GB941727A - A control device comprising a tunnel diode oscillator - Google Patents

A control device comprising a tunnel diode oscillator

Info

Publication number
GB941727A
GB941727A GB3283860A GB3283860A GB941727A GB 941727 A GB941727 A GB 941727A GB 3283860 A GB3283860 A GB 3283860A GB 3283860 A GB3283860 A GB 3283860A GB 941727 A GB941727 A GB 941727A
Authority
GB
United Kingdom
Prior art keywords
oscillator
frequency
tunnel diode
sept
decrease
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
GB3283860A
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of GB941727A publication Critical patent/GB941727A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/06—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators
    • H03D3/14—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators by means of semiconductor devices having more than two electrodes
    • 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
    • H03B7/00—Generation of oscillations using active element having a negative resistance between two of its electrodes
    • H03B7/02—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance
    • H03B7/06—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance active element being semiconductor device
    • H03B7/08—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance active element being semiconductor device being a tunnel diode
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
    • H04N5/123—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising whereby the synchronisation signal directly commands a frequency generator

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

941,727. Tunnel diode oscillator circuits; frequency modulation discriminators. SONY CORPORATION. Sept. 23, 1960 [Sept. 25, 1959; Oct. 12, 1959], No. 32838/60. Headings H3A, H3R and H3T. A tunnel diode oscillator B is injection locked in frequency by a received frequency modulated wave or oscillator A, and since the amplified resultant FM wave from the oscillator B is free of any amplitude modulation and differs in phase relative to the FM input in accordance with the instantaneous frequency deviation, the latter two waves, applied to a phase detector 14-16,produce a demodulated FM signal. The latter may be used to augment or decrease the tunnel diode bias, to increase or decrease the frequency swing following up ability of the oscillator when just failing to follow in frequency and thereby increase the detector sensitivity or the bandwidth it responds to with linearity. The oscillator B may also be tuned to a submultiple of the incoming frequency and the tuning capacity 10 may be dispensed with. Capacitors instead of transformers may couple the circuits.
GB3283860A 1959-09-25 1960-09-23 A control device comprising a tunnel diode oscillator Expired GB941727A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3069459 1959-09-25
JP3233059 1959-10-12

Publications (1)

Publication Number Publication Date
GB941727A true GB941727A (en) 1963-11-13

Family

ID=26369090

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3283860A Expired GB941727A (en) 1959-09-25 1960-09-23 A control device comprising a tunnel diode oscillator

Country Status (2)

Country Link
GB (1) GB941727A (en)
NL (1) NL255825A (en)

Also Published As

Publication number Publication date
NL255825A (en)

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