GB668498A - Improvements in or relating to superheterodyne radio-receivers - Google Patents

Improvements in or relating to superheterodyne radio-receivers

Info

Publication number
GB668498A
GB668498A GB3613/50A GB361350A GB668498A GB 668498 A GB668498 A GB 668498A GB 3613/50 A GB3613/50 A GB 3613/50A GB 361350 A GB361350 A GB 361350A GB 668498 A GB668498 A GB 668498A
Authority
GB
United Kingdom
Prior art keywords
circuit
inductance
valve
condenser
resistance
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
GB3613/50A
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 Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB668498A publication Critical patent/GB668498A/en
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
    • H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
    • H03D7/08—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between the same two electrodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
    • H04B15/04—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder
    • H04B15/06—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder by local oscillators of receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
GB3613/50A 1949-02-16 1950-02-13 Improvements in or relating to superheterodyne radio-receivers Expired GB668498A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL668498X 1949-02-16

Publications (1)

Publication Number Publication Date
GB668498A true GB668498A (en) 1952-03-19

Family

ID=19798833

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3613/50A Expired GB668498A (en) 1949-02-16 1950-02-13 Improvements in or relating to superheterodyne radio-receivers

Country Status (4)

Country Link
US (1) US2582683A (US08197722-20120612-C00042.png)
FR (1) FR1017229A (US08197722-20120612-C00042.png)
GB (1) GB668498A (US08197722-20120612-C00042.png)
NL (2) NL80423C (US08197722-20120612-C00042.png)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL83682C (US08197722-20120612-C00042.png) * 1949-02-16
US2937343A (en) * 1954-10-18 1960-05-17 Gen Electric Modulation system
US2933599A (en) * 1955-04-05 1960-04-19 Hazeltine Research Inc Non-radiating autodyne frequency converter
NL261732A (US08197722-20120612-C00042.png) * 1960-02-29
US3201697A (en) * 1960-08-29 1965-08-17 Packard Bell Electronics Corp Narrow band transistor radio employing crystal controlled oscillator
CA1111500A (en) * 1977-03-11 1981-10-27 Shigeo Matsuura Self-oscillation mixer circuits
AT370266B (de) * 1978-12-15 1983-03-10 Philips Nv Selbstschwingende mischstufe fuer ukw-rundfunkempfaenger

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1573282A (en) * 1923-11-23 1926-02-16 American Telephone & Telegraph Thermionic modulator
US1950410A (en) * 1931-04-18 1934-03-13 Burton G Lake Modulation system
US2034513A (en) * 1933-04-01 1936-03-17 Rca Corp Combined detector oscillator circuit
US2049777A (en) * 1933-07-21 1936-08-04 Rca Corp Oscillator-detector

Also Published As

Publication number Publication date
FR1017229A (fr) 1952-12-04
NL144910B (nl)
US2582683A (en) 1952-01-15
NL80423C (US08197722-20120612-C00042.png)

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