DE872571C - Vorrichtung zur Wellenlaengenumformung, insbesondere sehr kurzer Wellen, die zwei Gleichrichtersysteme und ein Oszillatorsystem enthaelt - Google Patents

Vorrichtung zur Wellenlaengenumformung, insbesondere sehr kurzer Wellen, die zwei Gleichrichtersysteme und ein Oszillatorsystem enthaelt

Info

Publication number
DE872571C
DE872571C DEN2329D DEN0002329D DE872571C DE 872571 C DE872571 C DE 872571C DE N2329 D DEN2329 D DE N2329D DE N0002329 D DEN0002329 D DE N0002329D DE 872571 C DE872571 C DE 872571C
Authority
DE
Germany
Prior art keywords
intermediate frequency
frequency
frequency circuit
circuit
vibrations
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
DEN2329D
Other languages
German (de)
English (en)
Inventor
Maximiliaan Julius Otto Strutt
Aldert Van Der Ziel
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 DE872571C publication Critical patent/DE872571C/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D9/00—Demodulation or transference of modulation of modulated electromagnetic waves
    • H03D9/06—Transference of modulation using distributed inductance and capacitance
    • H03D9/065—Transference of modulation using distributed inductance and capacitance by means of discharge tubes having more than two electrodes
    • 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
    • H03D7/14—Balanced arrangements
    • H03D7/1408—Balanced arrangements with diodes
    • 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)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Superheterodyne Receivers (AREA)
DEN2329D 1941-01-31 1942-01-28 Vorrichtung zur Wellenlaengenumformung, insbesondere sehr kurzer Wellen, die zwei Gleichrichtersysteme und ein Oszillatorsystem enthaelt Expired DE872571C (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL606374X 1941-01-31

Publications (1)

Publication Number Publication Date
DE872571C true DE872571C (de) 1953-04-02

Family

ID=19787953

Family Applications (1)

Application Number Title Priority Date Filing Date
DEN2329D Expired DE872571C (de) 1941-01-31 1942-01-28 Vorrichtung zur Wellenlaengenumformung, insbesondere sehr kurzer Wellen, die zwei Gleichrichtersysteme und ein Oszillatorsystem enthaelt

Country Status (5)

Country Link
US (1) US2441452A (h)
BE (1) BE444311A (h)
DE (1) DE872571C (h)
FR (1) FR878960A (h)
GB (1) GB606374A (h)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2636980A (en) * 1953-04-28
NL64724C (h) * 1941-07-30 1949-11-15
NL72257C (h) * 1943-03-27
US2591983A (en) * 1943-11-12 1952-04-08 Hartford Nat Bank & Trust Co Mixing circuit arrangement
FR937998A (h) * 1944-07-26 1948-10-12
BE467878A (h) * 1944-08-08
US2515441A (en) * 1947-06-25 1950-07-18 Avco Mfg Corp Antenna input circuits
US2594167A (en) * 1948-07-30 1952-04-22 Rca Corp Ultrahigh-frequency bridge circuits
US2664501A (en) * 1949-08-10 1953-12-29 Wilcox Gay Corp Frequency conversion system
US2787705A (en) * 1951-06-25 1957-04-02 Hazeltine Research Inc High-frequency wave-signal tuning device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB420754A (en) * 1932-06-04 1934-12-06 Telefunken Gmbh Improvements in or relating to thermionic apparatus for the production or amplification of ultra short waves
US2094470A (en) * 1934-10-20 1937-09-28 Rca Corp Multiple function tube
US2270791A (en) * 1939-07-13 1942-01-20 Rca Corp Oscillator-modulator circuit
NL58997C (h) * 1940-05-30
GB554675A (en) * 1942-03-13 1943-07-14 Philips Nv Improvements in or relating to frequency changing devices, more particularly for very short waves

Also Published As

Publication number Publication date
FR878960A (fr) 1943-02-10
BE444311A (h)
US2441452A (en) 1948-05-11
GB606374A (en) 1948-08-12

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