GB433026A - Improvements in or relating to apparatus for the directional transmission or reception of ultra-short electromagnetic waves - Google Patents

Improvements in or relating to apparatus for the directional transmission or reception of ultra-short electromagnetic waves

Info

Publication number
GB433026A
GB433026A GB6178/35A GB617835A GB433026A GB 433026 A GB433026 A GB 433026A GB 6178/35 A GB6178/35 A GB 6178/35A GB 617835 A GB617835 A GB 617835A GB 433026 A GB433026 A GB 433026A
Authority
GB
United Kingdom
Prior art keywords
valve
aerial
anode
grid
transmission
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
GB6178/35A
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.)
MEAF Machinerieen en Apparaten Fabrieken NV
Original Assignee
MEAF Machinerieen en Apparaten Fabrieken 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 MEAF Machinerieen en Apparaten Fabrieken NV filed Critical MEAF Machinerieen en Apparaten Fabrieken NV
Publication of GB433026A publication Critical patent/GB433026A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
    • H01Q19/13—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
    • 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
    • H01J25/70—Tubes specially designed to act as oscillator with positive grid and retarding field, e.g. for Barkhausen-Kurz oscillators with resonator having distributed inductance with capacitance, e.g. Pintsch tube

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

433,026. Directive wireless signalling; thermionic valves. NAAMLOOZE VENNOOTSCHAP MACHINERIEEN-EN APPARATEN FABRIEKEN MEAF, 30, Croeselaan, Utrecht, Holland. Feb. 26, 1935, No. 6178. Convention date, March 3, 1934. [Classes 39 (i) and 40 (v)] An ultra short - wave aerial system comprises a quarter - wave rod - oscillator 2, which is an extension of the grid of a transmitting or receiving valve 4, and a parabolic series of quarter - wave reflectors 3 mounted on a plate 19 connected to the extension of the anode 5 of the valve. The valve is of the kind described in Specifications 428,258 and 429,863. The extension members 12, 14 form a transmission-line or coupling between the main aerial 2 and the valve 4. The valve is sealed at the top at 16 and at the bottom at 15 and 17 and evacuated. The cathode 8 is mounted inside a grid 7 which consists of bars mounted parallel to the axis of the aerial 2. For transmission the space 5 between the grid and anode is excited to resonance by the stream of electrons, and the resulting oscillations are fed to the aerial through the transmission line. To avoid radiation losses in the resonator, the lower end of the inner member 12 is formed into a plate 9 which is capacity-coupled to a flange 10 on the anode.
GB6178/35A 1934-03-03 1935-02-26 Improvements in or relating to apparatus for the directional transmission or reception of ultra-short electromagnetic waves Expired GB433026A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE433026X 1934-03-03

Publications (1)

Publication Number Publication Date
GB433026A true GB433026A (en) 1935-08-07

Family

ID=6497069

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6178/35A Expired GB433026A (en) 1934-03-03 1935-02-26 Improvements in or relating to apparatus for the directional transmission or reception of ultra-short electromagnetic waves

Country Status (4)

Country Link
US (1) US2061508A (en)
FR (1) FR786417A (en)
GB (1) GB433026A (en)
NL (1) NL40293C (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558727A (en) * 1942-07-01 1951-07-03 Edwin J Bernet Antenna
US2539477A (en) * 1945-01-24 1951-01-30 Rines Robert Harvey Portable radio telephone
US2555123A (en) * 1945-03-22 1951-05-29 John H Gardner Directional antenna
US2594871A (en) * 1945-07-09 1952-04-29 Us Sec War Antenna
US2501070A (en) * 1945-08-01 1950-03-21 Us Sec War Antenna
US2600274A (en) * 1945-10-10 1952-06-10 Sichak William Antenna
US2505751A (en) * 1946-09-27 1950-05-02 John T Bolljahn Broad band antenna
US2503278A (en) * 1947-03-21 1950-04-11 Raytheon Mfg Co Energy radiation apparatus
US3178713A (en) * 1961-03-08 1965-04-13 Andrew Corp Parabolic antenna formed of curved spaced rods

Also Published As

Publication number Publication date
NL40293C (en)
US2061508A (en) 1936-11-17
FR786417A (en) 1935-09-03

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