IT1055011B - Dispositivo per misurare piccole differenze di frequenza - Google Patents

Dispositivo per misurare piccole differenze di frequenza

Info

Publication number
IT1055011B
IT1055011B IT19657/76A IT1965776A IT1055011B IT 1055011 B IT1055011 B IT 1055011B IT 19657/76 A IT19657/76 A IT 19657/76A IT 1965776 A IT1965776 A IT 1965776A IT 1055011 B IT1055011 B IT 1055011B
Authority
IT
Italy
Prior art keywords
small frequency
frequency differences
measure small
measure
differences
Prior art date
Application number
IT19657/76A
Other languages
English (en)
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of IT1055011B publication Critical patent/IT1055011B/it

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/12—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into phase shift

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Manipulation Of Pulses (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Measuring Phase Differences (AREA)
IT19657/76A 1975-01-29 1976-01-27 Dispositivo per misurare piccole differenze di frequenza IT1055011B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7500935A SE382120B (sv) 1975-01-29 1975-01-29 Anordning for metning av sma frekvensdifferenser

Publications (1)

Publication Number Publication Date
IT1055011B true IT1055011B (it) 1981-12-21

Family

ID=20323528

Family Applications (1)

Application Number Title Priority Date Filing Date
IT19657/76A IT1055011B (it) 1975-01-29 1976-01-27 Dispositivo per misurare piccole differenze di frequenza

Country Status (7)

Country Link
US (1) US4001680A (it)
BR (1) BR7600507A (it)
DE (1) DE2602540A1 (it)
FI (1) FI58405C (it)
GB (1) GB1482398A (it)
IT (1) IT1055011B (it)
SE (1) SE382120B (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4106096A (en) * 1976-08-30 1978-08-08 Bell Telephone Laboratories, Incorporated Derivative measurement by frequency mixing
JPS6037711B2 (ja) * 1978-09-01 1985-08-28 株式会社東芝 位相検出器
US4585989A (en) * 1984-05-18 1986-04-29 Tektronix, Inc. 50% point of amplitude and phase detector
GB2193406B (en) * 1986-08-02 1990-04-25 Marconi Instruments Ltd Phase detector
US6539316B1 (en) 2000-01-06 2003-03-25 Data Sciences International, Inc. Phase detector
US6595071B1 (en) 2000-01-06 2003-07-22 Transoma Medical, Inc. Estimation of error angle in ultrasound flow measurement
US6435037B1 (en) 2000-01-06 2002-08-20 Data Sciences International, Inc. Multiplexed phase detector

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3233180A (en) * 1961-12-13 1966-02-01 Bowser Inc Frequency comparator
DE1516994A1 (de) * 1965-04-06 1969-09-25 Western Electric Co Frequenzvergleichsanordnung
FR1525939A (fr) * 1966-12-30 1968-05-24 C I T Cie Ind Des Telecommuni Circuit servant à déceler le synchronisme entre deux fréquences

Also Published As

Publication number Publication date
FI58405C (fi) 1981-01-12
GB1482398A (en) 1977-08-10
FI58405B (fi) 1980-09-30
FI760037A (it) 1976-07-30
SE382120B (sv) 1976-01-12
BR7600507A (pt) 1976-08-31
US4001680A (en) 1977-01-04
DE2602540A1 (de) 1976-08-05

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