AU4436893A - PLL frequency synthesizer capable of changing an output frequency at a high speed - Google Patents

PLL frequency synthesizer capable of changing an output frequency at a high speed

Info

Publication number
AU4436893A
AU4436893A AU44368/93A AU4436893A AU4436893A AU 4436893 A AU4436893 A AU 4436893A AU 44368/93 A AU44368/93 A AU 44368/93A AU 4436893 A AU4436893 A AU 4436893A AU 4436893 A AU4436893 A AU 4436893A
Authority
AU
Australia
Prior art keywords
changing
high speed
synthesizer capable
pll
output 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
AU44368/93A
Other versions
AU654628B2 (en
Inventor
Hidehiko Norimatsu
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Publication of AU4436893A publication Critical patent/AU4436893A/en
Application granted granted Critical
Publication of AU654628B2 publication Critical patent/AU654628B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • H03L7/197—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 numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
    • H03L7/1972—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 numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for reducing the locking time interval
AU44368/93A 1990-10-22 1993-07-30 PLL frequency synthesizer capable of changing an output frequency at a high speed Ceased AU654628B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2281784A JP2994021B2 (en) 1990-10-22 1990-10-22 PLL frequency synthesizer
JP2-281784 1990-10-22
JP2-318629 1990-11-24
JP3-141420 1991-05-16

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
AU86021/91A Division AU642536B2 (en) 1990-10-22 1991-10-21 PLL frequency synthesizer capable of changing an output frequency at a high speed

Publications (2)

Publication Number Publication Date
AU4436893A true AU4436893A (en) 1993-10-14
AU654628B2 AU654628B2 (en) 1994-11-10

Family

ID=17643928

Family Applications (2)

Application Number Title Priority Date Filing Date
AU44367/93A Ceased AU654627B2 (en) 1990-10-22 1993-07-30 PLL frequency synthesizer capable of changing an output frequency at a high speed
AU44368/93A Ceased AU654628B2 (en) 1990-10-22 1993-07-30 PLL frequency synthesizer capable of changing an output frequency at a high speed

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AU44367/93A Ceased AU654627B2 (en) 1990-10-22 1993-07-30 PLL frequency synthesizer capable of changing an output frequency at a high speed

Country Status (2)

Country Link
JP (1) JP2994021B2 (en)
AU (2) AU654627B2 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035645U (en) * 1973-07-25 1975-04-15
JPS5919811A (en) * 1982-07-26 1984-02-01 Oki Electric Ind Co Ltd Counter circuit
JPS5938766A (en) * 1982-08-27 1984-03-02 Fuji Xerox Co Ltd Control device for latent image potential of copying machine
US4568888A (en) * 1983-11-08 1986-02-04 Trw Inc. PLL Fast frequency synthesizer with memories for coarse tuning and loop gain correction
US4745372A (en) * 1985-10-17 1988-05-17 Matsushita Electric Industrial Co., Ltd. Phase-locked-loop circuit having a charge pump
JPH0294710A (en) * 1988-09-29 1990-04-05 Nec Corp Frequency synthesizer oscillator

Also Published As

Publication number Publication date
AU654627B2 (en) 1994-11-10
JPH04157816A (en) 1992-05-29
AU654628B2 (en) 1994-11-10
AU4436793A (en) 1993-10-14
JP2994021B2 (en) 1999-12-27

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired