EP0318198A1 - Dielektrischer Wellenleiter - Google Patents

Dielektrischer Wellenleiter Download PDF

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Publication number
EP0318198A1
EP0318198A1 EP88310757A EP88310757A EP0318198A1 EP 0318198 A1 EP0318198 A1 EP 0318198A1 EP 88310757 A EP88310757 A EP 88310757A EP 88310757 A EP88310757 A EP 88310757A EP 0318198 A1 EP0318198 A1 EP 0318198A1
Authority
EP
European Patent Office
Prior art keywords
dielectric waveguide
core
ptfe
cladding
waveguide according
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.)
Withdrawn
Application number
EP88310757A
Other languages
English (en)
French (fr)
Inventor
Kailash C. Garg
Joseph C. Rowan
Jeffrey A. Walter
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.)
WL Gore and Associates Inc
Original Assignee
WL Gore and Associates 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 WL Gore and Associates Inc filed Critical WL Gore and Associates Inc
Publication of EP0318198A1 publication Critical patent/EP0318198A1/de
Withdrawn legal-status Critical Current

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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
    • H01P3/16—Dielectric waveguides, i.e. without a longitudinal conductor

Definitions

  • This invention relates to a dielectric waveguide for the transmission of electromagnetic waves.
  • Electromagnetic fields are characterised by the presence of an electric field vector E orthogonal to a magnetic field vector H.
  • the oscillation of these components produces a resultant wave which travels in free space at the velocity of light and is transverse to both of these vectors.
  • Electromagnetic waves may exist in both unbounded media (free space) and bounded media (such as a coaxial cable or a waveguide).
  • This invention relates to the behaviour of electromagnetic energy in a bounded medium and, in particular, in a dielectric waveguide.
  • TM mn modes Another family of modes in standard rectangular waveguides are the TM mn modes, which are treated in the same way. They are differentiated by the fact that TE mn modes have no E z component, while TM mn modes have no H z component.
  • U.S. Patent 4,463,329 discloses a dielectric waveguide of a shaped article having a core of polytetrafluoroethylene and having one or more layers of expanded, porous polytetrafluoroethylene overwrapped on or around the core.
  • the dielectric waveguide disclosed in U.S. Patent 4,463,329 does not have such well-defined boundary conditions. In such a dielectric waveguide, fields will exist in the polytetrafluoroethylene (PTFE) cladding medium.
  • PTFE polytetrafluoroethylene
  • the absolute value of the decaying field at any point in the cladding is dependent upon a number of factors. These include the difference in dielectric constant between the core and cladding media, the frequency of operation, the physical dimensions involved and, of course, the applied field. On a given construction, more field will be induced in the cladding region at lower frequencies of operation. This effect is undesirable since the propagating wave becomes more "loosely bound" thus reducing stability characteristics and leading to a general deterioration in loss and VSWR performance.
  • one means of overcoming this problem is to increase the dielectric constant of the core by using materials other than PTFE as described in U.S. Patent 4,463,329.
  • the overall size of a waveguide may be reduced by using a smaller, higher dielectric constant core other than the PTFE as described in U.S. Patent 4,463,329.
  • a dielectric waveguide for the transmission of electromagnetic wave comprising a core of a solid plastic material, one or more layers of PTFE cladding overwrapped around said core, and an electromagnetic shielding layer covering said cladding.
  • the or each cladding layer may be extruded, unsintered PTFE; extruded, sintered PTFE; expanded, unsintered, porous PTFE; or expanded, sintered, porous PTFE.
  • Such cladding layer may contain a filler.
  • the shielding layer preferably is aluminised KAPTON (Registered Trade Mark) polyimide tape.
  • the dielectric waveguide may be further overwrapped with a tape of carbon-filled PTFE.
  • the core may be polystyrene, polychlorotrifluoro­ethylene, polyethylene, polypropylene, polysulfone or polycarbonate.
  • a dielectric waveguide for the transmission of electromagnetic waves comprising a core of a plastic material and having one or more layers of polytetrafluoroethylene (PTFE) cladding overwrapped around the core.
  • the core material is a material selected from the class consisting of polystyrene, polychlorotrifluoroethylene, polyethylene, poly­propylene, polysulfone and polycarbonate.
  • Figure 1 shows a dielectric waveguide according to the invention.
  • electromagnetic energy enters the launcher 20.
  • An impedance transformation is carried out in the taper 13 of the core 12 of waveguide 10 such that the energy is coupled efficiently into the core 12 of dielectric waveguide 10.
  • propagation takes place through the core 12 which is surrounded by cladding 14.
  • the core 12 is a plastic material and the cladding is polytetrafluoroethylene, preferably expanded, porous polytetrafluoroethylene tape oeverwrapped over core 12.
  • Propagation uses the core/cladding interface to harness the energy.
  • the core material is polystyrene, polychlorotrifluoro­ethylene, polyethylene, polypropylene, polysulfone or polycarbonate.
  • an electromagnetic shield 16 is provided as well as an external absorber 18.
  • the shield is preferably aluminized KAPTON (Registered Trade Mark) polyimide tape, and the absorber is preferably carbon-filled PTFE tape.
  • FIG. 2 shows rectangular plastic core 12 overwrapped with PTFE tape 14 and also shows shield layer 16 and absorber layer 18.

