DE890816C - Abstimmbares Empfangs- bzw. Sendegeraet, insbesondere UEberlagerungsempfaenger - Google Patents

Abstimmbares Empfangs- bzw. Sendegeraet, insbesondere UEberlagerungsempfaenger

Info

Publication number
DE890816C
DE890816C DEN2223D DEN0002223D DE890816C DE 890816 C DE890816 C DE 890816C DE N2223 D DEN2223 D DE N2223D DE N0002223 D DEN0002223 D DE N0002223D DE 890816 C DE890816 C DE 890816C
Authority
DE
Germany
Prior art keywords
frequency
frequencies
over
tunable
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
DEN2223D
Other languages
German (de)
English (en)
Inventor
Eduard Herman Hugenholtz
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 DE890816C publication Critical patent/DE890816C/de
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03B21/00—Generation of oscillations by combining unmodulated signals of different frequencies
    • H03B21/01—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/10—Circuit arrangements for fine tuning, e.g. bandspreading
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Superheterodyne Receivers (AREA)
DEN2223D 1943-05-25 1944-05-23 Abstimmbares Empfangs- bzw. Sendegeraet, insbesondere UEberlagerungsempfaenger Expired DE890816C (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL622838X 1943-05-25

Publications (1)

Publication Number Publication Date
DE890816C true DE890816C (de) 1953-09-21

Family

ID=19788476

Family Applications (1)

Application Number Title Priority Date Filing Date
DEN2223D Expired DE890816C (de) 1943-05-25 1944-05-23 Abstimmbares Empfangs- bzw. Sendegeraet, insbesondere UEberlagerungsempfaenger

Country Status (4)

Country Link
BE (1) BE455967A (en(2012))
DE (1) DE890816C (en(2012))
GB (1) GB622838A (en(2012))
NL (1) NL65280C (en(2012))

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3018439A (en) * 1958-11-20 1962-01-23 Gen Dynamics Corp Automatic wave analyzer
EP1585227A1 (en) * 2004-04-08 2005-10-12 Frank Dr.-Ir. Op 't Eynde A two-step frequency converter with only one mixer in the signal path

Also Published As

Publication number Publication date
BE455967A (en(2012))
NL65280C (en(2012))
GB622838A (en) 1949-05-09

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