EP1139491B1 - Cable coaxial rayonnant haute fréquence - Google Patents

Cable coaxial rayonnant haute fréquence Download PDF

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Publication number
EP1139491B1
EP1139491B1 EP01440058A EP01440058A EP1139491B1 EP 1139491 B1 EP1139491 B1 EP 1139491B1 EP 01440058 A EP01440058 A EP 01440058A EP 01440058 A EP01440058 A EP 01440058A EP 1139491 B1 EP1139491 B1 EP 1139491B1
Authority
EP
European Patent Office
Prior art keywords
cable
openings
frequency
frequency range
row
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
EP01440058A
Other languages
German (de)
English (en)
Other versions
EP1139491A3 (fr
EP1139491A2 (fr
Inventor
Erhard Mahlandt
Mark Davies
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.)
Alcatel Lucent SAS
Nokia Inc
Original Assignee
Alcatel SA
Nokia 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 Alcatel SA, Nokia Inc filed Critical Alcatel SA
Publication of EP1139491A2 publication Critical patent/EP1139491A2/fr
Publication of EP1139491A3 publication Critical patent/EP1139491A3/fr
Application granted granted Critical
Publication of EP1139491B1 publication Critical patent/EP1139491B1/fr
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 a radiating coaxial radio-frequency cable, consisting of an inner conductor, a same surrounding dielectric and one arranged above the same, concentric with the inner conductor, tubular Outer conductor, wherein attached in the outer conductor separate openings are offset from each other along in the circumferential direction of the cable, in Lengthwise of the same mutually parallel generatrices in the on the entire length of the cable extending rows are arranged (EP 0 300 147 B1).
  • AHF cable Radiating coaxial radio frequency cables - hereinafter referred to as "AHF cable” -, act because of the in the following referred to as "slots" openings in Outer conductors practically do not require external urgent electromagnetic energy Antennas that communicate between relatively movable Enable recipients and broadcasters.
  • An essential application of AHF cables is the signal transmission in tunnels between transmitting and Receiving devices and preferably rail-bound vehicles.
  • the AHF cable should also allow trouble-free operation over long distances. she should therefore ensure a low attenuation of the signals to be transmitted and as far as possible have no reflection points.
  • the attenuation is the sum of the by the AHF cable itself specific cable loss and by the Radiation of RF energy resulting coupling attenuation.
  • the AHF cable according to the above-mentioned EP 0 300 147 B1 is for a provided broadband operation.
  • the outer conductor of the same are on one Mantle line mounted in a first row round holes, while on one circumferentially offset generatrix in a second row in Axial direction of the AHF cable extending slots are arranged.
  • the Holes are designed for a lower frequency range, while the Slots should serve for a higher frequency range.
  • This AHF cable is limited in its use to two frequency ranges. Measures for Influencing the attenuation of the AHF cable, in particular the Kopplungsdömpfung the same, are not provided.
  • the patent JP 10 145136 describes, for example, a cable with Zig-zag slits arranged in two parallel rows extending extend over the entire length of the cable.
  • US 4,322,699 and US 5,705,967 are radiating cables having a plurality of Openings in the outer conductor described.
  • the invention is based on the object, the above-described AHF cable so educate that it in a large frequency range a as uniform as possible coupling damping without disturbing resonance points having.
  • This AHF cable can be used without changing the slot arrangement for transmission of Signals are used in a wide frequency range, in particular also detects the frequencies of mobile radio.
  • Rows of the first row attached to repeating pattern with one for given the mobile lowest frequency of about 800 MHz.
  • the broadband on the other hand, is given by the equidistant slits, through which also lower ones Frequencies or frequency ranges can be transmitted without interference.
  • All Slots of the AHF cable complement each other in their effect so advantageous that the Coupling attenuation kept small throughout the frequency spectrum to be transmitted can be and has a nearly constant size. That is especially in the Frequency range of the mobile phone of importance, in which also no disturbing Resonance points occur.
  • the AHF cable can be produced in conventional technology, with a Allocation of the equidistant slots on two rows a substantial stabilization of the Bandes can be achieved, from which the outer conductor is formed.
  • Fig. 1 shows an AHF cable, for example, for signal transmission between stationary and mobile units can be laid in a railway tunnel. It has a Inner conductor 1, a dielectric 2 and a tubular, the inner conductor 1 concentric surrounding outer conductor 3.
