FR2441970A1 - Simple standard frequency generator - has oscillator tuned to harmonic of synthesiser whose reference frequency output is set incrementally by microprocessor - Google Patents

Simple standard frequency generator - has oscillator tuned to harmonic of synthesiser whose reference frequency output is set incrementally by microprocessor

Info

Publication number
FR2441970A1
FR2441970A1 FR7832340A FR7832340A FR2441970A1 FR 2441970 A1 FR2441970 A1 FR 2441970A1 FR 7832340 A FR7832340 A FR 7832340A FR 7832340 A FR7832340 A FR 7832340A FR 2441970 A1 FR2441970 A1 FR 2441970A1
Authority
FR
France
Prior art keywords
frequency
synthesiser
harmonic
microprocessor
reference frequency
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.)
Granted
Application number
FR7832340A
Other languages
French (fr)
Other versions
FR2441970B1 (en
Inventor
Tonio Fruhauf
Heinrich Loffler
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.)
Rohde and Schwarz GmbH and Co KG
Original Assignee
Rohde and Schwarz GmbH and Co KG
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 Rohde and Schwarz GmbH and Co KG filed Critical Rohde and Schwarz GmbH and Co KG
Priority to FR7832340A priority Critical patent/FR2441970B1/en
Publication of FR2441970A1 publication Critical patent/FR2441970A1/en
Application granted granted Critical
Publication of FR2441970B1 publication Critical patent/FR2441970B1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/22—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

The standard frequency generator has a phase controlled oscillator tuned to the m-th harmonic of a variable reference frequency fr. Its output frequency fa must be tuned with an accuracy of fa. The reference frequency fr is the output frequency of synthesiser whose frequency can be set in decades and whose output frequency fr' in the lowest decade is set in frequency steps of fa. The synthesiser setting device has a microprocessor by which the synthesiser is set to that reference frequency fr' which produces the output frequency fa' = mfr' nearest to the required frequency fa.
FR7832340A 1978-11-16 1978-11-16 STANDARD FREQUENCY GENERATOR Expired FR2441970B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7832340A FR2441970B1 (en) 1978-11-16 1978-11-16 STANDARD FREQUENCY GENERATOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7832340A FR2441970B1 (en) 1978-11-16 1978-11-16 STANDARD FREQUENCY GENERATOR

Publications (2)

Publication Number Publication Date
FR2441970A1 true FR2441970A1 (en) 1980-06-13
FR2441970B1 FR2441970B1 (en) 1985-08-23

Family

ID=9214953

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7832340A Expired FR2441970B1 (en) 1978-11-16 1978-11-16 STANDARD FREQUENCY GENERATOR

Country Status (1)

Country Link
FR (1) FR2441970B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497425A1 (en) * 1980-12-31 1982-07-02 Adret Electronique FREQUENCY SYNTHESIZER WITH FRACTIONAL MULTIPLIER

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2631053A1 (en) * 1976-07-09 1978-01-12 Rohde & Schwarz Standard frequency generator with high spectral purity - has synthesiser frequency divided and high purity output oscillator tuned to specified harmonic
US4086544A (en) * 1972-06-12 1978-04-25 John Fluke Mfg. Co., Inc. Frequency synthesizer using phase locked loops
DE2736133A1 (en) * 1977-08-11 1979-02-15 Rohde & Schwarz Simple standard frequency generator - has oscillator tuned to harmonic of synthesiser whose reference frequency output is set incrementally by microprocessor
GB2044025A (en) * 1978-11-14 1980-10-08 Rohde & Schwarz Standard frequency generator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4086544A (en) * 1972-06-12 1978-04-25 John Fluke Mfg. Co., Inc. Frequency synthesizer using phase locked loops
DE2631053A1 (en) * 1976-07-09 1978-01-12 Rohde & Schwarz Standard frequency generator with high spectral purity - has synthesiser frequency divided and high purity output oscillator tuned to specified harmonic
DE2736133A1 (en) * 1977-08-11 1979-02-15 Rohde & Schwarz Simple standard frequency generator - has oscillator tuned to harmonic of synthesiser whose reference frequency output is set incrementally by microprocessor
GB2044025A (en) * 1978-11-14 1980-10-08 Rohde & Schwarz Standard frequency generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497425A1 (en) * 1980-12-31 1982-07-02 Adret Electronique FREQUENCY SYNTHESIZER WITH FRACTIONAL MULTIPLIER

Also Published As

Publication number Publication date
FR2441970B1 (en) 1985-08-23

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Legal Events

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ST Notification of lapse