GB634400A - Improvements in or relating to adjustable attenuating apparatus for high frequency electromagnetic energy - Google Patents

Improvements in or relating to adjustable attenuating apparatus for high frequency electromagnetic energy

Info

Publication number
GB634400A
GB634400A GB12384/47A GB1238447A GB634400A GB 634400 A GB634400 A GB 634400A GB 12384/47 A GB12384/47 A GB 12384/47A GB 1238447 A GB1238447 A GB 1238447A GB 634400 A GB634400 A GB 634400A
Authority
GB
United Kingdom
Prior art keywords
plate
relating
high frequency
line
electromagnetic energy
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
GB12384/47A
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.)
Sperry Gyroscope Co Inc
Original Assignee
Sperry Gyroscope Co Inc
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 Sperry Gyroscope Co Inc filed Critical Sperry Gyroscope Co Inc
Publication of GB634400A publication Critical patent/GB634400A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/22—Attenuating devices
    • H01P1/225—Coaxial attenuators

Landscapes

  • Magnetic Resonance Imaging Apparatus (AREA)
  • Waveguides (AREA)

Abstract

634,400. Coaxial transmission lines. SPERRY GYROSCOPE CO., Inc. May 7, 1947, No. 12384. Convention date, May 28, 1946. [Class 40 (viii)] An adjustable attenuator for a coaxial line comprises a plate 7 of resistive or energydissipating material, movable transversely to the length of the line through an opening in the outer conductor 5, more or less into the space between the conductors, and passing in close proximity to the inner conductor 6. The plate 7 is moved by a rack-and-pinion 11 and 12 operated by a control knob bearing a scale. In an alternative construction the inner conductor 6 is also slotted so that the path of plate 7 may pass therethrough. The edge of plate 7 is curved to avoid discontinuities in the line which cause reflections. The ends of the slot in the outer conductor may also be tapered for the same reason. Specification 617,919 is referred to.
GB12384/47A 1946-05-28 1947-05-07 Improvements in or relating to adjustable attenuating apparatus for high frequency electromagnetic energy Expired GB634400A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US672751A US2515228A (en) 1946-05-28 1946-05-28 Attenuating apparatus for highfrequency energy

Publications (1)

Publication Number Publication Date
GB634400A true GB634400A (en) 1950-03-22

Family

ID=24699855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12384/47A Expired GB634400A (en) 1946-05-28 1947-05-07 Improvements in or relating to adjustable attenuating apparatus for high frequency electromagnetic energy

Country Status (2)

Country Link
US (1) US2515228A (en)
GB (1) GB634400A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670461A (en) * 1949-09-29 1954-02-23 Sperry Corp Electromagnetic wave attenuator
NL94742C (en) * 1951-05-31
US2714706A (en) * 1951-07-23 1955-08-02 Univ Ohio State Res Found Power equalizer
NL113768C (en) * 1955-01-27
US2936417A (en) * 1955-04-06 1960-05-10 Sierra Electronic Corp Directional power monitor
US2842748A (en) * 1955-06-07 1958-07-08 Polytechnic Inst Brooklyn Coaxial cable attenuator
US2979678A (en) * 1955-10-20 1961-04-11 Merrimac Res And Dev Corp Microwave attenuators
US3046505A (en) * 1958-08-08 1962-07-24 Sanders Associates Inc High frequency attenuator
US3114104A (en) * 1959-01-12 1963-12-10 Fleming Bernard Microwave power determining apparatus using a resistive vane with electrical connections thereon for resistive measurement of the vane
US3065435A (en) * 1960-06-29 1962-11-20 Ibm Attenuators
US3070764A (en) * 1961-06-13 1962-12-25 Douglas Robert Harry Microwave apparatus
US3184694A (en) * 1963-05-20 1965-05-18 Weinschel Eng Co Inc Precision variable coaxial attenuator
US3218583A (en) * 1963-08-30 1965-11-16 Textron Inc High frequency attenuator with constant phase shift

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL33645C (en) * 1931-06-13
US2414785A (en) * 1942-01-29 1947-01-21 Sperry Gyroscope Co Inc High-frequency tube structure
US2399930A (en) * 1942-05-16 1946-05-07 Gen Electric Energy dissipator
US2426992A (en) * 1942-05-27 1947-09-09 Sperry Gyroscope Co Inc Glide path transmitter
US2401296A (en) * 1942-11-21 1946-06-04 Rca Corp Attenuator for coaxial transmission lines
US2452737A (en) * 1944-03-21 1948-11-02 Albert S Eisenstein Resistor
US2409599A (en) * 1944-04-28 1946-10-15 Philco Corp Coaxial line termination

Also Published As

Publication number Publication date
US2515228A (en) 1950-07-18

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