GB1314462A - Signal generators - Google Patents

Signal generators

Info

Publication number
GB1314462A
GB1314462A GB1131571A GB1131571A GB1314462A GB 1314462 A GB1314462 A GB 1314462A GB 1131571 A GB1131571 A GB 1131571A GB 1131571 A GB1131571 A GB 1131571A GB 1314462 A GB1314462 A GB 1314462A
Authority
GB
United Kingdom
Prior art keywords
frequency
frequency divider
adjusting
difference detector
mixer
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.)
Expired
Application number
GB1131571A
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.)
Sperry Corp
Original Assignee
Sperry Rand Corp
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 Sperry Rand Corp filed Critical Sperry Rand Corp
Publication of GB1314462A publication Critical patent/GB1314462A/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
    • H03L7/18—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
    • H03L7/185—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 using a mixer in the loop

Abstract

1314462 Frequency synthesizers SPERRY RAND CORP 26 April 1971 [28 April 1970] 11315/71 Heading H3A A signal generator has a closed loop with series-connected elements comprising voltagetuned oscillator means 6, frequency mixer means 1, first frequency divider means 2, and frequency difference detector means 3, wherein there are means provided for adjusting a division modulus N of the first frequency divider means 2. The arrangement also includes second frequency divider means 4, including means for adjusting a division modulus X thereof, for supplying an input to the frequency difference detector means 3, and reference frequency source means 5 for supplying stable frequency signals to the frequency mixer means 1, and to the second frequency divider means 4, the means for adjusting the first and second frequency divider means being adapted to be operated so that the quantity N - X is an integer including zero. The output may be derived from the frequency mixer 1 via a harmonic generator 7. The frequency difference detector 3 may comprise coarse and fine means.
GB1131571A 1970-04-28 1971-04-26 Signal generators Expired GB1314462A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3267270A 1970-04-28 1970-04-28

Publications (1)

Publication Number Publication Date
GB1314462A true GB1314462A (en) 1973-04-26

Family

ID=21866187

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1131571A Expired GB1314462A (en) 1970-04-28 1971-04-26 Signal generators

Country Status (3)

Country Link
DE (1) DE2120935A1 (en)
FR (1) FR2086413B1 (en)
GB (1) GB1314462A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0944172A2 (en) * 1998-03-19 1999-09-22 Conexant Systems, Inc. Phase-locked loop for generating an output signal in two or more frequency ranges

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1473202A (en) * 1966-01-25 1967-03-17 Cit Alcatel Regularly scaled frequency generator in a very wide band
US3448401A (en) * 1967-08-24 1969-06-03 Bendix Corp Digital frequency synthesizer eliminating high speed counters

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0944172A2 (en) * 1998-03-19 1999-09-22 Conexant Systems, Inc. Phase-locked loop for generating an output signal in two or more frequency ranges
EP0944172A3 (en) * 1998-03-19 2000-03-29 Conexant Systems, Inc. Phase-locked loop for generating an output signal in two or more frequency ranges

Also Published As

Publication number Publication date
FR2086413A1 (en) 1971-12-31
DE2120935A1 (en) 1971-12-23
FR2086413B1 (en) 1976-03-19

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees