US3603905A - Symmetrical flexible waveguide - Google Patents

Symmetrical flexible waveguide Download PDF

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Publication number
US3603905A
US3603905A US856271A US3603905DA US3603905A US 3603905 A US3603905 A US 3603905A US 856271 A US856271 A US 856271A US 3603905D A US3603905D A US 3603905DA US 3603905 A US3603905 A US 3603905A
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US
United States
Prior art keywords
cross
waveguide
sectional profile
inner periphery
tube
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 - Lifetime
Application number
US856271A
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English (en)
Inventor
Erich Schuttloffel
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
Original Assignee
Telefunken Patentverwertungs GmbH
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Filing date
Publication date
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Publication of US3603905A publication Critical patent/US3603905A/en
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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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S138/00—Pipes and tubular conduits
    • Y10S138/11—Shape

Definitions

  • a waveguide twistable 021 the type which can be wound on a drum for simultaneously transmitting two mutually perpendicular linearly polarized electromagnetic waves comprises a metal tube which has a constant cross-sectional profile along its length. The profile is approximately square and has rounded corners and includes thin wall portions which extend along the entire length of the tube.
  • the thin wall portions are appropriately shaped to maintain the profile substantially symmetrical with respect to imaginary mutually perpendicular lines drawn across the said profiles from the center of each square side when the waveguide is bent about a given radius of curvature, or twisted through a given torsional anglev v WENWSEP WI invwmr' Erich scmW-m STll/ilh/lllliTlilillCl-tt.
  • This invention relates to waveguides for the simultaneously transmission of two perpendicular, linearly polarized electromagnetic waves, and more particularly, to such a waveguide which has an effective inner periphery which is approximately square, has rounded corners, and which is twistable and can be wound on a drum.
  • the waveguide as a seamless metal tube whose wall thickness is sufficiently thin along a constant cross-sectional profile so that the tube may remain substantially symmetrical with respect to imaginary mutually perpendicular lines drawn across the profiles from the center of each square side when the waveguide is bent about a given radius of curvature or twisted through a given torsional angle.
  • the single FllGURE of the drawing is a cross-sectional view through a waveguide constructed according to the present in vention.
  • the waveguide of the present invention is formed from a seamless drawn aluminum tube.
  • the inner periphery of the cross section of the waveguide has a constant profile which is substantially square with strongly rounded corners having a radius of curvature r.
  • the two perpendicular cross-sectional axes A and B are of the same length.
  • the wall has a different thickness at different points about the cross-sectional profile.
  • the walls are thicker in the area of the rounded corners and thinner in the area between the corners.
  • the minimum wall thickness marked d which is located in the middle of one of the square sides gradually increases to the maximum thickness d located at the comers.
  • the outer edges of the waveguide are constructed in a continuous pattern.
  • the inner surface it) of the tube has straight wall portions i2 which are substantially planar, or curved slightly outwardly in a similar manner to portions M, and curved portions M which are substantially round.
  • the curved portions M have a radius of curvature r, and continue until they meet the straight wall portions M.
  • the curved sections To of the outer surface TR have a radius of curvature R. These curved sections to continue in any way until they meet the other curved section of the outer surface lltt.
  • the inner straight wall portions T2 on opposite sides of the waveguide cross section are parallel to each other. Curved portions M and llb are curved symmetrically relative to axes A and T3 and remain symmetrical to these axes during bending or twisting.
  • the cross section also remains uniform through the deformed section. I I V
  • the possibility of bending or twisting such a waveguide is naturally highest for any given size if the shape of the cross section of its inner periphery is circular. The inner periphery deviates from the circular only to the extent that undesirable rotation of the fed-in waves is prevented.
  • the waveguide may be constructed as a seamless, extruded aluminum tube. Furthermore, it cah be utilized for the rapid construction of radio links as a feeder waveguide for antennas without requiring the use of elbows, angular pieces or the like. Accordingly it may be quickly and simply installed. The reflection points which occurred in known feeder lines constructed from a plurality of partial sections are eliminated.
  • a or B 40 mm A or B 40 mm.
  • a twistable flexible waveguide of the type which can be wound on a drum for the simultaneous transmission of two mutually perpendicular, linearly polarized electromagnetic waves comprising:
  • a thin-walled seamless aluminum tube having a cross-sec tional profile which is constant along its length; said cross-sectional profile of said tube having an inner periphery which is approximately square and has rounded corners, and an outer periphery which is formed with a continuous pattern; said thin wall of said tube having a thickness which varies along its cross-sectional profile so that it has a maximum thickness in the region of said rounded corners and a minimum thickness midway therebetween, whereby said cross-sectional profile is maintained substantially symmetrical with respect to imaginary mutually perpendicular lines drawn across said cross-sectional profile from the center of each square side when the waveguide is bent about a given radius of curva' ture or twisted through a given torsional angle.

