CH269954A - Dispositif de stabilisation de la fréquence médiane d'un oscillateur modulé en fréquence. - Google Patents

Dispositif de stabilisation de la fréquence médiane d'un oscillateur modulé en fréquence.

Info

Publication number
CH269954A
CH269954A CH269954DA CH269954A CH 269954 A CH269954 A CH 269954A CH 269954D A CH269954D A CH 269954DA CH 269954 A CH269954 A CH 269954A
Authority
CH
Switzerland
Prior art keywords
frequency
stabilizing
median
modulated oscillator
frequency modulated
Prior art date
Application number
Other languages
English (en)
Inventor
Telephone Et Radio S Standard
Original Assignee
Standard Telephone & Radio Sa
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 Standard Telephone & Radio Sa filed Critical Standard Telephone & Radio Sa
Publication of CH269954A publication Critical patent/CH269954A/fr

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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/10—Angle modulation by means of variable impedance
    • H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
    • H03C3/14—Angle modulation by means of variable impedance by means of a variable reactive element simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/06—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators
    • H03D3/16—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators by means of electromechanical resonators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Ac-Ac Conversion (AREA)
CH269954D 1945-04-23 1947-04-18 Dispositif de stabilisation de la fréquence médiane d'un oscillateur modulé en fréquence. CH269954A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US589875A US2495776A (en) 1945-04-23 1945-04-23 Frequency-modulated transmission system

Publications (1)

Publication Number Publication Date
CH269954A true CH269954A (fr) 1950-07-31

Family

ID=24359912

Family Applications (1)

Application Number Title Priority Date Filing Date
CH269954D CH269954A (fr) 1945-04-23 1947-04-18 Dispositif de stabilisation de la fréquence médiane d'un oscillateur modulé en fréquence.

Country Status (6)

Country Link
US (1) US2495776A (fr)
BE (1) BE473672A (fr)
CH (1) CH269954A (fr)
ES (1) ES176997A1 (fr)
FR (2) FR939183A (fr)
GB (2) GB606359A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724089A (en) * 1949-12-09 1955-11-15 Du Mont Allen B Lab Inc Crystal discriminator
US2720591A (en) * 1950-02-01 1955-10-11 Arf Products Frequency modulation transmitter
US2817820A (en) * 1952-12-31 1957-12-24 Raytheon Mfg Co Frequency-modulated communication systems

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2296919A (en) * 1940-07-17 1942-09-29 Rca Corp Direct-current insertion
US2312070A (en) * 1940-12-07 1943-02-23 Rca Corp Frequency discriminator circuit
US2374735A (en) * 1943-03-31 1945-05-01 Rca Corp Combined discriminator and carrier filter circuits

Also Published As

Publication number Publication date
US2495776A (en) 1950-01-31
GB620591A (en) 1949-03-28
FR939183A (fr) 1948-11-05
GB606359A (en) 1948-08-12
BE473672A (fr)
ES176997A1 (es) 1947-04-16
FR57658E (fr) 1953-05-04

Similar Documents

Publication Publication Date Title
FR946573A (fr) Dispositif détecteur de modulation en fréquence
FR944427A (fr) Dispositif pour la stabilisation automatique de la fréquence moyenne d'un générateur modulé en fréquence
CH276572A (fr) Dispositif générateur d'oscillations modulées en fréquence.
CH245234A (de) Schaltung zum Stabilisieren der Trägerfrequenz eines frequenzmodulierten Oszillators.
FR939388A (fr) Dispositif de transmission des oscillations à haute fréquence
CH269954A (fr) Dispositif de stabilisation de la fréquence médiane d'un oscillateur modulé en fréquence.
CH255270A (fr) Dispositif de réception d'ondes porteuses modulées par impulsions.
CH270708A (fr) Oscillateur modulé en fréquence.
CH258469A (fr) Dispositif pour la modulation de fréquence.
ES174413A1 (es) Un circuito detector de modulación de frecuencia
FR1041095A (fr) Oscillateur modulé en fréquence
DK74700C (da) Kobling til stabilisering af bærefrekvensen af en frekvensmoduleret svingning.
CH265357A (fr) Dispositif discriminateur de fréquence.
FR917696A (fr) Dispositif pour la modulation en fréquence
FR975945A (fr) Dispositif de stabilisation automatique de la fréquence moyenne d'un oscillateur modulé en fréquence
CH258991A (fr) Dispositif d'amplification.
FR919582A (fr) Générateur d'oscillations de haute fréquence pour appareils médicaux
FR1043310A (fr) Montage pour moduler en fréquence l'oscillation fournie par un oscillateur
FR930625A (fr) Récepteur à oscillations modulées
FR950755A (fr) Dispositif de couplage à haute fréquence
CH253362A (fr) Dispositif d'accord comprenant un circuit oscillant.
FR1040157A (fr) Oscillateur à modulation de fréquence
AU126043B2 (en) Oscillator modulator
DK80923C (da) Detektor til frekvens- eller fasemodulerede bølger.
FR925979A (fr) Récepteur à modulation de fréquence ou de phase avec dispositif auxiliaire d'accord