ZA732507B - Device for determining in a signal the presence of a given frequency - Google Patents

Device for determining in a signal the presence of a given frequency

Info

Publication number
ZA732507B
ZA732507B ZA732507A ZA732507A ZA732507B ZA 732507 B ZA732507 B ZA 732507B ZA 732507 A ZA732507 A ZA 732507A ZA 732507 A ZA732507 A ZA 732507A ZA 732507 B ZA732507 B ZA 732507B
Authority
ZA
South Africa
Prior art keywords
determining
signal
given frequency
frequency
given
Prior art date
Application number
ZA732507A
Other languages
English (en)
Inventor
C Clarisse
Original Assignee
Dassault Electronique
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 Dassault Electronique filed Critical Dassault Electronique
Publication of ZA732507B publication Critical patent/ZA732507B/xx

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
    • H03D3/04—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by counting or integrating cycles of oscillations

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
  • Manipulation Of Pulses (AREA)
ZA732507A 1972-04-11 1973-04-11 Device for determining in a signal the presence of a given frequency ZA732507B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7212651A FR2179536B1 (fr) 1972-04-11 1972-04-11

Publications (1)

Publication Number Publication Date
ZA732507B true ZA732507B (en) 1974-02-27

Family

ID=9096666

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA732507A ZA732507B (en) 1972-04-11 1973-04-11 Device for determining in a signal the presence of a given frequency

Country Status (11)

Country Link
US (1) US3820021A (fr)
BE (1) BE798065A (fr)
CA (1) CA977033A (fr)
CH (1) CH573122A5 (fr)
ES (1) ES413585A1 (fr)
FR (1) FR2179536B1 (fr)
GB (1) GB1423565A (fr)
IT (1) IT982756B (fr)
NL (1) NL7305090A (fr)
SE (1) SE385620B (fr)
ZA (1) ZA732507B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2241930B1 (fr) * 1973-08-23 1976-06-18 Alsthom Cgee
US4021653A (en) * 1975-10-14 1977-05-03 Motorola, Inc. Digital programmable tone detector
NL170797C (nl) * 1975-11-18 1982-12-16 Nederlanden Staat Inrichting voor het detecteren van een signaal.
US4181967A (en) * 1978-07-18 1980-01-01 Motorola, Inc. Digital apparatus approximating multiplication of analog signal by sine wave signal and method
US4504786A (en) * 1982-06-14 1985-03-12 Slaughter Grimes G Signal detector
US4707653A (en) * 1985-10-17 1987-11-17 Ampex Corporation Frequency measurement circuit
FR2685990A1 (fr) * 1992-01-02 1993-07-09 Sgs Thomson Microelectronics Detecteur de verrouillage d'une boucle a verrouillage de phase.
GB2346292B (en) * 1999-01-30 2003-06-11 Motorola Ltd Voltage standing-wave ratio measurement apparatus and use in a cellular communications system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1638582C3 (de) * 1967-06-20 1973-11-15 Siemens Ag, 1000 Berlin U. 8000 Muenchen Schaltungsanordnung zum Erzeugen eines Signales bei zwischen zwei Wechselspannungen auftretenden Frequenz unterschieden

Also Published As

Publication number Publication date
DE2318026A1 (de) 1973-10-31
ES413585A1 (es) 1976-01-16
CA977033A (en) 1975-10-28
BE798065A (fr) 1973-10-11
CH573122A5 (fr) 1976-02-27
US3820021A (en) 1974-06-25
SE385620B (sv) 1976-07-12
DE2318026B2 (de) 1976-04-01
FR2179536A1 (fr) 1973-11-23
GB1423565A (en) 1976-02-04
NL7305090A (fr) 1973-10-15
FR2179536B1 (fr) 1975-03-21
IT982756B (it) 1974-10-21

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