GB687194A - Improvements in or relating to circuits for generating superfrequency electrical oscillations and to discharge tubes for use therein - Google Patents

Improvements in or relating to circuits for generating superfrequency electrical oscillations and to discharge tubes for use therein

Info

Publication number
GB687194A
GB687194A GB6697/48A GB669748A GB687194A GB 687194 A GB687194 A GB 687194A GB 6697/48 A GB6697/48 A GB 6697/48A GB 669748 A GB669748 A GB 669748A GB 687194 A GB687194 A GB 687194A
Authority
GB
United Kingdom
Prior art keywords
anode
electrode
emission
voltage
electrodes
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
GB6697/48A
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
Philips Electronics 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, Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB687194A publication Critical patent/GB687194A/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
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/18—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance
    • H03B5/1817—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a cavity resonator
    • H03B5/1835—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a cavity resonator the active element in the amplifier being a vacuum tube
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/76—Dynamic electron-multiplier tubes, e.g. Farnsworth multiplier tube, multipactor

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microwave Tubes (AREA)

Abstract

687,194. Cathode-ray tubes. PHILIPS ELECTRICAL, Ltd. March 3, 1948 [March 6, 1947], No. 6697/48. Class 39(i) A circuit for generating high frequency oscillators of the kind embodying a discharge tube wherein a beam of electrons emitted by a cathode passes through an aperture in a plane anode inclined to the beam at an angle in the neighbourhood of 45 degrees and strikes a secondary emission electrode parallel to the anode, has the voltages on and distance between the anode and secondaryemission electrode such that, in the absence of oscillatory voltage, the primary electrons just impinge on the secondary-emission electrode and the time of transit between the secondary-emission electrode and the anode is in the neighbourhood of one whole period of the oscillations to be generated. In the construction shown in Fig. 1 the beam from the hollow cathode 6 passes through the focusing electrodes 7, 8 and an aperture 3 in the copper disc anode 2 to strike the part 5 of the secondary-emission electrode 4, the part 5 being at a distance of 1.5 mms. from the anode 2. A glass wall 10 is sealed on top of the secondaryemission electrode 4 to take a cooling liquid. In the construction shown in Fig. 2 two cathodes 13, 14 and two pairs of focusing means 15, 17, 16, 18 formed as bodies of revolution are provided. Two strips 20, 21 which function as a Lecher line terminate in parts which are parallel to the apertured anode 12 and are coated with caesium oxide to form secondary-emission electrodes. With a voltage on the anode of 1400 volts and on the secondary-emission electrodes of 700 volts, oscillations may be produced in a wave length range of from 3 to 5 cms., the efficiency being approximately 20 per cent at a wave length of 5 cms. The mean voltage on the secondary-emission electrode or electrodes is chosen such that, for the anode voltage obtaining, the secondary emission coefficient has approximately its maximum value. The ratio between the voltage on the secondaryemission electrode and that on the anode is preferably chosen to be substantially equal to the square of the sine of the angle which the electron beam makes with the anode plane.
GB6697/48A 1947-03-06 1948-03-03 Improvements in or relating to circuits for generating superfrequency electrical oscillations and to discharge tubes for use therein Expired GB687194A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL266223X 1947-03-06

Publications (1)

Publication Number Publication Date
GB687194A true GB687194A (en) 1953-02-11

Family

ID=19781732

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6697/48A Expired GB687194A (en) 1947-03-06 1948-03-03 Improvements in or relating to circuits for generating superfrequency electrical oscillations and to discharge tubes for use therein

Country Status (6)

Country Link
US (1) US2803778A (en)
BE (1) BE480960A (en)
CH (1) CH266223A (en)
FR (1) FR962892A (en)
GB (1) GB687194A (en)
NL (1) NL80440C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2030536A6 (en) * 1969-07-29 1970-11-13 Cit Alcatel

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL45407C (en) * 1934-02-23
US2170219A (en) * 1936-10-16 1939-08-22 Telefunken Gmbh Ultra high frequency oscillator
US2416303A (en) * 1941-02-05 1947-02-25 Bell Telephone Labor Inc Secondary emissive shell resonator tube
BE468391A (en) * 1941-03-11
US2581408A (en) * 1947-04-16 1952-01-08 Sperry Corp High-frequency electron discharge device

Also Published As

Publication number Publication date
CH266223A (en) 1950-01-15
BE480960A (en)
FR962892A (en) 1950-06-22
US2803778A (en) 1957-08-20
NL80440C (en)

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