EP0902499A1 - Cable coaxial haute fréquence rayonnant - Google Patents

Cable coaxial haute fréquence rayonnant Download PDF

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Publication number
EP0902499A1
EP0902499A1 EP98402038A EP98402038A EP0902499A1 EP 0902499 A1 EP0902499 A1 EP 0902499A1 EP 98402038 A EP98402038 A EP 98402038A EP 98402038 A EP98402038 A EP 98402038A EP 0902499 A1 EP0902499 A1 EP 0902499A1
Authority
EP
European Patent Office
Prior art keywords
slots
sections
cable
length
outer conductor
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Withdrawn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
EP98402038A
Other languages
German (de)
English (en)
Inventor
Erhard Dipl.-Ing. Mahlandt
Karl Dipl.-Ing. Schulze-Buxloh
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 CIT SA
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel SA
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 CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Publication of EP0902499A1 publication Critical patent/EP0902499A1/fr
Withdrawn legal-status Critical Current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 with openings in the outer conductor, which is arranged as essentially perpendicular to the axis of the cable Slits are formed and attached in sections along the length of the cable are arranged in a row without gaps and their axial length depending on the transmitting high-frequency energy is dimensioned, the number of slots in the further Sections away from the feed point of the high-frequency energy are larger than in the sections closer to the feed point is (EP 0 643 438 A1).
  • AHF cables Radiating coaxial high-frequency cables - hereinafter referred to as "AHF cables” - act because of the penetrating through the slots in the outer conductor to the outside electromagnetic energy practically as antennas that communicate between relatively enable mutually movable receivers and transmitters.
  • AHF cables results through the cable attenuation (longitudinal attenuation) and the radiation (coupling attenuation) of RF energy a decrease in the intensity of the radiated power over the cable length.
  • system damping as the sum of longitudinal damping and Coupling loss - for example between a vehicle antenna and an AHF cable from the feed point of the HF energy into the AHF cable with increasing cable length increases.
  • the reception field strength for one moved along the AHF cable Receiver can be kept at least approximately constant, for example, from the the AHF cable known from DE 41 06 890 A1 compensates for the influence of Longitudinal damping made by a special slot configuration. It will achieved that the number of slots along the cable increases according to a predetermined rule. Compared to an AHF cable with an even arrangement of the slots, this can be done Cables can also be extended. Nevertheless, the length of the AHF cable remains along the one "usable" signal can be received or coupled, especially at higher ones becoming operating frequencies relatively short.
  • a longer length is used when using the known AHF cable according to the above EP 0 643 438 A1 is possible.
  • This AHF cable has sections with slots different numbers attached in a row. The electrically effective size of the through The slots formed will increase with distance from the feed point RF energy greater.
  • the longer length of the AHF cable with compensated longitudinal damping leads to increased flexibility in the coordination of the respective properties of the Transmission system. There are also fewer amplifiers or dining places in the course the cable route required.
  • This AHF cable has proven itself in practice. Its im described meaning "usable" length is always especially at higher frequencies still limited.
  • the invention is based on the object, the AHF cable described above to further develop that a further increase in its length without the use of amplifiers and dining places is possible, especially at higher frequencies.
  • This AHF cable can be used without an amplifier or additional RF energy feed bridgeable length can be easily increased further.
  • the with increasing Distance from the feed point of the HF energy increasing opening in the Outer conductor of the AHF cable is achieved by an increasing number of slots that can have different sizes. So it can also be advantageous for axial frequency-dependent relatively short sections of the AHF cable larger slots in sufficient numbers each Section in the outer conductor to be attached to the target "larger opening with increasing Distance from the feed point ". To do this, it is preferred to continue in the Sections away from the feed point only produce slots in the outer conductor which have a relatively large length in the circumferential direction.
  • An AHF cable constructed in this way has also advantages in terms of production technology, since the slots, for example, have only two different punching tools can be generated. For example initially only smaller slots and then only longer slots are punched. It is but it is also possible to nest sections with slots of different lengths.
  • Fig. 1 shows an AHF cable, for example for signal transmission between stationary and mobile units can be installed in a train tunnel. It has an inner conductor 1, a Dielectric 2 and a tubular, concentrically surrounding the inner conductor 1 Outer conductor 3.
  • the outer conductor 3 is, for example, a longitudinally running metal band around the Dielectric 2 3 put around that the band edges overlap each other. You can for example, be connected to one another by gluing, soldering or welding.
  • the Band edges can also be welded together without overlap.
