FR801196A - Perfectionnements aux systèmes de radio-communications avec ou sans fils - Google Patents

Perfectionnements aux systèmes de radio-communications avec ou sans fils

Info

Publication number
FR801196A
FR801196A FR801196DA FR801196A FR 801196 A FR801196 A FR 801196A FR 801196D A FR801196D A FR 801196DA FR 801196 A FR801196 A FR 801196A
Authority
FR
France
Prior art keywords
wired
communications systems
radio communications
wireless radio
wireless
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
Application number
Other languages
English (en)
French (fr)
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR801196A publication Critical patent/FR801196A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/20—Transference of modulation from one carrier to another, e.g. frequency-changing by means of transit-time tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/68—Tubes specially designed to act as oscillator with positive grid and retarding field, e.g. for Barkhausen-Kurz oscillators
    • H01J25/72—Tubes specially designed to act as oscillator with positive grid and retarding field, e.g. for Barkhausen-Kurz oscillators in which a standing wave or a considerable part thereof is produced along an electrode, e.g. Clavier tube
    • 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
    • H03C3/20—Angle modulation by means of variable impedance by means of a variable reactive element the element being a voltage-dependent capacitor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
    • H03D7/10—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between different pairs of electrodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/06—Demodulator circuits; Receiver circuits
    • H04L27/063—Superheterodyne receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
FR801196D 1935-04-29 1935-04-29 Perfectionnements aux systèmes de radio-communications avec ou sans fils Expired FR801196A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR801196T 1935-04-29

Publications (1)

Publication Number Publication Date
FR801196A true FR801196A (fr) 1936-07-29

Family

ID=9242477

Family Applications (1)

Application Number Title Priority Date Filing Date
FR801196D Expired FR801196A (fr) 1935-04-29 1935-04-29 Perfectionnements aux systèmes de radio-communications avec ou sans fils

Country Status (3)

Country Link
US (1) US2141292A (enrdf_load_stackoverflow)
FR (1) FR801196A (enrdf_load_stackoverflow)
NL (1) NL48519C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE936153C (de) * 1943-05-06 1955-12-07 Philips Nv Schaltung zum Beeinflussen der Eigenfrequenz eines Schwingungskreises

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439387A (en) * 1941-11-28 1948-04-13 Sperry Corp Electronic tuning control
US2461307A (en) * 1944-11-13 1949-02-08 Rauland Corp Modulating system
US2616043A (en) * 1946-02-16 1952-10-28 O'neill Henry Murray Electronic oscillatory device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE936153C (de) * 1943-05-06 1955-12-07 Philips Nv Schaltung zum Beeinflussen der Eigenfrequenz eines Schwingungskreises

Also Published As

Publication number Publication date
US2141292A (en) 1938-12-27
NL48519C (enrdf_load_stackoverflow)

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