061551A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US7039372B1 (en) 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
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
US7209725B1 (en) 1999-01-22 2007-04-24 Parkervision, Inc Analog zero if FM decoder and embodiments thereof, such as the family radio service
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
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
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
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
US7454453B2 (en) 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
US6459333B1 (en) * 2001-02-05 2002-10-01 Motorola, Inc. Differentiate and divide FM demodulator
US6943847B2 (en) * 2001-08-31 2005-09-13 Texas Instruments Incorporated FM demodulator for SECAM decoder
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
CN1988397B (zh) * 2005-12-21 2011-05-25 上海贝岭股份有限公司 一种调频接收器及其解调方法
US7843627B2 (en) * 2008-11-26 2010-11-30 Agilent Technologies, Inc. Coherent demodulation with reduced latency adapted for use in scanning probe microscopes

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3101448A (en) * 1954-12-23 1963-08-20 Gen Electric Synchronous detector system
US3035231A (en) * 1959-01-16 1962-05-15 Gen Electric Frequency difference discriminator
US3250904A (en) * 1961-09-27 1966-05-10 Vasu George Phase-shift computer and control system
US3609555A (en) * 1967-07-19 1971-09-28 Ibm Digital fm receiver
US3500217A (en) * 1967-07-31 1970-03-10 Us Navy Frequency discriminator employing quadrature demodulation techniques
US3568067A (en) * 1969-06-13 1971-03-02 Collins Radio Co Frequency discriminator with output indicative of difference between input and local reference signals
US3569853A (en) * 1969-07-01 1971-03-09 Communications Satellite Corp Phase-lock loop with tangent function phase comparator
US3748590A (en) * 1972-04-14 1973-07-24 Singer Co Sine cosine frequency tracker
GB1556045A (en) * 1975-07-02 1979-11-21 Marconi Co Ltd Analogue phase sensitive detectors
GB1530602A (en) * 1975-10-14 1978-11-01 Standard Telephones Cables Ltd Demodulator for fm signals
HU175236B (hu) * 1977-01-10 1980-06-28 Hiradastech Ipari Kutato Sposob i ustrojstvo dlja prijoma i generacii chastotno-modulirovannykh signalov
JPS5389354A (en) * 1977-01-18 1978-08-05 Toshiba Corp Digital synchronous detector
US4253067A (en) * 1978-12-11 1981-02-24 Rockwell International Corporation Baseband differentially phase encoded radio signal detector
US4270221A (en) * 1979-10-17 1981-05-26 Rca Corporation Phaselocked receiver with orderwire channel
US4525862A (en) * 1980-07-02 1985-06-25 Motorola, Inc. Transform modulation system

Also Published As

Publication number Publication date
DK69482A (da) 1982-08-21
JPH0237721B2 (de) 1990-08-27
CA1184256A (en) 1985-03-19
DK160029B (da) 1991-01-14
EP0059000B1 (de) 1985-08-14
EP0059000A1 (de) 1982-09-01
JPS57152708A (en) 1982-09-21
GB2094079A (en) 1982-09-08
US4488119A (en) 1984-12-11
DK160029C (da) 1991-06-03
AU8061582A (en) 1982-08-26
AU548502B2 (en) 1985-12-12

Similar Documents

Publication Publication Date Title
DE3265319D1 (en) A direct modulation fm demodulator
AU551612B2 (en) Fm demodulator
GB2109201B (en) Direct modulation fm receiver
GB8411037D0 (en) Direct modulation fm data receivers
AU555532B2 (en) Fsk demodulator
AU555938B2 (en) Fm demodulator
GB8419088D0 (en) Fm demodulation
GB2107261B (en) A tyre
YU184983A (en) Demodulator
DE3169060D1 (en) Demodulator for a frequency-modulated signal
GB8528541D0 (en) Fm demodulator
EP0184018A3 (en) Demodulator for a digital receiver
AU4484585A (en) Fsk demodulator
GB2137836B (en) Fm demodulators
GB2079076B (en) Fm demodulators
EP0184805A3 (en) Demodulator
AU567649B2 (en) Fm demodulator
GB2159674B (en) A delta modulator/demodulator
GB2153635B (en) Psk demodulator
ZA833069B (en) Fm demodulator
GB2077533B (en) Demodulator
GB8414290D0 (en) Fm stereomultiplex demodulator
GB2087693B (en) B1-phase modulator/demodulator
GB8708663D0 (en) Fm demodulator
GB8312026D0 (en) Fm demodulator

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee