FR873942A - Perfectionnement apporté aux appareils recepteurs de t. s. f. superhétérodynes - Google Patents

Perfectionnement apporté aux appareils recepteurs de t. s. f. superhétérodynes

Info

Publication number
FR873942A
FR873942A FR873942DA FR873942A FR 873942 A FR873942 A FR 873942A FR 873942D A FR873942D A FR 873942DA FR 873942 A FR873942 A FR 873942A
Authority
FR
France
Prior art keywords
superheterodynes
further development
receiving devices
devices
receiving
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR873942A publication Critical patent/FR873942A/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
    • H03D7/18—Modifications of frequency-changers for eliminating image frequencies
    • 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
    • H03D7/02—Transference of modulation from one carrier to another, e.g. frequency-changing by means of diodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)
FR873942D 1939-09-08 1941-04-17 Perfectionnement apporté aux appareils recepteurs de t. s. f. superhétérodynes Expired FR873942A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL234469X 1939-09-08

Publications (1)

Publication Number Publication Date
FR873942A true FR873942A (fr) 1942-07-23

Family

ID=19780179

Family Applications (1)

Application Number Title Priority Date Filing Date
FR873942D Expired FR873942A (fr) 1939-09-08 1941-04-17 Perfectionnement apporté aux appareils recepteurs de t. s. f. superhétérodynes

Country Status (7)

Country Link
US (1) US2273640A (enrdf_load_stackoverflow)
BE (1) BE440600A (enrdf_load_stackoverflow)
CH (1) CH234469A (enrdf_load_stackoverflow)
DE (1) DE1081512B (enrdf_load_stackoverflow)
FR (1) FR873942A (enrdf_load_stackoverflow)
GB (1) GB607028A (enrdf_load_stackoverflow)
NL (1) NL57631C (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511107A (en) * 1942-11-11 1950-06-13 Philip H Greeley Radio receiving circuit
US2549423A (en) * 1943-09-22 1951-04-17 Rca Corp Reduction of selective fading distortion
US2420439A (en) * 1943-11-02 1947-05-13 Morrison Montford Aircraft range and direction finder
US2460900A (en) * 1943-12-31 1949-02-08 Philco Corp Wide-band superheterodyne receiver
US2508048A (en) * 1944-12-21 1950-05-16 Rca Corp Frequency converter circuits
BE473522A (enrdf_load_stackoverflow) * 1946-05-28
US2571041A (en) * 1946-06-28 1951-10-09 Rca Corp Heterodyne detector circuit
US3147440A (en) * 1959-02-17 1964-09-01 Singer Inc H R B Cross-modulation detector means tuned to local oscillator frequency

Also Published As

Publication number Publication date
DE1081512B (de) 1960-05-12
CH234469A (de) 1944-09-30
GB607028A (en) 1948-08-24
US2273640A (en) 1942-02-17
NL57631C (enrdf_load_stackoverflow)
BE440600A (enrdf_load_stackoverflow)

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