GB1192680A - Frequency Generator - Google Patents

Frequency Generator

Info

Publication number
GB1192680A
GB1192680A GB6060668A GB6060668A GB1192680A GB 1192680 A GB1192680 A GB 1192680A GB 6060668 A GB6060668 A GB 6060668A GB 6060668 A GB6060668 A GB 6060668A GB 1192680 A GB1192680 A GB 1192680A
Authority
GB
United Kingdom
Prior art keywords
oscillator
phase comparator
fed
divider
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
GB6060668A
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
Priority claimed from DE19671537323 external-priority patent/DE1537323C/en
Application filed by Rohde and Schwarz GmbH and Co KG filed Critical Rohde and Schwarz GmbH and Co KG
Publication of GB1192680A publication Critical patent/GB1192680A/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
    • H03L7/23—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 with pulse counters or frequency dividers

Abstract

1,192,680. Automatic frequency control. ROHDE & SCHWARZ. 20 Dec., 1968 [21 Dec., 1967], No. 60606/68. Heading H3A. A frequency generator comprises an oscillator O whose frequency is controlled by a signal in a main loop R having a divider K, a mixer M1 and a phase comparator P. The mixer M1 and phase comparator P are also fed from reference oscillators 01, 02 each of which has its own control loop comprising a variable divider N1, N2, phase comparator P1, P2 and reference signal Fq 1 , Fq 2 . The output from oscillator 02 is fed to the phase comparator P via a further divider L. In a modification Fig. 6 (not shown), the control loop for oscillator 02 also includes a mixer stage (M2) fed from a further reference source (Fq 3 ). The oscillator 02 may be provided with means for disconnecting the loop so that it may be used as a variable oscillator.
GB6060668A 1967-12-21 1968-12-20 Frequency Generator Expired GB1192680A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19671537323 DE1537323C (en) 1967-12-21 1967-12-21 Frequency generator with phase comparison, the comparison frequency of which is mixed from at least two normal frequency components

Publications (1)

Publication Number Publication Date
GB1192680A true GB1192680A (en) 1970-05-20

Family

ID=5675885

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6060668A Expired GB1192680A (en) 1967-12-21 1968-12-20 Frequency Generator

Country Status (2)

Country Link
FR (1) FR1596815A (en)
GB (1) GB1192680A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4214205A (en) * 1978-07-05 1980-07-22 British Aircraft Corporation Radio receiving and retransmitting apparatus with frequency lock circuit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5254356A (en) * 1975-10-30 1977-05-02 Toshiba Corp Pahse-synchronized variable frequency oscillator
DE4105566A1 (en) * 1991-02-22 1992-09-03 Rohde & Schwarz HF oscillator with output frequency converted to IF - generates reference frequency of sampling synthesiser by division of pure fixed frequency

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4214205A (en) * 1978-07-05 1980-07-22 British Aircraft Corporation Radio receiving and retransmitting apparatus with frequency lock circuit

Also Published As

Publication number Publication date
FR1596815A (en) 1970-06-22

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Legal Events

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