EP0300147B1 - Anordnung zur Übertragung von Hochfrequenz-Signalen - Google Patents

Anordnung zur Übertragung von Hochfrequenz-Signalen Download PDF

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Publication number
EP0300147B1
EP0300147B1 EP88107005A EP88107005A EP0300147B1 EP 0300147 B1 EP0300147 B1 EP 0300147B1 EP 88107005 A EP88107005 A EP 88107005A EP 88107005 A EP88107005 A EP 88107005A EP 0300147 B1 EP0300147 B1 EP 0300147B1
Authority
EP
European Patent Office
Prior art keywords
openings
type
radio
frequency line
frequency
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
EP88107005A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0300147A1 (de
Inventor
Helmut Haag
Karl Schulze-Buxloh
Günter Dr. Thönnessen
Peter Zamzow
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.)
Kabel Rheydt AG
Original Assignee
Kabel Rheydt AG
AEG Kabel 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 Kabel Rheydt AG, AEG Kabel AG filed Critical Kabel Rheydt AG
Priority to AT88107005T priority Critical patent/ATE84640T1/de
Publication of EP0300147A1 publication Critical patent/EP0300147A1/de
Application granted granted Critical
Publication of EP0300147B1 publication Critical patent/EP0300147B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/203—Leaky coaxial lines

Definitions

  • the invention relates to an arrangement for transmitting high-frequency signals according to the preamble of claim 1.
  • Radiant cables are used to transmit high-frequency signals in areas with unfavorable propagation conditions. Waves are emitted from these cables, for example by providing openings in a coaxial line.
  • a radiating coaxial high-frequency cable is known from DE-OS 28 12 523.
  • a number of holes are provided in the outer conductor in order to achieve a uniform course of the radiation intensity in the axial direction. These holes form a pattern that is repeated periodically (leakage cable).
  • a radiating coaxial cable which has a multiplicity of slots which are inclined towards one another and which likewise aims at a sinusoidal spatial distribution of the energy of the radiated electrical waves.
  • the outer conductor in which the slots are made consists of a laminate tape consisting of an electrically conductive tape with a plurality of slots and a strip of a dielectric material with a low electrical dissipation factor. There is less electrical loss with this cable, but the bandwidth is only sufficient for the UHF band.
  • a leakage cable is known from US-A-3,648,172, which has a copper strip as outer conductor with two double rows of round holes. This cable is suspended between two traffic routes, so that one row of holes can supply the road users on one side of the cable, while the other side of the cable supplies the other road users with the holes arranged there. Although this cable can emit on both sides, it only has a limited bandwidth.
  • the leakage waves are primarily emitted through the openings above a typical cut-off frequency. Below the cut-off frequency of the cable, only a weak surface wave is excited due to the relatively small openings.
  • DE-B1-10 44 199 also discloses high-frequency lines with a continuous longitudinal slot (slotted cable). Surface waves are excited by the longitudinal slot.
  • a typical cut-off frequency does not exist, however, due to the sharp increase in cable loss with increasing frequency the range of application of these slotted cables is limited to the frequency range below 200 - 300 MHz. In addition, the cable attenuation and the radiation properties of the slotted cable due to environmental influences such. B. Deposits on the cable jacket are impaired.
  • the invention has for its object to provide a radiating cable with improved radiation properties.
  • a high-frequency line should be largely independent of environmental influences in terms of its radiation properties and emit a broad frequency band.
  • This object is achieved in an arrangement of the type mentioned according to the invention by the features characterized in claim 1.
  • the invention represents a combination of the design features of both principles, so that the good properties of the slotted cable in the lower frequency range and the advantages of the leakage cable come into play in the upper frequency range.
  • the combination of both principles makes it possible to make the longitudinal slot narrower than a pure slot cable (30 ° opening angle versus 80 °).
  • the high-frequency line is made up of an inner conductor 1, an outer jacket 2 and a dielectric 3.
  • the outer conductor is provided with openings.
  • these are in the form of periodic configurations of holes 4, the diameter of which is smaller than the diameter of the high-frequency line, and on the other hand, they are in the form of slots 5, which have a length which is greater than the diameter of the high-frequency line 6
  • the longitudinal slots have a width which is vertical when cut corresponds to an opening angle of, for example, 30 degrees to the axis. Holes and slots are arranged, for example, helically around the axis with a large stroke, so that there are holes and slots at a distance of a few meters on the side of the radio-frequency line facing the road.
  • a protective jacket 7 is extruded around the high-frequency line, which consists of a material with the lowest possible dielectric losses.
  • One such material is polyethylene.
  • a further preferred embodiment of the invention consists in making the slots very long compared to the diameter of the high-frequency line and, for example, only providing short conductive webs between the slots at large intervals. In the limit, vanishingly narrow webs or very long slots, there is only a single slot. This may be necessary for manufacturing technology reasons.
  • the longitudinal slot is also made helical, so that the outer conductor encompasses the dielectric better.
  • the helical arrangement ensures that the slot can radiate on the side facing away from the road and the other time on the side facing the road.
  • the radiating cable according to the invention is capable of producing as good and uniform a radiation as possible in a wide frequency range, for example in the much used bands (4 m, 2 m, 0.7 m band), with reduced environmental sensitivity.
  • the invention is mainly used for the transmission of messages in tunnels and for the transmission of signals for traffic management on trains, in the future also on roads and highways.
  • the radiating cable treated as an example in the description can of course also have more than two groups of longitudinal openings. For example, with 3 groups, the angular distance between two groups is 120 °.

