GB1062699A - Helically corrugated waveguides - Google Patents

Helically corrugated waveguides

Info

Publication number
GB1062699A
GB1062699A GB46132/64A GB4613264A GB1062699A GB 1062699 A GB1062699 A GB 1062699A GB 46132/64 A GB46132/64 A GB 46132/64A GB 4613264 A GB4613264 A GB 4613264A GB 1062699 A GB1062699 A GB 1062699A
Authority
GB
United Kingdom
Prior art keywords
guide
plane
extreme value
pitch angle
corrugated
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
GB46132/64A
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.)
Telefunken Patentverwertungs GmbH
Hackethal Draht Kabel Werke AG
Original Assignee
Telefunken Patentverwertungs GmbH
Hackethal Draht Kabel Werke AG
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 Telefunken Patentverwertungs GmbH, Hackethal Draht Kabel Werke AG filed Critical Telefunken Patentverwertungs GmbH
Publication of GB1062699A publication Critical patent/GB1062699A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00—Waveguides; Transmission lines of the waveguide type
    • H01P3/12—Hollow waveguides
    • H01P3/14—Hollow waveguides flexible
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00—Waveguides; Transmission lines of the waveguide type
    • H01P3/12—Hollow waveguides
    • H01P3/127—Hollow waveguides with a circular, elliptic, or parabolic cross-section

Landscapes

  • Waveguides (AREA)
  • Microwave Tubes (AREA)

Abstract

1,062,699. Waveguides. HACKETHALDRAHT-UND KABEL-WERKE A.G. and TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Nov. 12, 1964 [Nov. 12, 1963], No. 46132/64. Headings H1W. In helically corrugated waveguide, the pitch angle changes sign at least once along the length of the guide, the angle varying either continuously or in steps to pass through a plane in which it is zero, whereby to compensate for the rotation of the plane of polarization of a wave propagated along the corrugated guide. For transmission of a band having a mean wavelength #, the length over which the angle changes from an extreme value of one sign to an extreme value of the other is arranged to be an odd multiple of #/4, to reduce reflections. The guide, which may be of circular or elliptical cross-section, may include extended portions having the extreme value of pitch angle. Bends exhibiting little electrical distortion can be produced by bending the guide symmetrically about a plane of zero pitch angle, and arranging that the planes of successive turns of the corrugation, before bending, intersect in an axis which constitutes a mirror image, with respect to the guide, of the axis about which the guide is to be bent (Figs. 3 and 4, not shown). Reference is made to a prior art method of reducing the rotation of the plane of polarization in a corrugated guide by the successive decrease and increase in depth of the corrugation.
GB46132/64A 1963-11-12 1964-11-12 Helically corrugated waveguides Expired GB1062699A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH0050814 1963-11-12

Publications (1)

Publication Number Publication Date
GB1062699A true GB1062699A (en) 1967-03-22

Family

ID=7157495

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46132/64A Expired GB1062699A (en) 1963-11-12 1964-11-12 Helically corrugated waveguides

Country Status (3)

Country Link
US (1) US3345590A (en)
DE (1) DE1465643A1 (en)
GB (1) GB1062699A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4305460A (en) * 1979-02-27 1981-12-15 General Atomic Company Heat transfer tube
GB2043867B (en) * 1979-02-27 1983-11-30 Gen Atomic Co Heat transfer tube and method of making same
GB2143380A (en) * 1983-07-05 1985-02-06 Gabriel Microwave Syst Flexible waveguides
DE58901303D1 (en) * 1988-03-08 1992-06-11 Vsl Int Ag SHELL PIPE.
GB0306179D0 (en) * 2003-03-18 2003-04-23 Imp College Innovations Ltd Piping
GB0420971D0 (en) * 2004-09-21 2004-10-20 Imp College Innovations Ltd Piping
US7749462B2 (en) 2004-09-21 2010-07-06 Technip France S.A.S. Piping
US8029749B2 (en) 2004-09-21 2011-10-04 Technip France S.A.S. Cracking furnace
US20090162585A1 (en) * 2007-12-21 2009-06-25 Cook Incorporated Jejunal feeding tube
GB0817219D0 (en) 2008-09-19 2008-10-29 Heliswirl Petrochemicals Ltd Cracking furnace
US10584580B2 (en) 2017-10-23 2020-03-10 SharpKeen Enterprises, Inc. Electromagnetic surface wave communication in a pipe
EP3775652B1 (en) * 2018-03-29 2022-04-13 Dupont Polymers, Inc. Fluid duct
US10712113B1 (en) * 2019-07-30 2020-07-14 The United States Of America As Represented By The Secretary Of The Army Piecewise helical barrel fluting

Also Published As

Publication number Publication date
DE1465643A1 (en) 1969-10-02
US3345590A (en) 1967-10-03

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