GB562674A - Improvements in or relating to means for preventing or reducing the escape of high frequency energy - Google Patents

Improvements in or relating to means for preventing or reducing the escape of high frequency energy

Info

Publication number
GB562674A
GB562674A GB11693/41A GB1169341A GB562674A GB 562674 A GB562674 A GB 562674A GB 11693/41 A GB11693/41 A GB 11693/41A GB 1169341 A GB1169341 A GB 1169341A GB 562674 A GB562674 A GB 562674A
Authority
GB
United Kingdom
Prior art keywords
screen
quarter
flanges
aperture
shafts
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
GB11693/41A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB562674A publication Critical patent/GB562674A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/04—Coaxial resonators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/14—Leading-in arrangements; Seals therefor
    • H01J23/15—Means for preventing wave energy leakage structurally associated with tube leading-in arrangements, e.g. filters, chokes, attenuating devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/04—Fixed joints
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/202—Coaxial filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/06—Cavity resonators
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/0018—Casings with provisions to reduce aperture leakages in walls, e.g. terminals, connectors, cables

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Microwave Tubes (AREA)

Abstract

562,674. Wireless signalling apparatus. COLLARD, J. Sept. 12, 1941, Nos. 11693/41 and 748/42. [Class 40 (v)] In screened highfrequency electrical apparatus,undesired radiation through apertures and discontinuities in the screen is prevented by the introduction of quarter-wavelength sections at the discontinuities. Fig. 1 shows a pair of coaxial adjusting shafts 9, 10 passing through an aperture 4 in a screen 3 enclosing high-frequency apparatus. The shafts are each provided with three quarter-wave sections 11-13 and 14-16 respectively contained within a sleeve-like extension of the screen 3. The quarter-wave sections are closed at one end and present high impedances in series with the leakage path. This arrangement simultaneously prevents radiation through the aperture and propagation of energy along the shafts. A similar arrangement for a current lead passing through an aperture is also described. Fig. 2 shows the invention applied to a screen with a removable lid L which rests between quarterwave flanges r1, r2 and r3 on a base B. In this case, the space between the flanges may be filled with dielectric. Other modifications are described having a greater number of flanges which may be relatively displaced either radially or axially. In Fig. 3, the leakage path between a lid 18 and box 19 consists in the three quarterwave paths 20, 21 and 22.
GB11693/41A 1955-12-12 1941-09-12 Improvements in or relating to means for preventing or reducing the escape of high frequency energy Expired GB562674A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US552576A US2910613A (en) 1955-12-12 1955-12-12 Electron tube

Publications (1)

Publication Number Publication Date
GB562674A true GB562674A (en) 1944-07-12

Family

ID=24205929

Family Applications (2)

Application Number Title Priority Date Filing Date
GB11693/41A Expired GB562674A (en) 1955-12-12 1941-09-12 Improvements in or relating to means for preventing or reducing the escape of high frequency energy
GB16571/56A Expired GB834664A (en) 1955-12-12 1956-05-29 Improvements relating to electron tubes

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB16571/56A Expired GB834664A (en) 1955-12-12 1956-05-29 Improvements relating to electron tubes

Country Status (6)

Country Link
US (1) US2910613A (en)
CH (1) CH340912A (en)
DE (1) DE1128569B (en)
FR (1) FR1155168A (en)
GB (2) GB562674A (en)
NL (2) NL212892A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE947988C (en) * 1952-06-18 1956-08-23 Patelhold Patentverwertung Decoupling transformer for magnetron transmitter
US2947255A (en) * 1949-12-06 1960-08-02 John H Kuck Projectile choke
DE976253C (en) * 1952-04-10 1963-05-30 Standard Elek K Lorenz Ag Mixing arrangement for decimeter waves
WO2008089818A1 (en) * 2007-01-23 2008-07-31 Festo Ag & Co. Kg Actuator comprising a position measuring device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL239266A (en) * 1958-05-15
US3195007A (en) * 1960-10-28 1965-07-13 Litton Prec Products Inc Stagger-tuned klystron with cavities resonant outside passband

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US276571A (en) * 1883-05-01 Incandescent electric lamp
US1222916A (en) * 1916-10-24 1917-04-17 John Neilson Ionized-chamber device.
GB452573A (en) * 1934-01-26 1936-08-25 Porzellanfabrik Kahla Improvements in and relating to electric condensers
US2139447A (en) * 1934-09-19 1938-12-06 Siemens Ag Electric condenser
US2129008A (en) * 1936-05-20 1938-09-06 Bell Telephone Labor Inc Condenser
BE439918A (en) * 1939-11-29
US2410063A (en) * 1940-07-02 1946-10-29 Univ Leland Stanford Junior High-frequency tube structure and apparatus
US2391016A (en) * 1941-10-31 1945-12-18 Sperry Gyroscope Co Inc High-frequency tube structure
US2506590A (en) * 1941-10-31 1950-05-09 Sperry Corp High-frequency tube structure
NL137438B (en) * 1942-03-28
US2442662A (en) * 1942-04-15 1948-06-01 Bell Telephone Labor Inc High-frequency translating apparatus
BE480319A (en) * 1946-04-12
FR1012374A (en) * 1949-07-27 1952-07-09 Improvements in the construction of traveling wave electron tubes
US2634383A (en) * 1950-10-31 1953-04-07 Gen Electric Cavity resonator high-frequency electron discharge device
US2628328A (en) * 1950-12-22 1953-02-10 Westinghouse Electric Corp High power tube blocking condenser
US2619611A (en) * 1951-05-29 1952-11-25 Eitel Mccullough Inc Electron tube apparatus
US2803749A (en) * 1952-06-18 1957-08-20 Gen Electric Microwave oscillator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2947255A (en) * 1949-12-06 1960-08-02 John H Kuck Projectile choke
DE976253C (en) * 1952-04-10 1963-05-30 Standard Elek K Lorenz Ag Mixing arrangement for decimeter waves
DE947988C (en) * 1952-06-18 1956-08-23 Patelhold Patentverwertung Decoupling transformer for magnetron transmitter
WO2008089818A1 (en) * 2007-01-23 2008-07-31 Festo Ag & Co. Kg Actuator comprising a position measuring device
US20100011954A1 (en) * 2007-01-23 2010-01-21 Festo Ag & Co. Kg Actuator with Position Sensing Device

Also Published As

Publication number Publication date
GB834664A (en) 1960-05-11
CH340912A (en) 1959-09-15
NL212892A (en)
US2910613A (en) 1959-10-27
FR1155168A (en) 1958-04-23
NL67137C (en)
DE1128569B (en) 1962-04-26

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