SE9002654L - Meter - Google Patents

Meter

Info

Publication number
SE9002654L
SE9002654L SE9002654A SE9002654A SE9002654L SE 9002654 L SE9002654 L SE 9002654L SE 9002654 A SE9002654 A SE 9002654A SE 9002654 A SE9002654 A SE 9002654A SE 9002654 L SE9002654 L SE 9002654L
Authority
SE
Sweden
Prior art keywords
frequency
discriminators
spatial
meter
measured
Prior art date
Application number
SE9002654A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE513753C2 (en
SE9002654D0 (en
Inventor
J-L Montardy
E Chamouard
D Jahan
Original Assignee
Thomson Csf
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 Thomson Csf filed Critical Thomson Csf
Publication of SE9002654D0 publication Critical patent/SE9002654D0/en
Publication of SE9002654L publication Critical patent/SE9002654L/en
Publication of SE513753C2 publication Critical patent/SE513753C2/en

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

Abstract

The meter includes a transmission line 1 terminated by a short-circuit 2. The signal whose frequency is to be measured generates a standing-wave pattern in this line in which a spatial sampling is performed by means of detectors 11 to 16; 21 to 26 which are regularly spaced over its length and which are connected to banks of spatial-frequency discriminators 31 to 33; 41 to 43 delivering in parallel the digits of a binary word characteristic of the frequency measured. Said spatial-frequency discriminators e.g. 31 have periodic frequency responses with alternate passbands and stopbands separated by transitions which are regularly distributed over the overall frequency band of the frequency meter and whose number doubles when passing from a discriminator to the next, (Figs 2, 4). The discriminators may use differential (Fig 3) or operational (Figs 5, 6) amplifiers. A pair (Fig 7) of meters with cascaded outputs may be used for increased accuracy. <IMAGE>
SE9002654A 1989-08-04 1990-08-01 Currently digital frequency meter SE513753C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8910525A FR2686702B1 (en) 1989-08-04 1989-08-04 INSTANTANEOUS DIGITAL FREQUENCY METER WITH SPATIAL SAMPLING.

Publications (3)

Publication Number Publication Date
SE9002654D0 SE9002654D0 (en) 1990-08-01
SE9002654L true SE9002654L (en) 1993-08-13
SE513753C2 SE513753C2 (en) 2000-10-30

Family

ID=9384477

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9002654A SE513753C2 (en) 1989-08-04 1990-08-01 Currently digital frequency meter

Country Status (5)

Country Link
DE (1) DE4024438C2 (en)
FR (1) FR2686702B1 (en)
GB (1) GB2263554A (en)
IT (1) IT1242719B (en)
SE (1) SE513753C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2265223A (en) * 1990-09-14 1993-09-22 Thomson Csf Phase discriminator with spatial sampling

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1442592A (en) * 1946-07-09 1976-07-14 Secr Defence Cathode ray tube apparatus
US3541443A (en) * 1968-03-27 1970-11-17 Magnavox Co Standing waving sensing frequency indicating device
US3967210A (en) * 1974-11-12 1976-06-29 Wisconsin Alumni Research Foundation Multimode and multistate ladder oscillator and frequency recognition device
FR2661506B1 (en) * 1983-03-31 1992-09-11 Thomson Csf BROADBAND DEVICE FOR MEASURING THE FREQUENCY OF A SIGNAL, PARTICULARLY FOR MEASURING THE RESPECTIVE FREQUENCIES OF SIMULTANEOUS SIGNALS.
DE3736124A1 (en) * 1987-10-26 1989-05-03 Licentia Gmbh METHOD AND ARRANGEMENT FOR DETERMINING THE TORQUE FREQUENCY OF A SIGNAL
US4783640A (en) * 1987-12-28 1988-11-08 Hughes Aircraft Company Simultaneous-delay correlator apparatus
US4818949A (en) * 1988-01-06 1989-04-04 U.S. Government As Represented By Director, National Security Agency Microwave and millimeter-wave spectrum analyzer

Also Published As

Publication number Publication date
DE4024438A1 (en) 1993-10-21
FR2686702B1 (en) 1995-06-16
FR2686702A1 (en) 1993-07-30
IT9067580A1 (en) 1992-01-24
IT1242719B (en) 1994-05-17
SE513753C2 (en) 2000-10-30
DE4024438C2 (en) 2000-09-21
SE9002654D0 (en) 1990-08-01
IT9067580A0 (en) 1990-07-24
GB9017032D0 (en) 1993-04-14
GB2263554A (en) 1993-07-28

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Legal Events

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