GB9918792D0 - Improvements in or relating to phase-locked loop circuits - Google Patents

Improvements in or relating to phase-locked loop circuits

Info

Publication number
GB9918792D0
GB9918792D0 GBGB9918792.4A GB9918792A GB9918792D0 GB 9918792 D0 GB9918792 D0 GB 9918792D0 GB 9918792 A GB9918792 A GB 9918792A GB 9918792 D0 GB9918792 D0 GB 9918792D0
Authority
GB
United Kingdom
Prior art keywords
relating
phase
locked loop
loop circuits
circuits
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.)
Withdrawn
Application number
GBGB9918792.4A
Other versions
GB2353154A (en
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.)
Nokia of America Corp
Original Assignee
Lucent Technologies Inc
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 Lucent Technologies Inc filed Critical Lucent Technologies Inc
Priority to GB9918792A priority Critical patent/GB2353154A/en
Publication of GB9918792D0 publication Critical patent/GB9918792D0/en
Publication of GB2353154A publication Critical patent/GB2353154A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/0916—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop
    • H03C3/0925—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop applying frequency modulation at the divider in the feedback 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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L2207/00—Indexing scheme relating to automatic control of frequency or phase and to synchronisation
    • H03L2207/10—Indirect frequency synthesis using a frequency multiplier in the phase-locked loop or in the reference signal path
    • 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
    • H03L7/1974—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 fractional frequency division
GB9918792A 1999-08-10 1999-08-10 Phase-locked loop circuit adapted to perate both as a digital modulator and as a frequency synthesizer at the same time Withdrawn GB2353154A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9918792A GB2353154A (en) 1999-08-10 1999-08-10 Phase-locked loop circuit adapted to perate both as a digital modulator and as a frequency synthesizer at the same time

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9918792A GB2353154A (en) 1999-08-10 1999-08-10 Phase-locked loop circuit adapted to perate both as a digital modulator and as a frequency synthesizer at the same time

Publications (2)

Publication Number Publication Date
GB9918792D0 true GB9918792D0 (en) 1999-10-13
GB2353154A GB2353154A (en) 2001-02-14

Family

ID=10858873

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9918792A Withdrawn GB2353154A (en) 1999-08-10 1999-08-10 Phase-locked loop circuit adapted to perate both as a digital modulator and as a frequency synthesizer at the same time

Country Status (1)

Country Link
GB (1) GB2353154A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102394642A (en) * 2011-10-17 2012-03-28 重庆西南集成电路设计有限责任公司 Phase-locked loop type frequency synthesizer and radio frequency program-controlled frequency divider

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110719100B (en) * 2019-11-19 2021-04-23 复旦大学 Fractional frequency all-digital phase-locked loop and control method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2587569B1 (en) * 1985-09-17 1991-09-20 Thomson Csf FAST VARIATION FREQUENCY GENERATOR
US5077529A (en) * 1989-07-19 1991-12-31 Level One Communications, Inc. Wide bandwidth digital phase locked loop with reduced low frequency intrinsic jitter
US5055800A (en) * 1990-04-30 1991-10-08 Motorola, Inc. Fractional n/m synthesis
JPH04371024A (en) * 1991-06-19 1992-12-24 Sony Corp Pll frequency synthesizer
US5353311A (en) * 1992-01-09 1994-10-04 Nec Corporation Radio transmitter
CA2156269C (en) * 1993-03-18 1999-08-03 Hiroshi Horie Frequency synthesizer
JP2806239B2 (en) * 1993-12-28 1998-09-30 三菱電機株式会社 Frequency synthesizer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102394642A (en) * 2011-10-17 2012-03-28 重庆西南集成电路设计有限责任公司 Phase-locked loop type frequency synthesizer and radio frequency program-controlled frequency divider
CN102394642B (en) * 2011-10-17 2013-09-18 重庆西南集成电路设计有限责任公司 Phase-locked loop type frequency synthesizer and radio frequency program-controlled frequency divider

Also Published As

Publication number Publication date
GB2353154A (en) 2001-02-14

Similar Documents

Publication Publication Date Title
GB2355200B (en) Improvements in or relating to devices
GB2356750B (en) Reducing jitter in mixed-signal circuitry
EP1184987A4 (en) Phase-locked loop
EP1076416A4 (en) Phase-locked loop
GB9929489D0 (en) Improvements in or relating to electronic components
GB2367961B (en) Phase-locked loop circuit
GB9922068D0 (en) Dual loop phase-locked loop
GB2349525B (en) Oscillating circuits
GB2338593B (en) Improvements in or relating to integrated circuits
GB9918792D0 (en) Improvements in or relating to phase-locked loop circuits
GB9905555D0 (en) Improvements in or relating to devices
GB9909827D0 (en) Improvements in or relating to delay lock loops
GB2349803B (en) Improvements in shelving
GB9909626D0 (en) Loop prevention in networks
GB9928257D0 (en) Improvements in or relating to circuit boards
GB2355183B (en) Improvements in foot rests
GB9906789D0 (en) Improvements in or relating to devices
GB2370167B (en) Improvements in or relating to phase locked loops
GB9922501D0 (en) Improvements in or relating to conveyors
GB2351900B (en) Improvements in, or Relating to, Cots
GB2354121B (en) Improvements in or relating to inverters
GB9926672D0 (en) Mass variation in superconducting circuits
GB9908569D0 (en) Improvements in or relating to stairlifts
SG102539A1 (en) Improvements in splints
GB9919925D0 (en) Improvements in and relating to feedback circuits

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)