  • the outer conductor 3 is, for example, as langsein Awarddes Metal band laid around the dielectric 3 so that the band edges each other overlap. You can, for example, by gluing, soldering or welding together be connected. But the band edges can also without overlapping each other be welded.
  • As external mechanical protection is a jacket 4 made of plastic, the can also be flame retardant.
  • Inner conductor 1 and outer conductor 3 are preferably made of copper.
  • the dielectric 2 can be carried out in conventional technology. So it can be a full dielectric, that can also be foamed, or to a cavity dielectric with a helix or to act with discs.
  • the dielectric 2 are preferably materials with a small dielectric loss factor used, for example polyethylene.
  • the Jacket 4 may for example consist of polyethylene or polyvinyl chloride.
  • the slots 5 have a in the illustrated embodiment rectangular clear cross section. Their length in the circumferential direction of the AHF cable is greater than its axial width. The slots 5 thus extend substantially in Circumferential direction of the AHF cable. You could place one after the rectangular one as well have externally curved, quasi-elliptical clear cross-section.
  • the slots 5 can in principle also at an angle deviating from 90 ° to the axis of the AHF cable run. This also applies to the slots 5 described below Embodiments of the AHF cable.
  • the slots 5 are in the embodiment of the AHF cable of FIG. 2 in two Rows R1 and R2 mounted on different generatrices of the AHF cable lie. In the first row R1, the slots 5 are in a repetitive one Pattern arranged with varying distances. This arrangement of the slots 5 is explained in more detail below with reference to FIG. 4.
  • the slots 5 of the second row R2 have along the entire length of the AHF cable a constant distance A from each other.
  • the distance A is from the highest frequency to be transmitted with the AHF cable dependent. To avoid interference, the distance A is less than half Wavelength of this highest frequency.
  • the inside width of the equidistant slots 5 of the second row R2 relatively large. Since their axial width is not arbitrarily large can be made, they have a correspondingly large extent in Circumferential direction. The mechanical stability of one with such large or long slots 5 provided outer conductor 3 of the AHF cable may be impaired in some cases become. In a preferred embodiment of the AHF cable, the equidistant slots 5 therefore in two separate, on different Generators lying rows R2 and R3 split. A corresponding Embodiment of the AHF cable is shown in FIGS. 3 and 4
  • the slots 5 are in the AHF cable according to FIGS. 3 and 4 in three rows R1, R2 and R3 arranged on three in the circumferential direction of the AHF cable against each other staggered, paraxial generatrices run.
  • the rows R1, R2 and R3 are in preferred embodiment each offset by 120 ° from each other.
  • the slots 5 are in all three rows R1, R2 and R3 along the entire length of the AHF cable available. In the rows R2 and R3, the slots 5 have the full length of the AHF cable the same distance A from each other, already explained for Fig. 2 is.
  • the slots 5 of the rows R2 and R3 preferably have the same dimensions.
  • the slots 5 are in a repetitive pattern arranged at variable distances from each other.
  • This pattern includes according to the illustrated embodiment belonging to a group G slots S1, S2, S3 and S4.
  • the slots 5 of the first row R1 serve to operate the mobile phone provided frequency range with a lowest frequency of, for example, 800 MHz.
  • the respective first slots S1 of the successive groups G have one Distance A1 from each other, which is half the wavelength ( ⁇ / 2) of the lowest Frequency of the frequency range corresponds.
  • the other slots S2, S3 and S4 of the successive groups G consider integer multiples of the lowest ones detected by the slots S1 Frequency of the frequency range.
  • the slot S2 is in each case at a distance A2 from Slit S1, which is one-eighth ( ⁇ / 8) of the wavelength of the lowest frequency of Frequency range corresponds. Thus, a frequency is considered equal to the Double the lowest frequency is.
  • the slot S3 has a distance A3 from the slot S1 equal to one twelfth ( ⁇ / 12) of the lowest frequency of the frequency range. It is thereby detected a frequency equal to three times the lowest frequency is.
  • the slot S3 also effectively includes the slot S4, the slot S2 of the same distance A3 has, as the slot S3 from the slot S1.
  • the coupling loss is over one ranging from 0 to 2400 MHz Frequency range shown. This is also the one used for mobile Frequency range detected in today's technology between about 800 MHz and 2400 MHz lies.
  • the curve K1 shows the course of the coupling loss for an AHF cable, the only slots 5 according to series R2 (FIG. 2) or according to rows R2 and R3 (FIGS. 3 and 4) Has.
  • the coupling loss increases with increasing frequency, which is not desirable.
  • the curve K2 shows the course of the coupling loss for an AHF cable, the only Slots has 5 rows R1.
  • the coupling loss in one area below about 800 MHz very high so that such an AHF cable in this Frequency range could not be meaningfully used.

