US2812432A - Self-oscillating mixer using tunable long lines - Google Patents

Self-oscillating mixer using tunable long lines Download PDF

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Publication number
US2812432A
US2812432A US464580A US46458054A US2812432A US 2812432 A US2812432 A US 2812432A US 464580 A US464580 A US 464580A US 46458054 A US46458054 A US 46458054A US 2812432 A US2812432 A US 2812432A
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US
United States
Prior art keywords
circuit
frequency
coil
self
conductors
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 - Lifetime
Application number
US464580A
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English (en)
Inventor
Boekhorst Antonius
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.)
US Philips Corp
North American Philips Co Inc
Original Assignee
US Philips Corp
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 US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US2812432A publication Critical patent/US2812432A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/02—Lecher resonators
    • 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
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/28—Continuous tuning of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range

Definitions

  • the inductance of the oscillator circuit is a Lecher wire system comprising two substantially parallel wires, whilst the inductance of the signal circuit is a single wire arranged symmetrically with respect to the first-mentioned Wires, a single conductive sliding member being provided by which the three wires are interconnected at corresponding points.
  • Fig. 3 is a variation of the arrangement shown in Fig. 2.
  • the arrangement is tunable over a frequency range of a given width, for example, the television band of from 174 to 216 m. c./s., since the inductances L2 and L3 are variable and constituted by Lecher wires.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Microwave Amplifiers (AREA)
US464580A 1953-12-09 1954-10-25 Self-oscillating mixer using tunable long lines Expired - Lifetime US2812432A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL762745X 1953-12-09

Publications (1)

Publication Number Publication Date
US2812432A true US2812432A (en) 1957-11-05

Family

ID=19827520

Family Applications (1)

Application Number Title Priority Date Filing Date
US464580A Expired - Lifetime US2812432A (en) 1953-12-09 1954-10-25 Self-oscillating mixer using tunable long lines

Country Status (6)

Country Link
US (1) US2812432A (de)
BE (1) BE533945A (de)
DE (1) DE1034225B (de)
FR (1) FR1118454A (de)
GB (1) GB762745A (de)
NL (2) NL183474B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127562A (en) * 1960-02-29 1964-03-31 Ass Elect Ind Transistor frequency converter providing neutralization of degenerating impedance elements
CN103410806A (zh) * 2013-08-30 2013-11-27 徐州重型机械有限公司 一种起重机及其悬架装置、悬挂油缸

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2126541A (en) * 1935-09-20 1938-08-09 Lee De Forest Lab High frequency oscillating circuit
GB698397A (en) * 1951-07-02 1953-10-14 Philips Electrical Ind Ltd Improvements in or relating to superheterodyne receiving circuits
US2665339A (en) * 1947-11-29 1954-01-05 Patelhold Patentverwertung High and very high frequency tunable circuits

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE540338C (de) * 1931-04-14 1932-12-14 Karl Kohl Dr Roehrenschaltung zur Erzeugung und zum Empfang von ultrakurzen Wellen
DE662148C (de) * 1933-09-01 1938-07-06 Ernst E W Kassner Ultrakurzwellensender
DE651954C (de) * 1934-10-05 1937-10-22 Philips Patentverwaltung Vorrichtung zur Abstimmung eines aus zwei parallelen Leitern gleicher Laenge bestehenden Lecherdrahtsystems

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2126541A (en) * 1935-09-20 1938-08-09 Lee De Forest Lab High frequency oscillating circuit
US2665339A (en) * 1947-11-29 1954-01-05 Patelhold Patentverwertung High and very high frequency tunable circuits
GB698397A (en) * 1951-07-02 1953-10-14 Philips Electrical Ind Ltd Improvements in or relating to superheterodyne receiving circuits

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127562A (en) * 1960-02-29 1964-03-31 Ass Elect Ind Transistor frequency converter providing neutralization of degenerating impedance elements
CN103410806A (zh) * 2013-08-30 2013-11-27 徐州重型机械有限公司 一种起重机及其悬架装置、悬挂油缸
CN103410806B (zh) * 2013-08-30 2016-02-24 徐州重型机械有限公司 一种起重机及其悬架装置、悬挂油缸

Also Published As

Publication number Publication date
NL92538C (de)
BE533945A (de)
DE1034225B (de) 1958-07-17
GB762745A (en) 1956-12-05
FR1118454A (fr) 1956-06-06
NL183474B (nl)

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