DE68916889T2 - Frequenzsynthesierer. - Google Patents

Frequenzsynthesierer.

Info

Publication number
DE68916889T2
DE68916889T2 DE68916889T DE68916889T DE68916889T2 DE 68916889 T2 DE68916889 T2 DE 68916889T2 DE 68916889 T DE68916889 T DE 68916889T DE 68916889 T DE68916889 T DE 68916889T DE 68916889 T2 DE68916889 T2 DE 68916889T2
Authority
DE
Germany
Prior art keywords
frequency synthesizer
synthesizer
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.)
Expired - Fee Related
Application number
DE68916889T
Other languages
English (en)
Other versions
DE68916889D1 (de
Inventor
Yoshiaki Tarusawa
Shigeki Saito
Yasushi Yamao
Toshio Nojima
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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
Priority claimed from JP63218586A external-priority patent/JPH082020B2/ja
Priority claimed from JP63254199A external-priority patent/JPH02100519A/ja
Priority claimed from JP63291999A external-priority patent/JPH0797731B2/ja
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Publication of DE68916889D1 publication Critical patent/DE68916889D1/de
Application granted granted Critical
Publication of DE68916889T2 publication Critical patent/DE68916889T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00Automatic control of frequency or phase; Synchronisation
    • H03L7/06Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18Indirect 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
    • H03L7/183Indirect 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
    • H03L7/187Indirect 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 means for coarse tuning the voltage controlled oscillator of the loop
    • H03L7/189Indirect 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 means for coarse tuning the voltage controlled oscillator of the loop comprising a D/A converter for generating a coarse tuning voltage
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00Automatic control of frequency or phase; Synchronisation
    • H03L7/06Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08Details of the phase-locked loop
    • H03L7/14Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail or are interrupted
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00Automatic control of frequency or phase; Synchronisation
    • H03L7/06Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18Indirect 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
    • H03L7/197Indirect 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 numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
    • H03L7/199Indirect 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 numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division with reset of the frequency divider or the counter, e.g. for assuring initial synchronisation
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L2207/00Indexing scheme relating to automatic control of frequency or phase and to synchronisation
    • H03L2207/05Compensating for non-linear characteristics of the controlled oscillator
DE68916889T 1988-09-02 1989-09-01 Frequenzsynthesierer. Expired - Fee Related DE68916889T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP63218586A JPH082020B2 (ja) 1988-09-02 1988-09-02 周波数シンセサイザ
JP63254199A JPH02100519A (ja) 1988-10-07 1988-10-07 周波数シンセサイザ
JP63291999A JPH0797731B2 (ja) 1988-11-18 1988-11-18 Vco制御回路

Publications (2)

Publication Number Publication Date
DE68916889D1 DE68916889D1 (de) 1994-08-25
DE68916889T2 true DE68916889T2 (de) 1995-03-16

Family

ID=27330163

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68916889T Expired - Fee Related DE68916889T2 (de) 1988-09-02 1989-09-01 Frequenzsynthesierer.

Country Status (4)

Country Link
US (1) US4980652A (de)
EP (1) EP0360442B1 (de)
CA (1) CA1325251C (de)
DE (1) DE68916889T2 (de)

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Also Published As

Publication number Publication date
EP0360442A1 (de) 1990-03-28
EP0360442B1 (de) 1994-07-20
CA1325251C (en) 1993-12-14
DE68916889D1 (de) 1994-08-25
US4980652A (en) 1990-12-25

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