GB622838A - Improvements in or relating to tunable apparatus - Google Patents

Improvements in or relating to tunable apparatus

Info

Publication number
GB622838A
GB622838A GB29124/46A GB2912446A GB622838A GB 622838 A GB622838 A GB 622838A GB 29124/46 A GB29124/46 A GB 29124/46A GB 2912446 A GB2912446 A GB 2912446A GB 622838 A GB622838 A GB 622838A
Authority
GB
United Kingdom
Prior art keywords
frequency
oscillator
mixed
frequencies
sum
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
GB29124/46A
Other languages
English (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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
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 Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB622838A publication Critical patent/GB622838A/en
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)
GB29124/46A 1943-05-25 1946-09-30 Improvements in or relating to tunable apparatus Expired GB622838A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB622838A true GB622838A (en) 1949-05-09

Family

ID=19788476

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29124/46A Expired GB622838A (en) 1943-05-25 1946-09-30 Improvements in or relating to tunable apparatus

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))

Cited By (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

Cited By (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))
DE890816C (de) 1953-09-21

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