IT949184B - ULTRALINEAR BROADBAND FREQUENCY DISCRIMINATOR - Google Patents

ULTRALINEAR BROADBAND FREQUENCY DISCRIMINATOR

Info

Publication number
IT949184B
IT949184B IT6756972A IT6756972A IT949184B IT 949184 B IT949184 B IT 949184B IT 6756972 A IT6756972 A IT 6756972A IT 6756972 A IT6756972 A IT 6756972A IT 949184 B IT949184 B IT 949184B
Authority
IT
Italy
Prior art keywords
filter
phasemeter
frequency discriminator
frequency
input
Prior art date
Application number
IT6756972A
Other languages
Italian (it)
Original Assignee
Cit Alcatel
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 Cit Alcatel filed Critical Cit Alcatel
Application granted granted Critical
Publication of IT949184B publication Critical patent/IT949184B/en

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
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/06—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators
    • H03D3/14—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators by means of semiconductor devices having more than two electrodes
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/90—Pitch determination of speech 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Networks Using Active Elements (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
  • Filters And Equalizers (AREA)

Abstract

1314659 Frequency discriminator COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATION CIT-ALCATEL 24 Feb 1972 [24 Feb 1971] 8665/72 Heading H3A A frequency discriminator comprises a phasemeter 6 with a linear characteristic in the range 0 to 360 degrees connected to the input 1 directly and also via a second order symmetric filter 4, there being provided an amplifier 8, e.g. an integrating amplifier between the phasemeter output and a control input of the filter. The filter 4 may be an active filter whose tuned frequency is controlled by the control voltage applied via a control circuit 13. The control voltage also obtainable as an output at terminal 14 is a unidirectional voltage varying linearly with frequency. Voltage limiters 2, 5 may be placed in the input paths of the phasemeter.
IT6756972A 1971-02-24 1972-02-23 ULTRALINEAR BROADBAND FREQUENCY DISCRIMINATOR IT949184B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7106309A FR2126090B1 (en) 1971-02-24 1971-02-24

Publications (1)

Publication Number Publication Date
IT949184B true IT949184B (en) 1973-06-11

Family

ID=9072413

Family Applications (1)

Application Number Title Priority Date Filing Date
IT6756972A IT949184B (en) 1971-02-24 1972-02-23 ULTRALINEAR BROADBAND FREQUENCY DISCRIMINATOR

Country Status (7)

Country Link
BE (1) BE779472A (en)
DE (1) DE2207781A1 (en)
FR (1) FR2126090B1 (en)
GB (1) GB1314659A (en)
IT (1) IT949184B (en)
LU (1) LU64814A1 (en)
NL (1) NL7202352A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001217B (en) * 1977-07-15 1982-01-27 Victor Company Of Japan Phase tracked loop frequency demodulator
FR2485294A1 (en) * 1980-06-23 1981-12-24 Trt Telecom Radio Electr FREQUENCY DEMODULATOR USING A VARIABLE DELAY CIRCUIT WITH RECEIVED FREQUENCY

Also Published As

Publication number Publication date
LU64814A1 (en) 1972-12-05
FR2126090B1 (en) 1974-02-15
DE2207781A1 (en) 1972-08-31
NL7202352A (en) 1972-08-28
BE779472A (en) 1972-08-17
GB1314659A (en) 1973-04-26
FR2126090A1 (en) 1972-10-06

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