Landscapes

  • Waveguides (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Organic Insulating Materials (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Laminated Bodies (AREA)
EP88310757A 1987-11-27 1988-11-15 Dielektrischer Wellenleiter Withdrawn EP0318198A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12625087A 1987-11-27 1987-11-27
US126250 1987-11-27

Publications (1)

Publication Number Publication Date
EP0318198A1 true EP0318198A1 (de) 1989-05-31

Family

ID=22423817

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88310757A Withdrawn EP0318198A1 (de) 1987-11-27 1988-11-15 Dielektrischer Wellenleiter

Country Status (10)

Country Link
EP (1) EP0318198A1 (de)
JP (1) JPH01170101A (de)
AU (1) AU1886488A (de)
DK (1) DK657888A (de)
FI (1) FI885138A (de)
GB (1) GB2212989A (de)
IE (1) IE883452L (de)
IL (1) IL88213A0 (de)
NO (1) NO885083L (de)
PT (1) PT89066A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1160875A1 (de) * 2000-05-13 2001-12-05 Tyco Electronics AMP GmbH Elektrooptisches Bauelement mit einem metallbeschichteten Gehäuse
US20150236396A1 (en) * 2014-02-19 2015-08-20 California Institute Of Technology Dielectric waveguides splitter and hybrid/isolator for bidirectional link
WO2015180850A1 (en) * 2014-05-28 2015-12-03 Spinner Gmbh Flexible, bendable and twistable terahertz waveguide
WO2017023891A1 (en) * 2015-08-06 2017-02-09 Tyco Electronics Corporation Dielectric waveguide
WO2017023888A1 (en) * 2015-08-06 2017-02-09 Tyco Electronics Corporation Dielectric waveguide

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006029B (de) * 1954-05-24 1957-04-11 Siemens Ag Dielektrischer Wellenleiter zur UEbertragung von Oberflaechenwellen
GB1473655A (en) * 1974-11-15 1977-05-18 Post Office Dielectric waveguides
US4463329A (en) * 1978-08-15 1984-07-31 Hirosuke Suzuki Dielectric waveguide
US4525693A (en) * 1982-05-01 1985-06-25 Junkosha Company Ltd. Transmission line of unsintered PTFE having sintered high density portions

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1338384A (en) * 1969-12-17 1973-11-21 Post Office Dielectric waveguides

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006029B (de) * 1954-05-24 1957-04-11 Siemens Ag Dielektrischer Wellenleiter zur UEbertragung von Oberflaechenwellen
GB1473655A (en) * 1974-11-15 1977-05-18 Post Office Dielectric waveguides
US4463329A (en) * 1978-08-15 1984-07-31 Hirosuke Suzuki Dielectric waveguide
US4525693A (en) * 1982-05-01 1985-06-25 Junkosha Company Ltd. Transmission line of unsintered PTFE having sintered high density portions

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1160875A1 (de) * 2000-05-13 2001-12-05 Tyco Electronics AMP GmbH Elektrooptisches Bauelement mit einem metallbeschichteten Gehäuse
US20150236396A1 (en) * 2014-02-19 2015-08-20 California Institute Of Technology Dielectric waveguides splitter and hybrid/isolator for bidirectional link
US9478843B2 (en) * 2014-02-19 2016-10-25 California Institute Of Technology Dielectric waveguides splitter and hybrid/isolator for bidirectional link
WO2015180850A1 (en) * 2014-05-28 2015-12-03 Spinner Gmbh Flexible, bendable and twistable terahertz waveguide
EP2958187A1 (de) * 2014-05-28 2015-12-23 Spinner GmbH Flexibler, faltbarer und verdrehbarer Terahertzwellenleiter
US10079418B2 (en) 2014-05-28 2018-09-18 Spinner Gmbh Flexible terahertz waveguide comprising a dielectric waveguide core which is supported within a segmented tube by dielectric threads
WO2017023891A1 (en) * 2015-08-06 2017-02-09 Tyco Electronics Corporation Dielectric waveguide
WO2017023888A1 (en) * 2015-08-06 2017-02-09 Tyco Electronics Corporation Dielectric waveguide
CN106450628A (zh) * 2015-08-06 2017-02-22 泰科电子公司 介电波导管
US9899721B2 (en) 2015-08-06 2018-02-20 Te Connectivity Corporation Dielectric waveguide comprised of a dielectric cladding member having a core member and surrounded by a jacket member
US9899720B2 (en) 2015-08-06 2018-02-20 Te Connectivity Corporation Dielectric waveguide comprised of a cladding of oblong cross-sectional shape surrounding a core of curved cross-sectional shape

Also Published As

Publication number Publication date
PT89066A (pt) 1989-09-14
DK657888D0 (da) 1988-11-25
AU1886488A (en) 1989-06-01
DK657888A (da) 1989-05-28
NO885083L (no) 1989-05-29
JPH01170101A (ja) 1989-07-05
GB2212989A (en) 1989-08-02
NO885083D0 (no) 1988-11-15
IL88213A0 (en) 1989-06-30
FI885138A0 (fi) 1988-11-08
IE883452L (en) 1989-05-27
GB8826691D0 (en) 1988-12-21
FI885138A (fi) 1989-05-28

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