ATE57801T1 - Frequenzgenerator. - Google Patents

Frequenzgenerator.

Info

Publication number
ATE57801T1
ATE57801T1 AT84302664T AT84302664T ATE57801T1 AT E57801 T1 ATE57801 T1 AT E57801T1 AT 84302664 T AT84302664 T AT 84302664T AT 84302664 T AT84302664 T AT 84302664T AT E57801 T1 ATE57801 T1 AT E57801T1
Authority
AT
Austria
Prior art keywords
frequency
signal
modulation signals
alter
locked loop
Prior art date
Application number
AT84302664T
Other languages
English (en)
Inventor
David Paul Owen
Original Assignee
Marconi Instruments Ltd
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 Marconi Instruments Ltd filed Critical Marconi Instruments Ltd
Application granted granted Critical
Publication of ATE57801T1 publication Critical patent/ATE57801T1/de

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
    • H03C3/095—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation to the loop in front of the voltage controlled oscillator
    • 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
    • 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
    • H03C3/0933—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop using fractional frequency division in the feedback loop of the phase locked loop
    • 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
    • H03C3/0941—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation at more than one point 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
    • H03L7/08—Details of the phase-locked loop
    • H03L7/081—Details of the phase-locked loop provided with an additional controlled phase shifter
    • 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
    • H03L7/1976—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 using a phase accumulator for controlling the counter or frequency divider

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • General Induction Heating (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Control Of Eletrric Generators (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Details Of Television Scanning (AREA)
  • Electrophonic Musical Instruments (AREA)
AT84302664T 1983-05-17 1984-04-19 Frequenzgenerator. ATE57801T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838313616A GB8313616D0 (en) 1983-05-17 1983-05-17 Signal generators
EP84302664A EP0125811B1 (de) 1983-05-17 1984-04-19 Frequenzgenerator

Publications (1)

Publication Number Publication Date
ATE57801T1 true ATE57801T1 (de) 1990-11-15

Family

ID=10542886

Family Applications (1)

Application Number Title Priority Date Filing Date
AT84302664T ATE57801T1 (de) 1983-05-17 1984-04-19 Frequenzgenerator.

Country Status (4)

Country Link
EP (1) EP0125811B1 (de)
AT (1) ATE57801T1 (de)
DE (1) DE3483440D1 (de)
GB (1) GB8313616D0 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8716458D0 (en) * 1987-07-13 1987-08-19 Secr Defence Oscillator phase-noise reduction
US4810977A (en) * 1987-12-22 1989-03-07 Hewlett-Packard Company Frequency modulation in phase-locked loops
GB2214012B (en) * 1987-12-23 1992-01-22 Marconi Instruments Ltd Frequency or phase modulation
WO1990011643A1 (en) * 1989-03-27 1990-10-04 Motorola, Inc. Frequency synthesizer with fm modulation
GB2237157A (en) * 1989-10-20 1991-04-24 Marconi Instruments Ltd Control of frequency modulators
US5097230A (en) * 1990-05-24 1992-03-17 Emhiser Research Limited Phase locked loop that includes D. C. modulation
US5650738A (en) * 1995-12-21 1997-07-22 Hughes Aircraft Company Precision digital phase shift element
US5703514A (en) * 1995-12-21 1997-12-30 Hughes Electronics Digital frequency divider phase shifter
FR2796792B1 (fr) 1999-07-22 2001-10-12 Cit Alcatel Dispositif d'emission radioelectrique
RU2280945C1 (ru) * 2004-11-30 2006-07-27 Самсунг Электроникс Ко., Лтд. Синтезатор частот с частотной или фазовой модуляцией

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877022A (en) * 1973-05-14 1975-04-08 Weston Instruments Inc Enhancing resolution in analog-to-digital conversion by adding statistically controlled noise to the analog input signal
US4068199A (en) * 1976-12-23 1978-01-10 Gte Sylvania Incorporated Digital phase-locked loop frequency modulator
GB1560233A (en) * 1977-02-02 1980-01-30 Marconi Co Ltd Frequency synthesisers
DE2914814A1 (de) * 1979-04-11 1980-10-30 Siemens Ag Frequenzmodulator
US4242649A (en) * 1979-07-13 1980-12-30 Harris Corporation Method and apparatus for modulating a phase locked loop
US4321706A (en) * 1980-07-14 1982-03-23 John Fluke Mfg. Co., Inc. Frequency modulated phase-locked loop signal source

Also Published As

Publication number Publication date
DE3483440D1 (de) 1990-11-29
EP0125811A2 (de) 1984-11-21
EP0125811A3 (en) 1987-06-03
EP0125811B1 (de) 1990-10-24
GB8313616D0 (en) 1983-06-22

Similar Documents

Publication Publication Date Title
EP0193273A3 (de) Synthesizer
SE8603552D0 (sv) Microwave noise measuring apparatus
DE3483440D1 (de) Frequenzgenerator.
GB1488584A (en) Impulse response magnetic resonance spectrometer
DE3889942D1 (de) Programmierbarer Frequenzteiler zur Erzeugung eines niederfrequenten Signals aus einem hochfrequenten Signal.
CA2021335A1 (en) Frequency modulator
CA2192881A1 (en) PLL Circuit and Noise Reduction Means for PLL Circuit
DE3685703D1 (de) Schaltung, die einen dc-fm-phasenregelkreis aufweist.
ATE10319T1 (de) Abstimmvorrichtung mit einer frequenzsynthesierschaltung.
JPS56137738A (en) Phase-synchronizing circuit
EP0093433A3 (de) Oszillatorschaltung
GB1304852A (de)
JPS56119533A (en) Pll circuit
JPS56117429A (en) Phase lock loop
JPS6478524A (en) Phase locked oscillator
SU703886A1 (ru) Генератор дискретной сетки частот
SE7706449L (sv) Sendarmottagare, serskilt for radioelektrisk avstandsmetning
SU647837A1 (ru) Синтезатор частот
SU1319236A1 (ru) Радиоимпульсный генератор гармоник
ATE45648T1 (de) Digitaler quarzstabiler fm-diskriminator.
SU621062A1 (ru) Умножитель частоты
JPS5732133A (en) Phase-synchronous oscillator
JPS564941A (en) Transmission frequency control system
FR2382796A1 (fr) Oscillateur module en frequence, comportant une boucle d'asservissement de phase dont l'action sur la modulation est compensee
DE59812530D1 (de) Regelkreis zur Stabilisierung eines Mikrowellenoszillators

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties