FR1512093A - Modulateur-démodulateur de modulation de fréquence à bande latérale unique - Google Patents

Modulateur-démodulateur de modulation de fréquence à bande latérale unique

Info

Publication number
FR1512093A
FR1512093A FR8352A FR06008352A FR1512093A FR 1512093 A FR1512093 A FR 1512093A FR 8352 A FR8352 A FR 8352A FR 06008352 A FR06008352 A FR 06008352A FR 1512093 A FR1512093 A FR 1512093A
Authority
FR
France
Prior art keywords
demodulator
frequency modulation
single sideband
sideband frequency
modulation modulator
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
FR8352A
Other languages
English (en)
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of FR1512093A publication Critical patent/FR1512093A/fr
Expired 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/52—Modulators in which carrier or one sideband is wholly or partially suppressed
    • H03C1/54—Balanced modulators, e.g. bridge type, ring type or double balanced type
    • H03C1/542—Balanced modulators, e.g. bridge type, ring type or double balanced type comprising semiconductor devices with at least three electrodes
    • H03C1/545—Balanced modulators, e.g. bridge type, ring type or double balanced type comprising semiconductor devices with at least three electrodes using bipolar transistors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/002—Transmission systems not characterised by the medium used for transmission characterised by the use of a carrier modulation
    • H04B14/006—Angle modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Dc Digital Transmission (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
FR8352A 1966-03-03 1967-02-14 Modulateur-démodulateur de modulation de fréquence à bande latérale unique Expired FR1512093A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US53148866A 1966-03-03 1966-03-03

Publications (1)

Publication Number Publication Date
FR1512093A true FR1512093A (fr) 1968-02-02

Family

ID=24117842

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8352A Expired FR1512093A (fr) 1966-03-03 1967-02-14 Modulateur-démodulateur de modulation de fréquence à bande latérale unique

Country Status (4)

Country Link
US (1) US3466392A (fr)
DE (1) DE1512251C3 (fr)
FR (1) FR1512093A (fr)
GB (1) GB1107177A (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522372A (en) * 1967-11-13 1970-07-28 Ibm Frequency modulated signal switching with frequency divided output
US3643023A (en) * 1968-03-01 1972-02-15 Milgo Electronic Corp Differential phase modulator and demodulator utilizing relative phase differences at the center of the modulation periods
US3708752A (en) * 1969-12-19 1973-01-02 H Fein Asynchronous data transmission apparatus and method
US3627949A (en) * 1970-01-15 1971-12-14 Western Telematic Inc Digital data transmission system
US3668562A (en) * 1970-04-15 1972-06-06 Tel Tech Corp Frequency modulation system for transmitting binary information
US3699447A (en) * 1971-01-05 1972-10-17 Ibm Wideband frequency modulation communications system
US4652857A (en) * 1983-04-29 1987-03-24 Meiksin Zvi H Method and apparatus for transmitting wide-bandwidth frequency signals from mines and other power restricted environments
US4905003A (en) * 1987-07-24 1990-02-27 Richard J. Helferich Analog/digital data storage system
USRE37618E1 (en) 1987-07-24 2002-04-02 Richard J. Helferich Analog/digital data storage system
US4864301A (en) * 1987-07-24 1989-09-05 Richard J. Helferich Variable speed transmission recording and retrieval of data
US5003576A (en) * 1987-07-24 1991-03-26 Richard J. Helferich Analog/digital voice storage cellular telephone
USRE34976E (en) * 1987-07-24 1995-06-20 Richard J. Helferich Analog/digital voice storage cellular telephone

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3102238A (en) * 1961-11-13 1963-08-27 Collins Radio Co Encoder with one frequency indicating one binary logic state and another frequency indicating other state
GB985205A (en) * 1961-12-18 1965-03-03 British Telecomm Res Ltd Improvements in demodulator circuits for frequency modulated electrical signals
US3196352A (en) * 1962-12-18 1965-07-20 Ibm Multilevel vestigial sideband suppressed carrier data transmission system
US3288930A (en) * 1964-11-12 1966-11-29 Winston Res Corp Wide-band signal-translating channel
US3387213A (en) * 1965-02-23 1968-06-04 Automatic Elect Lab Synchronous frequency modulation duobinary processing of digital data

Also Published As

Publication number Publication date
US3466392A (en) 1969-09-09
DE1512251C3 (de) 1974-01-17
DE1512251A1 (de) 1969-05-22
GB1107177A (en) 1968-03-20
DE1512251B2 (de) 1973-06-28

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