ZA793274B - Digital demodulator for phase shift keyed signals - Google Patents

Digital demodulator for phase shift keyed signals

Info

Publication number
ZA793274B
ZA793274B ZA793274A ZA793274A ZA793274B ZA 793274 B ZA793274 B ZA 793274B ZA 793274 A ZA793274 A ZA 793274A ZA 793274 A ZA793274 A ZA 793274A ZA 793274 B ZA793274 B ZA 793274B
Authority
ZA
South Africa
Prior art keywords
phase shift
digital demodulator
shift keyed
keyed signals
signals
Prior art date
Application number
ZA793274A
Other languages
English (en)
Inventor
S Levine
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Publication of ZA793274B publication Critical patent/ZA793274B/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2335—Demodulator circuits; Receiver circuits using non-coherent demodulation using temporal properties of the received signal
    • H04L27/2337—Demodulator circuits; Receiver circuits using non-coherent demodulation using temporal properties of the received signal using digital techniques to measure the time between zero-crossings

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
ZA793274A 1978-08-17 1979-07-02 Digital demodulator for phase shift keyed signals ZA793274B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/934,299 US4190802A (en) 1978-08-17 1978-08-17 Digital demodulator for phase shift keyed signals

Publications (1)

Publication Number Publication Date
ZA793274B true ZA793274B (en) 1980-07-30

Family

ID=25465323

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA793274A ZA793274B (en) 1978-08-17 1979-07-02 Digital demodulator for phase shift keyed signals

Country Status (11)

Country Link
US (1) US4190802A (de)
EP (1) EP0008491B1 (de)
JP (1) JPS5527799A (de)
AR (1) AR226820A1 (de)
AU (1) AU522842B2 (de)
BR (1) BR7905274A (de)
CA (1) CA1120559A (de)
DE (1) DE2963403D1 (de)
IL (1) IL57725A (de)
MX (1) MX148812A (de)
ZA (1) ZA793274B (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4311964A (en) * 1979-09-21 1982-01-19 Westinghouse Electric Corp. Coherent phase shift keyed demodulator for power line communication systems
US4485347A (en) * 1980-09-04 1984-11-27 Mitsubishi Denki Kabushiki Kaisha Digital FSK demodulator
US4457005A (en) * 1981-12-07 1984-06-26 Motorola, Inc. Digital coherent PSK demodulator and detector
US4514697A (en) * 1983-02-09 1985-04-30 Westinghouse Electric Corp. Coherent phase shift keyed demodulator with improved sampling apparatus and method
US4516079A (en) * 1983-02-09 1985-05-07 Westinghouse Electric Corp. Coherent phase shift keyed demodulator for power line communication systems
US4555667A (en) * 1983-09-26 1985-11-26 Rixon, Inc. Synchronous digital QPSK demodulator with carrier error correction
US4653072A (en) * 1984-06-28 1987-03-24 Westinghouse Electric Corp. Low error rate digital demodulator
US4644561A (en) * 1985-03-20 1987-02-17 International Mobile Machines Corp. Modem for RF subscriber telephone system
JPS6231238A (ja) * 1985-08-02 1987-02-10 Canon Inc 復調装置
US4779054A (en) * 1987-08-17 1988-10-18 General Electric Company Digital inphase/quadrature product detector
JPH04172040A (ja) * 1990-11-05 1992-06-19 Matsushita Electric Ind Co Ltd 周波数オフセット補正付遅延検波回路
BR9205536A (pt) * 1991-12-13 1994-04-19 Motorola Inc Aparelho de digitalizacao de fase direta aparelho de desmodulacao de fase e processo de digitalizar diretamente a fase
JP2837982B2 (ja) * 1991-12-27 1998-12-16 三菱電機株式会社 遅延検波復調装置
FI925870A (fi) * 1991-12-27 1993-06-28 Mitsubishi Electric Corp Demodulator med foerdroejd detektering
US5537442A (en) * 1993-01-22 1996-07-16 Oki Electric Industry Co., Ltd. Instantaneous phase detecting circuit and clock recovery signal generating circuit incorporated in differential demodulator
US5436589A (en) * 1994-01-31 1995-07-25 Motorola, Inc. Demodulator for frequency shift keyed signals
US6097768A (en) * 1996-11-21 2000-08-01 Dps Group, Inc. Phase detector for carrier recovery in a DQPSK receiver
US6556326B2 (en) * 1996-12-20 2003-04-29 Tyco Telecommunications (Us) Inc. Synchronous amplitude modulation for improved performance of optical transmission systems
US20040161245A1 (en) * 1996-12-20 2004-08-19 Bergano Neal S. Synchronous amplitude modulation for improved performance of optical transmission systems
US11271566B2 (en) * 2018-12-14 2022-03-08 Integrated Device Technology, Inc. Digital logic compatible inputs in compound semiconductor circuits
US11221980B2 (en) 2019-10-31 2022-01-11 Sigmasense, Llc. Low voltage drive circuit operable to convey data via a bus

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3368036A (en) * 1965-05-24 1968-02-06 Collins Radio Co Demultiplexing and detecting system for predicted wave phasepulsed data transmissionsystem
DE1766622B1 (de) * 1967-07-07 1971-10-21 Fujitsu Ltd Frequenzvielfachempfaenger fuer differential phasenmodulierte signale
US3493884A (en) * 1968-06-03 1970-02-03 Us Army Phase shift system incorporating an integrator
US3590381A (en) * 1969-03-17 1971-06-29 Int Communications Corp Digital differential angle demodulator
US3586776A (en) * 1969-04-16 1971-06-22 Motorola Inc Digital communication synchronization system including synchronization signal termination recognition means
FR2225881B1 (de) * 1973-04-16 1976-04-23 Lannionnais Electronique
DE2354718C3 (de) * 1973-11-02 1981-12-17 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Demodulationsverfahren für phasenumgetastete Schwingungen und Schaltungsanordnung zur Durchführung des Verfahrens
US3943448A (en) * 1974-09-11 1976-03-09 Hycom Incorporated Apparatus and method for synchronizing a digital modem using a random multilevel data signal
US3980824A (en) * 1974-10-29 1976-09-14 Motorola, Inc. Modulator demodulator for binary digitally encoded messages
US3997847A (en) * 1975-10-29 1976-12-14 Bell Telephone Laboratories, Incorporated Digital demodulator for differentially encoded phase-shift-keyed data
US3993956A (en) * 1975-11-03 1976-11-23 Motorola, Inc. Digital detection system for differential phase shift keyed signals
US4105975A (en) * 1977-02-01 1978-08-08 Ncr Corporation Offset correction circuit for phase detectors
DE2838228B2 (de) * 1977-09-06 1981-03-26 Motorola, Inc., Schaumburg, Ill. Verfahren zum Synchronisieren einer Datenbitfolge

Also Published As

Publication number Publication date
AU4918779A (en) 1980-02-21
DE2963403D1 (en) 1982-09-16
CA1120559A (en) 1982-03-23
JPS5527799A (en) 1980-02-28
IL57725A (en) 1982-04-30
US4190802A (en) 1980-02-26
EP0008491B1 (de) 1982-07-28
AR226820A1 (es) 1982-08-31
AU522842B2 (en) 1982-07-01
EP0008491A1 (de) 1980-03-05
BR7905274A (pt) 1980-05-06
IL57725A0 (en) 1979-11-30
MX148812A (es) 1983-06-22

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