Landscapes

  • Waveguide Aerials (AREA)
  • Waveguides (AREA)
  • Communication Cables (AREA)
  • Aerials With Secondary Devices (AREA)
  • Details Of Aerials (AREA)

Claims (4)

  1. Câble coaxial rayonnant à haute fréquence, composé d'un conducteur intérieur, d'un diélectrique qui entoure celui-ci et d'un conducteur extérieur tubulaire disposé sur le diélectrique de manière concentrique par rapport au conducteur intérieur, avec lequel des ouvertures espacées les unes des autres sont aménagées dans le conducteur extérieur, lesquelles sont disposées en rangées qui s'étendent sur toute la longueur du câble le long de génératrices décalées les unes des autres dans le sens du pourtour du câble et s'étendant parallèlement les unes aux autres dans le sens longitudinal de celui-ci, et avec lequel
    toutes les ouvertures (5) s'étendent pour l'essentiel dans le sens du pourtour du câble,
    les ouvertures (5) sont disposées en groupes (G) dans une première rangée (R1) pour utiliser une plage de fréquences employée dans la radiocommunication mobile selon un modèle qui se répète continuellement, et
    d'autres ouvertures (5) sont disposées sur toute la longueur du câble à des écarts constants entre elles en au moins une deuxième rangée (R2) qui se trouve sur une autre génératrice que les ouvertures (5) de la première rangée (R1),
    caractérisé en ce que
    les premières ouvertures (S1) respectives des groupes successifs, vues dans le sens axial du câble, présentent entre elles un écart (A1) correspondant à la moitié de la longueur d'onde de la fréquence la plus basse à transmettre de la plage de fréquences, et que dans chaque groupe (G) se trouvent au moins deux ouvertures supplémentaires (S2, S3, S4) qui sont disposées à des écarts différents pour tenir compte des multiples entiers de la fréquence la plus basse à transmettre de la plage de fréquences ; une deuxième ouverture (S2) qui présente par rapport à la première ouverture (S1) respective un écart (A2) correspondant au moins à un huitième de la moitié de la longueur d'onde de la fréquence la plus basse à transmettre de la plage de fréquences, et une troisième ouverture (S3) qui présente par rapport à la première ouverture respective (S1) un écart (A2) correspondant au moins à un douzième de la moitié de la longueur d'onde de la fréquence la plus basse à transmettre de la plage de fréquences,
    et que l'écart (A) entre les ouvertures (5) dans la deuxième rangée (R2) est inférieur à la moitié de la longueur d'onde de la fréquence la plus élevée à transmettre par le biais du câble.
  2. Câble selon la revendication 1, caractérisé en ce que les ouvertures (5) sont disposées à des écarts constants entre elles dans deux rangées séparées (R2, R3) sur des génératrices différentes.
  3. Câble selon la revendication 1, caractérisé en ce que dans chaque groupe (G) de la première range (R1) se trouve à chaque fois une ouverture (S4) supplémentaire qui présente par rapport à la deuxième ouverture (S2) un écart (A3) qui correspond au douzième de la longueur d'onde de la fréquence la plus basse à transmettre de la plage de fréquences.
  4. Câble selon l'une des revendications 1 à 3, caractérisé en ce que les ouvertures (5) présentent une section transversale interne rectangulaire.
EP01440058A 2000-03-28 2001-03-08 Cable coaxial rayonnant haute fréquence Expired - Lifetime EP1139491B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10015379A DE10015379A1 (de) 2000-03-28 2000-03-28 Abstrahlendes koaxiales Hochfrequenz-Kabel
DE10015379 2000-03-28

