GB594368A - Improvements in or relating to band stop filters for electromagnetic waves - Google Patents

Improvements in or relating to band stop filters for electromagnetic waves

Info

Publication number
GB594368A
GB594368A GB13730/45A GB1373045A GB594368A GB 594368 A GB594368 A GB 594368A GB 13730/45 A GB13730/45 A GB 13730/45A GB 1373045 A GB1373045 A GB 1373045A GB 594368 A GB594368 A GB 594368A
Authority
GB
United Kingdom
Prior art keywords
attenuation
wave
sides
guide
frame
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
GB13730/45A
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Publication of GB594368A publication Critical patent/GB594368A/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
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/207—Hollow waveguide 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

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Waveguides (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

594,368. Wave-guide filters. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. May 31, 1945, No. 13730. Convention date, Dec. 14, 1943. [Class 40 (iii)] A wave-guide is provided with a variable attenuator which can block a particular frequency. Inside a wave-guide having a rectangular cross-section C and conveying waves of the H01 type is mounted a rectangular frame A which can be rotated through gearing by means of a knob B2 and can be lengthened by turning a screw-threaded shaft L, the sides I, J being telescopic for this purpose and provided with interior springs. For H01 waves the attenuation is zero when the frame is transverse, but for other settings a peak of attenuation is reached for a particular length of the sides I, J, the attenuation being greatest when the frame is parallel to the sides of the waveguide.
GB13730/45A 1943-12-14 1945-05-31 Improvements in or relating to band stop filters for electromagnetic waves Expired GB594368A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR870588X 1943-12-14

Publications (1)

Publication Number Publication Date
GB594368A true GB594368A (en) 1947-11-10

Family

ID=9350483

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13730/45A Expired GB594368A (en) 1943-12-14 1945-05-31 Improvements in or relating to band stop filters for electromagnetic waves

Country Status (6)

Country Link
US (1) US2553313A (en)
BE (1) BE459108A (en)
CH (1) CH250785A (en)
DE (1) DE870588C (en)
FR (1) FR986934A (en)
GB (1) GB594368A (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2197123A (en) * 1937-06-18 1940-04-16 Bell Telephone Labor Inc Guided wave transmission
US2432093A (en) * 1942-07-30 1947-12-09 Bell Telephone Labor Inc Wave transmission network

Also Published As

Publication number Publication date
DE870588C (en) 1953-03-16
FR986934A (en) 1951-08-07
CH250785A (en) 1947-09-15
US2553313A (en) 1951-05-15
BE459108A (en)

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