GB379395A - Improvements in or relating to thermionic oscillation generators - Google Patents

Improvements in or relating to thermionic oscillation generators

Info

Publication number
GB379395A
GB379395A GB15993/31D GB1599331D GB379395A GB 379395 A GB379395 A GB 379395A GB 15993/31 D GB15993/31 D GB 15993/31D GB 1599331 D GB1599331 D GB 1599331D GB 379395 A GB379395 A GB 379395A
Authority
GB
United Kingdom
Prior art keywords
anode
electrons
centre
oscillations
lead
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
GB15993/31D
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co 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 Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB379395A publication Critical patent/GB379395A/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
    • H03B9/00—Generation of oscillations using transit-time effects
    • H03B9/01—Generation of oscillations using transit-time effects using discharge tubes
    • H03B9/10—Generation of oscillations using transit-time effects using discharge tubes using a magnetron
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/50—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field
    • H01J25/52—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/68—Tubes specially designed to act as oscillator with positive grid and retarding field, e.g. for Barkhausen-Kurz oscillators
    • H01J25/72—Tubes specially designed to act as oscillator with positive grid and retarding field, e.g. for Barkhausen-Kurz oscillators in which a standing wave or a considerable part thereof is produced along an electrode, e.g. Clavier tube
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C5/00—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal
    • H03C5/02—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal by means of transit-time tube
    • H03C5/04—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal by means of transit-time tube the tube being a magnetron

Abstract

379,395. Generating high-frequency oscillations. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Assignees of Usselman, G. L. ; Port Jefferson, Long Island, New York, U.S.A.) June 1, 1931, No. 15993. Convention date, June 27, 1930. [Classes 39 (i) and 40 (v).] In thermionic oscillation generators of very short wavelength, electrons passing from a cathode to an anode are deflected so that they follow alternate paths longer than the shortest distance between the two electrodes, the electrons impinging on the anode without overshooting it and generating oscillations in it at its natural frequency. The anode A, Fig. 3, is a rod one-half wave-length long acting as antennµ and may be coiled at its centre to decrease the percentage of energy radiated and so increase the stability of the generator. The cathode C partially surrounds the centre of the anode as in Fig. 2. The paths of the electrons are increased by negatively charged screens B, S about the centre of the anode and about its central lead D and may also be increased. by the electromagnetic field of a coil G having its axis parallel to the anode. Electrons pass to alternate sides of the anode and the potentials on these sides alternate so rapidly that the electrons do not reach each side until it has become negative. A parabolic reflector R an odd number of quarter wave-lengths, preferably one quarterwavelength, behind the anode A provides directional transmission. Taps symmetrically placed on the anode may supply a transmission line. Radiators spaced from the anode A may be alternately tuned to propogate energy towards or away from a receiving station. The oscillations may be modulated by a transformer in the anode lead or in the circuit of the coil G or in the lead to the screen B, an alternating current source and a key being used in the last case in the primary circuit of the transformer.
GB15993/31D 1930-06-27 1931-06-01 Improvements in or relating to thermionic oscillation generators Expired GB379395A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US464250A US2009368A (en) 1930-06-27 1930-06-27 Oscillation generation

Publications (1)

Publication Number Publication Date
GB379395A true GB379395A (en) 1932-09-01

Family

ID=23843142

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15993/31D Expired GB379395A (en) 1930-06-27 1931-06-01 Improvements in or relating to thermionic oscillation generators

Country Status (4)

Country Link
US (1) US2009368A (en)
DE (1) DE625242C (en)
GB (1) GB379395A (en)
NL (2) NL33991C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2453751A (en) * 1944-08-26 1948-11-16 Philco Corp Antenna reflector system
US2474485A (en) * 1944-09-14 1949-06-28 Bell Telephone Labor Inc Magnetron oscillator
US2605437A (en) * 1946-02-12 1952-07-29 Gen Railway Signal Co Controllable space current electron discharge tube with magnetic field
FR999345A (en) * 1946-11-20 1952-01-29
US2585794A (en) * 1947-10-25 1952-02-12 Rca Corp Magnetron

Also Published As

Publication number Publication date
NL33991C (en)
NL57423B (en)
US2009368A (en) 1935-07-23
DE625242C (en) 1936-02-06

Similar Documents

Publication Publication Date Title
US2103090A (en) Means for and method of generating electrical currents
US2128234A (en) Electron tube
GB379395A (en) Improvements in or relating to thermionic oscillation generators
GB524416A (en) Improvements in or relating to modulated carrier wave transmitters
US2060770A (en) Ultra high frequency oscillation circuit
US1945547A (en) Oscillation generation
US2028866A (en) Ultra short wave communication system
US2042321A (en) Oscillating system
US2101440A (en) Short wave radio transmitting apparatus
Wenstrom Historical review of ultra-short-wave progress
US1962582A (en) Modulating system for ultra-short wave signaling
US1628377A (en) Zerland
US1303184A (en) bhbet
US2103638A (en) Oscillation generator
US1735341A (en) Multiple-channel communication system
GB225553A (en) Improvements in and relating to television systems
US1969578A (en) High frequency generator
GB413335A (en) Improvements in or relating to electrical oscillating systems
US2105026A (en) Electron tube
US1625296A (en) Method oe and means eoe
US2258254A (en) Electrical discharge device
US1501831A (en) Wireless signaling system
US2060934A (en) Radio communication with very short waves
US1848133A (en) Transmitter
US2114478A (en) Oscillation generator