FR2302621A1 - Electronic signal demodulator which extracts fundamental - demodulates signal from magnetic flux gate and uses narrow band filter - Google Patents

Electronic signal demodulator which extracts fundamental - demodulates signal from magnetic flux gate and uses narrow band filter

Info

Publication number
FR2302621A1
FR2302621A1 FR7506032A FR7506032A FR2302621A1 FR 2302621 A1 FR2302621 A1 FR 2302621A1 FR 7506032 A FR7506032 A FR 7506032A FR 7506032 A FR7506032 A FR 7506032A FR 2302621 A1 FR2302621 A1 FR 2302621A1
Authority
FR
France
Prior art keywords
signal
signals
band filter
magnetic flux
flux gate
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
FR7506032A
Other languages
French (fr)
Other versions
FR2302621B1 (en
Inventor
Alain Jean-Claude Pointet
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.)
Sagem SA
Original Assignee
Sagem 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 Sagem SA filed Critical Sagem SA
Priority to FR7506032A priority Critical patent/FR2302621A1/en
Publication of FR2302621A1 publication Critical patent/FR2302621A1/en
Application granted granted Critical
Publication of FR2302621B1 publication Critical patent/FR2302621B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/22—Homodyne or synchrodyne circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Navigation (AREA)

Abstract

An electronic signal demodulator is used to obtain firstly the fundamental frequency then to demodulate the signal. It is used with magnetic compass flux gates as fitted to navigation systems of aircraft. The unit (A) is connected to a flux gate. It has a Scott transformer which changes three signals into two signals. One of the signals is taken to a narrow-band filter centered on the fundamental frequency, and then to a synchronous demodulator to obtain a signal which is fedback through a modulator. An accurate signal is obtained and supplied to another modulator, and then to a power amplifier. The second signal is modified by a circuit which has the same elements as the first circuit. The two signals from the amplifiers are changed into three signals by a Scott transformer. These signals are used in a unit.
FR7506032A 1975-02-26 1975-02-26 Electronic signal demodulator which extracts fundamental - demodulates signal from magnetic flux gate and uses narrow band filter Granted FR2302621A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7506032A FR2302621A1 (en) 1975-02-26 1975-02-26 Electronic signal demodulator which extracts fundamental - demodulates signal from magnetic flux gate and uses narrow band filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7506032A FR2302621A1 (en) 1975-02-26 1975-02-26 Electronic signal demodulator which extracts fundamental - demodulates signal from magnetic flux gate and uses narrow band filter

Publications (2)

Publication Number Publication Date
FR2302621A1 true FR2302621A1 (en) 1976-09-24
FR2302621B1 FR2302621B1 (en) 1978-04-21

Family

ID=9151777

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7506032A Granted FR2302621A1 (en) 1975-02-26 1975-02-26 Electronic signal demodulator which extracts fundamental - demodulates signal from magnetic flux gate and uses narrow band filter

Country Status (1)

Country Link
FR (1) FR2302621A1 (en)

Also Published As

Publication number Publication date
FR2302621B1 (en) 1978-04-21

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Legal Events

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