Publications (3)

Publication Number Publication Date
EP1139491A2 EP1139491A2 (fr) 2001-10-04
EP1139491A3 EP1139491A3 (fr) 2004-01-07
EP1139491B1 true EP1139491B1 (fr) 2005-09-28

Family

ID=7636693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01440058A Expired - Lifetime EP1139491B1 (fr) 2000-03-28 2001-03-08 Cable coaxial rayonnant haute fréquence

Country Status (9)

Country Link
US (1) US6426685B2 (fr)
EP (1) EP1139491B1 (fr)
CN (1) CN1229895C (fr)
AT (1) ATE305662T1 (fr)
AU (1) AU2649901A (fr)
BR (1) BR0101159A (fr)
CA (1) CA2342281A1 (fr)
DE (2) DE10015379A1 (fr)
ES (1) ES2248261T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101164193B (zh) * 2005-02-24 2010-04-21 韦里泰尔有限责任公司 射线放射电缆和包含在其中的射线放射元件
EP1739789B1 (fr) * 2005-06-30 2007-10-31 Institut Scientifique de Service Public Câble coaxial rayonnant
FR2947587A1 (fr) 2009-07-03 2011-01-07 Total Sa Procede d'extraction d'hydrocarbures par chauffage electromagnetique d'une formation souterraine in situ
EP2355246B1 (fr) * 2010-01-28 2018-11-28 Alcatel Lucent Câble de radiation avec rail de montage
IT202000005983A1 (it) * 2020-03-20 2021-09-20 Prysmian Spa Cavo coassiale radiante
CN112803168A (zh) * 2021-02-03 2021-05-14 江苏亨鑫科技有限公司 一种宽波束辐射漏泄同轴电缆

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE300147C (fr)
US3648172A (en) * 1968-10-02 1972-03-07 Sumitomo Electric Industries Circular leaky waveguide train communication system
DE2812523A1 (de) * 1978-03-22 1979-09-27 Kabel Metallwerke Ghh Abstrahlendes koaxiales hochfrequenz-kabel
DE3723951A1 (de) * 1987-07-20 1989-02-02 Rheydt Kabelwerk Ag Anordnung zur uebertragung von hochfrequenz-signalen
FR2623460B1 (fr) * 1987-11-20 1990-11-16 Alsthom Balise d'identification lors du passage d'un mobile en un point donne
BE1010528A5 (fr) * 1995-04-07 1998-10-06 Inst Scient De Service Public Ligne haute frequence rayonnante.
JPH10145136A (ja) * 1996-11-08 1998-05-29 Hitachi Cable Ltd 漏洩同軸ケーブル
DE19738381A1 (de) * 1997-09-03 1999-03-04 Alsthom Cge Alcatel Abstrahlendes koaxiales Hochfrequenz-Kabel
US6292072B1 (en) * 1998-12-08 2001-09-18 Times Microwave Systems, Division Of Smith Industries Aerospace And Defense Systems, Inc. Radiating coaxial cable having groups of spaced apertures for generating a surface wave at a low frequencies and a combination of surface and radiated waves at higher frequencies

Also Published As

Publication number Publication date
US20010054945A1 (en) 2001-12-27
DE50107535D1 (de) 2005-11-03
BR0101159A (pt) 2001-10-30
CA2342281A1 (fr) 2001-09-28
DE10015379A1 (de) 2001-10-04
EP1139491A3 (fr) 2004-01-07
US6426685B2 (en) 2002-07-30
EP1139491A2 (fr) 2001-10-04
ATE305662T1 (de) 2005-10-15
CN1229895C (zh) 2005-11-30
CN1319919A (zh) 2001-10-31
ES2248261T3 (es) 2006-03-16
AU2649901A (en) 2001-10-04

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