Landscapes

  • Waveguide Aerials (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Details Of Aerials (AREA)
  • Burglar Alarm Systems (AREA)
  • Transplanting Machines (AREA)
  • Waveguides (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Surgical Instruments (AREA)
EP88107005A 1987-07-20 1988-05-02 Anordnung zur Übertragung von Hochfrequenz-Signalen Expired - Lifetime EP0300147B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88107005T ATE84640T1 (de) 1987-07-20 1988-05-02 Anordnung zur uebertragung von hochfrequenzsignalen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3723951 1987-07-20
DE19873723951 DE3723951A1 (de) 1987-07-20 1987-07-20 Anordnung zur uebertragung von hochfrequenz-signalen

Publications (2)

Publication Number Publication Date
EP0300147A1 EP0300147A1 (de) 1989-01-25
EP0300147B1 true EP0300147B1 (de) 1993-01-13

Family

ID=6331951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88107005A Expired - Lifetime EP0300147B1 (de) 1987-07-20 1988-05-02 Anordnung zur Übertragung von Hochfrequenz-Signalen

Country Status (10)

Country Link
EP (1) EP0300147B1 (no)
AT (1) ATE84640T1 (no)
DE (2) DE3723951A1 (no)
DK (1) DK168779B1 (no)
ES (1) ES2038237T3 (no)
FI (1) FI92891C (no)
IE (1) IE62259B1 (no)
IN (1) IN170111B (no)
NO (1) NO172778C (no)
PT (1) PT88031B (no)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10015379A1 (de) * 2000-03-28 2001-10-04 Alcatel Sa Abstrahlendes koaxiales Hochfrequenz-Kabel

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2235336B (en) * 1989-06-23 1994-05-11 Hunting Eng Ltd Communication via leaky cables
DE4106890A1 (de) * 1991-03-05 1992-09-10 Rheydt Kabelwerk Ag Strahlendes hochfrequenzkabel
USRE40587E1 (en) 1994-03-18 2008-11-25 Schneider (Europe) A.G. Antenna for magnetic resonance imaging and method of use
ES2114626T3 (es) * 1994-03-18 1998-06-01 Schneider Europ Ag Sistema de visualizacion de resonancias magneticas para localizar un instrumento medico.
US5809429A (en) * 1995-09-22 1998-09-15 Andrew Corporation Radiating coaxial cable and radio communication system using same
CA2239642C (en) * 1997-06-26 2001-05-29 Geza Dienes Antenna for radiating cable-to-vehicle communication systems
US5936203A (en) * 1997-10-15 1999-08-10 Andrew Corporation Radiating coaxial cable with outer conductor formed by multiple conducting strips
US6480163B1 (en) 1999-12-16 2002-11-12 Andrew Corporation Radiating coaxial cable having helically diposed slots and radio communication system using same
US6686890B2 (en) 2001-04-19 2004-02-03 Fox Broadcasting Company Slot-array antennas with shaped radiation patterns and a method for the design thereof
DE102013012551A1 (de) * 2013-07-25 2015-02-26 KATHREIN Sachsen GmbH Bodenantenne

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795915A (en) * 1972-10-20 1974-03-05 Sumitomo Electric Industries Leaky coaxial cable

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1552604A (no) * 1967-02-03 1969-01-03
US3648172A (en) * 1968-10-02 1972-03-07 Sumitomo Electric Industries Circular leaky waveguide train communication system
DE2230280A1 (de) * 1972-06-21 1974-01-17 Licentia Gmbh Offener wellenleiter zur breitbandigen funkversorgung
GB1424685A (en) * 1973-01-25 1976-02-11 Bicc Ltd Electric cables
DE2523925B2 (de) * 1975-05-30 1977-12-15 The Furukawa Electric Co. Ltd. Tokio Strahlendes uhf-koaxialkabel
DE2812523A1 (de) * 1978-03-22 1979-09-27 Kabel Metallwerke Ghh Abstrahlendes koaxiales hochfrequenz-kabel
DE2819095A1 (de) * 1978-04-29 1979-11-08 Kabel Metallwerke Ghh Abstrahlendes koaxiales hochfrequenz- kabel
US4325039A (en) * 1979-10-31 1982-04-13 Bicc Limited Leaky coaxial cable wherein aperture spacings decrease along the length of the cable

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795915A (en) * 1972-10-20 1974-03-05 Sumitomo Electric Industries Leaky coaxial cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10015379A1 (de) * 2000-03-28 2001-10-04 Alcatel Sa Abstrahlendes koaxiales Hochfrequenz-Kabel

Also Published As

Publication number Publication date
FI92891B (fi) 1994-09-30
FI883186A0 (fi) 1988-07-04
FI883186A (fi) 1989-01-21
DK255388D0 (da) 1988-05-10
DK255388A (da) 1989-01-21
FI92891C (fi) 1995-01-10
PT88031A (pt) 1989-06-30
IE882202L (en) 1989-01-20
DE3877445D1 (de) 1993-02-25
NO883211L (no) 1989-01-23
NO172778C (no) 1993-09-01
IE62259B1 (en) 1995-01-11
DK168779B1 (da) 1994-06-06
ATE84640T1 (de) 1993-01-15
NO172778B (no) 1993-05-24
ES2038237T3 (es) 1993-07-16
EP0300147A1 (de) 1989-01-25
NO883211D0 (no) 1988-07-19
DE3723951A1 (de) 1989-02-02
IN170111B (no) 1992-02-15
PT88031B (pt) 1994-01-31

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