GB640057A - Improvements in or relating to electromagnetic wave guides - Google Patents

Improvements in or relating to electromagnetic wave guides

Info

Publication number
GB640057A
GB640057A GB3456347A GB3456347A GB640057A GB 640057 A GB640057 A GB 640057A GB 3456347 A GB3456347 A GB 3456347A GB 3456347 A GB3456347 A GB 3456347A GB 640057 A GB640057 A GB 640057A
Authority
GB
United Kingdom
Prior art keywords
guide
wave
disc
relating
slot
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
GB3456347A
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.)
WALDEMAR ROSENBERG
Original Assignee
WALDEMAR ROSENBERG
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 WALDEMAR ROSENBERG filed Critical WALDEMAR ROSENBERG
Priority to GB3456347A priority Critical patent/GB640057A/en
Publication of GB640057A publication Critical patent/GB640057A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/22—Attenuating devices
    • H01P1/222—Waveguide attenuators

Landscapes

  • Motor Or Generator Cooling System (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

640,057. Electric attenuators. ROSENBERG, W., and BUCKINGHAM, J. Dec. 30, 1947, No. 34563. [Class 40 (viii)] A wave-guide attenliator or load comprises a disc 1 of lossy material, such as dust iron, protruding through a slot in the broad face of a wave-guide 4. To prevent overheating of the part within the guide, the disc is rotated at about 1500 r.p.m. on the shaft 2 of an electric motor, and cooling fins 7 are provided. The slot in the wave-guide has tapered ends to prevent mismatching, and is surrounded by a plate 6 of lossy material to absorb energy which leaks out. The attenuating effect may be increased by curving the wave-guide to conform with the periphery of the disc, thus increasing the length of the disc material within the guide (Fig. 4, not shown).
GB3456347A 1947-12-30 1947-12-30 Improvements in or relating to electromagnetic wave guides Expired GB640057A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3456347A GB640057A (en) 1947-12-30 1947-12-30 Improvements in or relating to electromagnetic wave guides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3456347A GB640057A (en) 1947-12-30 1947-12-30 Improvements in or relating to electromagnetic wave guides

Publications (1)

Publication Number Publication Date
GB640057A true GB640057A (en) 1950-07-12

Family

ID=10367188

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3456347A Expired GB640057A (en) 1947-12-30 1947-12-30 Improvements in or relating to electromagnetic wave guides

Country Status (1)

Country Link
GB (1) GB640057A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0966057A1 (en) * 1998-06-15 1999-12-22 TRT Lucent Technologies (SA) Variable attenuator for a rectangular waveguide
EP0966058A1 (en) * 1998-06-15 1999-12-22 TRT Lucent Technologies S.A. Variable attenuator for rectangular waveguides

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0966057A1 (en) * 1998-06-15 1999-12-22 TRT Lucent Technologies (SA) Variable attenuator for a rectangular waveguide
EP0966058A1 (en) * 1998-06-15 1999-12-22 TRT Lucent Technologies S.A. Variable attenuator for rectangular waveguides

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