FR2267655A1 - Galvanic separation modulator-demodulator - has two voltage-frequency converters and feedback loop - Google Patents

Galvanic separation modulator-demodulator - has two voltage-frequency converters and feedback loop

Info

Publication number
FR2267655A1
FR2267655A1 FR7412980A FR7412980A FR2267655A1 FR 2267655 A1 FR2267655 A1 FR 2267655A1 FR 7412980 A FR7412980 A FR 7412980A FR 7412980 A FR7412980 A FR 7412980A FR 2267655 A1 FR2267655 A1 FR 2267655A1
Authority
FR
France
Prior art keywords
voltage
demodulator
feedback loop
convertor
modulator
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.)
Granted
Application number
FR7412980A
Other languages
French (fr)
Other versions
FR2267655B3 (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.)
TRANCHANT ELECTRONIQUE
Original Assignee
TRANCHANT ELECTRONIQUE
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 TRANCHANT ELECTRONIQUE filed Critical TRANCHANT ELECTRONIQUE
Priority to FR7412980A priority Critical patent/FR2267655A1/en
Publication of FR2267655A1 publication Critical patent/FR2267655A1/en
Application granted granted Critical
Publication of FR2267655B3 publication Critical patent/FR2267655B3/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/04—Distributors combined with modulators or demodulators
    • H04J3/047—Distributors with transistors or integrated circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1203—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier being a single transistor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
    • H03B5/124—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
    • H03B5/1243—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising voltage variable capacitance diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • 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
    • H03C3/22—Angle modulation by means of variable impedance by means of a variable reactive element the element being a semiconductor diode, e.g. varicap diode
    • H03C3/222—Angle modulation by means of variable impedance by means of a variable reactive element the element being a semiconductor diode, e.g. varicap diode using bipolar transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/003—Circuit elements of oscillators
    • H03B2200/0034—Circuit elements of oscillators including a buffer amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
    • H03C2200/0037—Functional aspects of modulators
    • H03C2200/0087—Measures to address temperature induced variations of modulation
    • H03C2200/0091—Measures to address temperature induced variations of modulation by stabilising the temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)

Abstract

The modulator-demodulator has a first voltage-frequency convertor whose input is connected to the input of the modulator-demodulator, as well as a second voltage frequency convertor and a feedback loop. The feedback loop applies a voltage to the second convertor such that the frequencies of the two convertors tend to be equal, the voltage applied to the second convertor forming the output voltage of the demodulator. The feedback loop is a phase loop and it includes a phase comparator having two companion inputs connected respectively to the outputs of the two voltage-frequency convertors, the comparator output being coupled to the input of the second convertor.
FR7412980A 1974-04-12 1974-04-12 Galvanic separation modulator-demodulator - has two voltage-frequency converters and feedback loop Granted FR2267655A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7412980A FR2267655A1 (en) 1974-04-12 1974-04-12 Galvanic separation modulator-demodulator - has two voltage-frequency converters and feedback loop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7412980A FR2267655A1 (en) 1974-04-12 1974-04-12 Galvanic separation modulator-demodulator - has two voltage-frequency converters and feedback loop

Publications (2)

Publication Number Publication Date
FR2267655A1 true FR2267655A1 (en) 1975-11-07
FR2267655B3 FR2267655B3 (en) 1976-05-21

Family

ID=9137619

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7412980A Granted FR2267655A1 (en) 1974-04-12 1974-04-12 Galvanic separation modulator-demodulator - has two voltage-frequency converters and feedback loop

Country Status (1)

Country Link
FR (1) FR2267655A1 (en)

Also Published As

Publication number Publication date
FR2267655B3 (en) 1976-05-21

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