FR2335094A1 - Generateur de signaux electriques - Google Patents

Generateur de signaux electriques

Info

Publication number
FR2335094A1
FR2335094A1 FR7636697A FR7636697A FR2335094A1 FR 2335094 A1 FR2335094 A1 FR 2335094A1 FR 7636697 A FR7636697 A FR 7636697A FR 7636697 A FR7636697 A FR 7636697A FR 2335094 A1 FR2335094 A1 FR 2335094A1
Authority
FR
France
Prior art keywords
signal generator
electric signal
generator
electric
signal
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
FR7636697A
Other languages
English (en)
Other versions
FR2335094B1 (fr
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.)
Aeroflex Burnham Ltd
Original Assignee
Racal Instruments Ltd
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 Racal Instruments Ltd filed Critical Racal Instruments Ltd
Publication of FR2335094A1 publication Critical patent/FR2335094A1/fr
Application granted granted Critical
Publication of FR2335094B1 publication Critical patent/FR2335094B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
    • H03J5/0272—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
    • H03J7/065—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers the counter or frequency divider being used in a phase locked loop
    • 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
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
FR7636697A 1975-12-09 1976-12-06 Generateur de signaux electriques Granted FR2335094A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5037975A GB1528814A (en) 1975-12-09 1975-12-09 Electrical signal generators

Publications (2)

Publication Number Publication Date
FR2335094A1 true FR2335094A1 (fr) 1977-07-08
FR2335094B1 FR2335094B1 (fr) 1982-01-08

Family

ID=10455703

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7636697A Granted FR2335094A1 (fr) 1975-12-09 1976-12-06 Generateur de signaux electriques

Country Status (4)

Country Link
JP (1) JPS5296857A (fr)
DE (1) DE2655138A1 (fr)
FR (1) FR2335094A1 (fr)
GB (1) GB1528814A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8608303D0 (en) * 1986-04-04 1986-05-08 Plessey Co Plc Frequency synthesiser
DE3772914D1 (de) * 1986-04-04 1991-10-17 Plessey Overseas Frequenzsynthesizer.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023371A (en) * 1958-03-07 1962-02-27 Thompson Ramo Wooldridge Inc Precision variable frequency generator
DE1932764B2 (de) * 1969-06-27 1970-12-17 Siemens Ag Schaltung zur wahlweise quasikontinuierlichen Durchstimmung eines dekadischen Frequenzsynthesizers
GB1230222A (fr) * 1967-09-13 1971-04-28

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023371A (en) * 1958-03-07 1962-02-27 Thompson Ramo Wooldridge Inc Precision variable frequency generator
GB1230222A (fr) * 1967-09-13 1971-04-28
DE1932764B2 (de) * 1969-06-27 1970-12-17 Siemens Ag Schaltung zur wahlweise quasikontinuierlichen Durchstimmung eines dekadischen Frequenzsynthesizers

Also Published As

Publication number Publication date
GB1528814A (en) 1978-10-18
DE2655138A1 (de) 1977-06-23
FR2335094B1 (fr) 1982-01-08
JPS5296857A (en) 1977-08-15

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Legal Events

Date Code Title Description
ST Notification of lapse