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  • Waveguides (AREA)
  • Waveguide Aerials (AREA)
  • Waveguide Switches, Polarizers, And Phase Shifters (AREA)
US856271A 1968-10-05 1969-09-09 Symmetrical flexible waveguide Expired - Lifetime US3603905A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681801536 DE1801536A1 (de) 1968-10-05 1968-10-05 Biegsamer Hohlleiter

Publications (1)

Publication Number Publication Date
US3603905A true US3603905A (en) 1971-09-07

Family

ID=5709797

Family Applications (1)

Application Number Title Priority Date Filing Date
US856271A Expired - Lifetime US3603905A (en) 1968-10-05 1969-09-09 Symmetrical flexible waveguide

Country Status (5)

Country Link
US (1) US3603905A (de)
JP (1) JPS4814833B1 (de)
DE (1) DE1801536A1 (de)
FR (1) FR2020001A1 (de)
GB (1) GB1275940A (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3790905A (en) * 1970-12-03 1974-02-05 Licentia Gmbh Waveguide for simultaneously transmitting two electromagnetic waves
US3792386A (en) * 1972-04-07 1974-02-12 Siemens Ag Rectangular waveguide having shaped external contour preventing internal deformation during bending or twisting
US3875969A (en) * 1973-01-31 1975-04-08 Foxboro Co Alignment sleeves for flangeless flowmeters and the like
US6024130A (en) * 1997-05-26 2000-02-15 Totaku Industries, Inc. Synthetic resin pipe
US20060225804A1 (en) * 2003-02-25 2006-10-12 Oy Kwh Pipe Ab Hollow profile used in the manufacture of a pipe
US20070045497A1 (en) * 2005-08-31 2007-03-01 Illinois Tool Works Inc. Plastic coil separator
US20080072516A1 (en) * 2006-09-22 2008-03-27 Reynolds Glenn A Tubular structural member with non-uniform wall thickness
US20090217879A1 (en) * 2008-02-29 2009-09-03 Jeffrey Weisel Ribbed hose for milk extraction
US20100200100A1 (en) * 2009-02-09 2010-08-12 Lupke Manfred A A Non-circular pipe profile
US20110043422A1 (en) * 2009-08-19 2011-02-24 Microelectronics Technology Inc. Polarizer and Waveguide Antenna Apparatus Using the Same
US20170314544A1 (en) * 2016-04-29 2017-11-02 Saint-Gobain Performance Plastics Corporation Peristaltic pump tube with non-uniform lumen profile
US20180320801A1 (en) * 2017-05-02 2018-11-08 Unison Industries, Llc Turbine engine duct

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5555308Y2 (de) * 1974-12-18 1980-12-22
JPS55110529U (de) * 1979-01-24 1980-08-02
HU177317B (en) * 1979-05-21 1981-09-28 Finommech Vallalat Curved wave guide for transfering microwave signals

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1023163A (en) * 1911-02-02 1912-04-16 Charles Nicholas Monsarrat Hollow section.
US1839919A (en) * 1927-03-26 1932-01-05 Hall Charles Ward Seamless hollow metallic section and process of making the same
US1859259A (en) * 1929-07-08 1932-05-17 Chamberlain Electrical wiring conduit
US1928009A (en) * 1927-12-27 1933-09-26 Firm Dornier Metallbauten G M Hollow metal beam
US2406838A (en) * 1943-06-28 1946-09-03 Francis M Kepler Method of forming bent tubing
US2742930A (en) * 1946-01-08 1956-04-24 Champion Paper & Fibre Co Wave guide
US3205462A (en) * 1962-02-23 1965-09-07 Gen Electric Low-loss waveguide for propagation of h10 wave
US3239002A (en) * 1964-01-06 1966-03-08 Young Radiator Co Tube formation for structuring heatexchanger core-units
FR1462731A (fr) * 1965-01-05 1966-12-16 Btr Industries Ltd Tuyau en matière plastique flexible ou semi-rigide non susceptible de s'aplatir complètement
US3299374A (en) * 1964-04-04 1967-01-17 Telefunken Patent Asymmetrical waveguide
US3336544A (en) * 1964-07-18 1967-08-15 Telefunken Patent Waveguide
US3444487A (en) * 1965-10-01 1969-05-13 Telefunken Patent Waveguide having corrugated exterior and smooth metal coated interior

