FR848415A - Frequency modulated wave receiver - Google Patents

Frequency modulated wave receiver

Info

Publication number
FR848415A
FR848415A FR848415DA FR848415A FR 848415 A FR848415 A FR 848415A FR 848415D A FR848415D A FR 848415DA FR 848415 A FR848415 A FR 848415A
Authority
FR
France
Prior art keywords
frequency modulated
modulated wave
wave receiver
receiver
frequency
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
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.)
Fides BV
Original Assignee
Fides BV
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 Fides BV filed Critical Fides BV
Application granted granted Critical
Publication of FR848415A publication Critical patent/FR848415A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H01F21/08—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by varying the permeability of the core, e.g. by varying magnetic bias
    • 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
    • H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
    • H03D3/003—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback
    • H03D3/005—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback wherein the demodulated signal is used for controlling a bandpass filter

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Noise Elimination (AREA)
  • Circuits Of Receivers In General (AREA)
FR848415D 1938-01-04 1939-01-03 Frequency modulated wave receiver Expired FR848415A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES130252D DE723384C (en) 1938-01-04 1938-01-04 Receiver for frequency-modulated waves

Publications (1)

Publication Number Publication Date
FR848415A true FR848415A (en) 1939-10-30

Family

ID=7988379

Family Applications (1)

Application Number Title Priority Date Filing Date
FR848415D Expired FR848415A (en) 1938-01-04 1939-01-03 Frequency modulated wave receiver

Country Status (4)

Country Link
US (1) US2170202A (en)
DE (1) DE723384C (en)
FR (1) FR848415A (en)
GB (1) GB503907A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2540643A (en) * 1940-01-12 1951-02-06 Edwin H Armstrong Frequency-modulated carrier signal receiver
US2488612A (en) * 1940-03-09 1949-11-22 Rca Corp Frequency modulation reception
US2812510A (en) * 1952-06-25 1957-11-05 Elmer H Schulz Frequency modulation system
US2939951A (en) * 1957-11-04 1960-06-07 Paul L Schaffer Conversion of amplitude to phase modulation by means of crystal to reduce noise

Also Published As

Publication number Publication date
DE723384C (en) 1942-08-04
US2170202A (en) 1939-08-22
GB503907A (en) 1939-04-17

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