DE69226318T2 - FSK-Demodulator mit direkter Umwandlung - Google Patents

FSK-Demodulator mit direkter Umwandlung

Info

Publication number
DE69226318T2
DE69226318T2 DE69226318T DE69226318T DE69226318T2 DE 69226318 T2 DE69226318 T2 DE 69226318T2 DE 69226318 T DE69226318 T DE 69226318T DE 69226318 T DE69226318 T DE 69226318T DE 69226318 T2 DE69226318 T2 DE 69226318T2
Authority
DE
Germany
Prior art keywords
direct conversion
fsk demodulator
fsk
demodulator
conversion
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 - Fee Related
Application number
DE69226318T
Other languages
English (en)
Other versions
DE69226318D1 (de
Inventor
Masahiro Mimura
Makoto Hasegawa
Kazunori Watanabe
Hiroyuki Harada
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE69226318D1 publication Critical patent/DE69226318D1/de
Publication of DE69226318T2 publication Critical patent/DE69226318T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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)
  • Superheterodyne Receivers (AREA)
DE69226318T 1991-09-27 1992-09-28 FSK-Demodulator mit direkter Umwandlung Expired - Fee Related DE69226318T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP24881991 1991-09-27
JP04202168A JP3087459B2 (ja) 1991-09-27 1992-07-29 Ｆｓｋデータ復調器

Publications (2)

Publication Number Publication Date
DE69226318D1 DE69226318D1 (de) 1998-08-27
DE69226318T2 true DE69226318T2 (de) 1999-01-21

Family

ID=26513222

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69226318T Expired - Fee Related DE69226318T2 (de) 1991-09-27 1992-09-28 FSK-Demodulator mit direkter Umwandlung

Country Status (4)

Country Link
US (1) US5309113A (de)
EP (1) EP0534486B1 (de)
JP (1) JP3087459B2 (de)
DE (1) DE69226318T2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0746217A (ja) * 1993-07-26 1995-02-14 Sony Corp ディジタル復調装置
US5418489A (en) * 1993-10-08 1995-05-23 Motorola, Inc. Method of recovering a frequency modulated signal
US5633898A (en) * 1993-12-22 1997-05-27 Matsushita Electric Industrial Co., Ltd. Automatic frequency control apparatus for FSK receiver and FSK receiver including the same
US5610947A (en) * 1994-10-14 1997-03-11 International Business Machines Corporation IR FM modem with flash modulation
CN1087120C (zh) * 1994-11-10 2002-07-03 松下电器产业株式会社 直接变频接收机
DE19654966C2 (de) * 1995-07-18 2002-04-18 Mitsubishi Electric Corp Digitaler Empfänger
JPH1117749A (ja) * 1997-06-24 1999-01-22 Nec Corp 復調回路
JP3676576B2 (ja) * 1998-07-17 2005-07-27 富士通株式会社 自動遅延等化器及び自動遅延等化方法並びに自動遅延・振幅等化器及び自動遅延・振幅等化方法
US6493396B1 (en) * 1999-01-11 2002-12-10 Tellabs Operations, Inc Phase shift key burst receiver having improved phase resolution and timing and data recovery
EP1170874A1 (de) * 2000-07-05 2002-01-09 Infineon Technologies AG Empfangseinrichtung, insbesondere für den Mobilfunk
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
US8590844B2 (en) * 2009-07-17 2013-11-26 Siemens Rail Auotmation Corporation Track circuit communications
US8500071B2 (en) 2009-10-27 2013-08-06 Invensys Rail Corporation Method and apparatus for bi-directional downstream adjacent crossing signaling
US8660215B2 (en) * 2010-03-16 2014-02-25 Siemens Rail Automation Corporation Decoding algorithm for frequency shift key communications

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2652451A (en) * 1951-03-16 1953-09-15 Lewis C Feten Overcoming elongation of pulses
US3439283A (en) * 1966-02-04 1969-04-15 Gen Electric Frequency shift keyed discriminating circuits
US3568067A (en) * 1969-06-13 1971-03-02 Collins Radio Co Frequency discriminator with output indicative of difference between input and local reference signals
GB2061647A (en) * 1979-10-26 1981-05-13 Emi Ltd Frequency demodulator
JPS59168752A (ja) * 1983-03-15 1984-09-22 Nec Corp 周波数検波装置
GB2143386B (en) * 1983-07-14 1987-01-14 Standard Telephones Cables Ltd Radio receiver
CH667170A5 (de) * 1984-12-07 1988-09-15 Industrieorientierte Forsch Verfahren zur detektion der information eines empfangssignales, insbesondere mit frequenzumtastung.
GB8914466D0 (en) * 1989-06-23 1989-08-09 Orbitel Mobile Communications Apparatus for and method of digitizing fsk demodulated data
JP2806997B2 (ja) * 1989-11-15 1998-09-30 株式会社日立製作所 復調器

Also Published As

Publication number Publication date
US5309113A (en) 1994-05-03
JPH05191463A (ja) 1993-07-30
EP0534486A2 (de) 1993-03-31
EP0534486B1 (de) 1998-07-22
EP0534486A3 (de) 1994-03-30
DE69226318D1 (de) 1998-08-27
JP3087459B2 (ja) 2000-09-11

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Legal Events

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