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1023163A (en) * 1911-02-02 1912-04-16 Charles Nicholas Monsarrat Hollow section.
US1839919A (en) * 1927-03-26 1932-01-05 Hall Charles Ward Seamless hollow metallic section and process of making the same
US1928009A (en) * 1927-12-27 1933-09-26 Firm Dornier Metallbauten G M Hollow metal beam
US1859259A (en) * 1929-07-08 1932-05-17 Chamberlain Electrical wiring conduit
US2406838A (en) * 1943-06-28 1946-09-03 Francis M Kepler Method of forming bent tubing
US2742930A (en) * 1946-01-08 1956-04-24 Champion Paper & Fibre Co Wave guide
US3205462A (en) * 1962-02-23 1965-09-07 Gen Electric Low-loss waveguide for propagation of h10 wave
US3239002A (en) * 1964-01-06 1966-03-08 Young Radiator Co Tube formation for structuring heatexchanger core-units
US3299374A (en) * 1964-04-04 1967-01-17 Telefunken Patent Asymmetrical waveguide
US3336544A (en) * 1964-07-18 1967-08-15 Telefunken Patent Waveguide
FR1462731A (fr) * 1965-01-05 1966-12-16 Btr Industries Ltd Tuyau en matière plastique flexible ou semi-rigide non susceptible de s'aplatir complètement
US3444487A (en) * 1965-10-01 1969-05-13 Telefunken Patent Waveguide having corrugated exterior and smooth metal coated interior

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Prodelin, AD in Microwave Journal 3-1968, p. 130 *

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3790905A (en) * 1970-12-03 1974-02-05 Licentia Gmbh Waveguide for simultaneously transmitting two electromagnetic waves
US3792386A (en) * 1972-04-07 1974-02-12 Siemens Ag Rectangular waveguide having shaped external contour preventing internal deformation during bending or twisting
JPS5446236U (de) * 1972-04-07 1979-03-30
US3875969A (en) * 1973-01-31 1975-04-08 Foxboro Co Alignment sleeves for flangeless flowmeters and the like
US6024130A (en) * 1997-05-26 2000-02-15 Totaku Industries, Inc. Synthetic resin pipe
US7770604B2 (en) * 2003-02-25 2010-08-10 Oy Kwh Pipe Ab Hollow profile used in the manufacture of a pipe
US20060225804A1 (en) * 2003-02-25 2006-10-12 Oy Kwh Pipe Ab Hollow profile used in the manufacture of a pipe
US20070045497A1 (en) * 2005-08-31 2007-03-01 Illinois Tool Works Inc. Plastic coil separator
US20080072516A1 (en) * 2006-09-22 2008-03-27 Reynolds Glenn A Tubular structural member with non-uniform wall thickness
US20090217879A1 (en) * 2008-02-29 2009-09-03 Jeffrey Weisel Ribbed hose for milk extraction
US7878222B2 (en) * 2008-02-29 2011-02-01 Beverly Sue Weisel Ribbed hose for milk extraction
US20100200100A1 (en) * 2009-02-09 2010-08-12 Lupke Manfred A A Non-circular pipe profile
US8146620B2 (en) * 2009-02-09 2012-04-03 Lupke Manfred Arno Alfred Non-circular pipe profile
US20110043422A1 (en) * 2009-08-19 2011-02-24 Microelectronics Technology Inc. Polarizer and Waveguide Antenna Apparatus Using the Same
US8354969B2 (en) * 2009-08-19 2013-01-15 Microelectronics Technology, Inc. Polarizer and waveguide antenna apparatus using the same
US20170314544A1 (en) * 2016-04-29 2017-11-02 Saint-Gobain Performance Plastics Corporation Peristaltic pump tube with non-uniform lumen profile
US10557465B2 (en) * 2016-04-29 2020-02-11 Saint-Gobain Performance Plastics Corporation Peristaltic pump tube with non-uniform lumen profile
US20180320801A1 (en) * 2017-05-02 2018-11-08 Unison Industries, Llc Turbine engine duct
US10948108B2 (en) * 2017-05-02 2021-03-16 Unison Industries, Llc Turbine engine duct

Also Published As

Publication number Publication date
JPS4814833B1 (de) 1973-05-10
GB1275940A (en) 1972-06-01
DE1801536A1 (de) 1971-01-21
FR2020001A1 (de) 1970-07-10

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