ES379900A1 - Circuito amplificador-repetidor para senales moduladas an- gularmente. - Google Patents

Circuito amplificador-repetidor para senales moduladas an- gularmente.

Info

Publication number
ES379900A1
ES379900A1 ES379900A ES379900A ES379900A1 ES 379900 A1 ES379900 A1 ES 379900A1 ES 379900 A ES379900 A ES 379900A ES 379900 A ES379900 A ES 379900A ES 379900 A1 ES379900 A1 ES 379900A1
Authority
ES
Spain
Prior art keywords
amplifying
modulated signals
angle modulated
repeating circuit
oscillator
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
ES379900A
Other languages
English (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.)
Telettra Laboratori di Telefonia Elettronica e Radio SpA
Original Assignee
Telettra Laboratori di Telefonia Elettronica e Radio SpA
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 Telettra Laboratori di Telefonia Elettronica e Radio SpA filed Critical Telettra Laboratori di Telefonia Elettronica e Radio SpA
Publication of ES379900A1 publication Critical patent/ES379900A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • 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
    • H03D3/24—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits
    • H03D3/241—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/04—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers
    • H03F1/06—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers to raise the efficiency of amplifying modulated radio frequency waves; to raise the efficiency of amplifiers acting also as modulators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/345—Negative-feedback-circuit arrangements with or without positive feedback using hybrid or directional couplers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/165—Ground-based stations employing angle modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)
  • Amplifiers (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
ES379900A 1969-05-23 1970-05-21 Circuito amplificador-repetidor para senales moduladas an- gularmente. Expired ES379900A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT5196369 1969-05-23

Publications (1)

Publication Number Publication Date
ES379900A1 true ES379900A1 (es) 1973-04-16

Family

ID=11276093

Family Applications (1)

Application Number Title Priority Date Filing Date
ES379900A Expired ES379900A1 (es) 1969-05-23 1970-05-21 Circuito amplificador-repetidor para senales moduladas an- gularmente.

Country Status (6)

Country Link
AU (1) AU1515870A (es)
DE (1) DE2023809A1 (es)
ES (1) ES379900A1 (es)
FR (1) FR2053904A5 (es)
GB (1) GB1307888A (es)
NL (1) NL7007520A (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2239996B (en) * 1990-01-12 1994-08-17 Technophone Ltd Booster for a portable radio telephone
FR2673789B1 (fr) * 1991-03-08 1993-09-03 Alcatel Espace Demodulateur a boucle de phase.

Also Published As

Publication number Publication date
GB1307888A (en) 1973-02-21
AU1515870A (en) 1971-11-18
DE2023809A1 (de) 1971-01-07
NL7007520A (es) 1970-11-25
FR2053904A5 (es) 1971-04-16

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