  • a jacket 4 made of plastic, which can also be flame-retardant.
  • Inner conductor 1 and outer conductor 3 are preferably made of copper.
  • the dielectric 2 can in usual technology. So it can be a full dielectric that too can be foamed, or around a cavity dielectric with a helix or with washers act. Materials with a small size are preferably used for the dielectric 2 dielectric loss factor used, for example polyethylene.
  • the coat 4 can consist for example of polyethylene or polyvinyl chloride.
  • slots 5 are made, the length of which is shown in the circumferential direction Embodiment is larger than its axial width.
  • the outer conductor 3 has a variety of Sections A, which lie one behind the other in the longitudinal direction of the AHF cable. There are several sections A with the same number of slots 5 directly one behind the other arranged. Because of the slots 5 can be outside of the AHF cable using a suitable Antenna RF energy can be received. It can be in the opposite RF energy can also be coupled into the AHF cable.
  • a unit length of the AHF cable includes all sections A with the same number of slots 5.
  • the axial length of the sections A depends on the frequency of the RF energy fed into the AHF cable. The higher the Frequency is, the shorter are the sections A. In all applications, the basic design and arrangement of the slots 5 but be the same.
  • the number of slots 5 per section A is increased each time the level of the received signal is one has reached or fallen below the specified value. This can dampen the system between the AHF cable and an antenna located or moving outside of it are maintained at a predetermined value with great accuracy.
  • An AHF cable with slots 5 per section A looks like this, for example:
  • Section A has, for example, for the frequency range 1800 MHz (1710 MHz to 1920 MHz) a length of 8.5 cm. Are on a length (unit of length) of about 100 m Sections A are arranged one behind the other, each having a slot 5. There are about 590 sections with only one slot 5 in a row. One follows completely Length unit of about 90 m in length with two slots 5 per section A. So that's about 530 sections A. In the next unit of length of about 75 m, each section has A four slots. Accordingly, this unit of length has about 440 sections A. Finally follow sections A with eight slots 5 each over a length of about 55 m. This unit of length thus has approximately 320 sections A. The corresponding AHF cable is approximately 320 m long.
  • Fig. 3 is a preferred embodiment for the arrangement of the slots 5 in the outer conductor 3 reproduced.
  • the sections A all have the same axial length.
  • the AHF cable can be a total of about 500 m long in this embodiment.
  • All slots 6 and 7 preferably have the same axial Width.
  • the slots 7 are longer than the slots 6 in the circumferential direction of the AHF cable.
  • only one section A is again drawn per slot number. This one too
  • the embodiment is again a larger number of sections A of the same structure arranged one behind the other, as explained in principle for FIG. 2.
  • FIG. 4 shows a complete diagram for the exemplary embodiment of FIG Slot arrangement emerges. There is a suitable number of each with one different numbers of slots 6 and 7 provided sections A1 to A8, respectively arranged one behind the other. The illustration selected in FIG. 3 thus shows only the arrangement of the Slots in each section.
  • the distance between the two Slit S1 and S2 firmly in section A1.
  • it corresponds to a quarter of the Wavelength of the RF egg to be transmitted.
  • This distance is also in sections A2 maintained until A8.
  • sections A4 and A8 therefore, a maximum of sixteen slots 6 or 7 are attached, even if the corresponding section itself is longer. It fit but for spatial reasons only seven slots 6 and 7 between the two slots S1 and S2, so that sixteen slots 6 and 7 result for reasons of symmetry.
  • the slots 6 and 7 can also be arranged differently than shown in Fig. 4. In the first sections A only one slot should be attached. In the last sections A then there should also be enough slots next to one another that the entire length of these sections A is equipped with slots 6 and 7 respectively.
  • the slots can then be arranged according to size - analogous to FIGS. 3 and 4 - in the outer conductor 3 or in a nested form.
  • the length of the sections A in an AHF cable can be variable, so that the respective slot arrangements are closer together follow or have a greater distance from each other.
  • the metal strip used for the outer conductor 3 is used to produce the AHF cable should be provided, preferably in a prefabrication with the slots 5 or 6 and 7. To do this, the respective slots are continuously removed from the metal strip punched out.

Landscapes

  • Waveguide Aerials (AREA)
  • Waveguides (AREA)
EP98402038A 1997-09-03 1998-08-11 Cable coaxial haute fréquence rayonnant Withdrawn EP0902499A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19738381A DE19738381A1 (de) 1997-09-03 1997-09-03 Abstrahlendes koaxiales Hochfrequenz-Kabel
DE19738381 1997-09-03

Publications (1)

Publication Number Publication Date
EP0902499A1 true EP0902499A1 (fr) 1999-03-17

Family

ID=7840995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98402038A Withdrawn EP0902499A1 (fr) 1997-09-03 1998-08-11 Cable coaxial haute fréquence rayonnant

Country Status (7)

Country Link
US (1) US6246005B1 (fr)
EP (1) EP0902499A1 (fr)
JP (1) JP4127905B2 (fr)
KR (1) KR19990029384A (fr)
CN (1) CN1126193C (fr)
DE (1) DE19738381A1 (fr)
NO (1) NO984022L (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1107357A1 (fr) * 1999-11-30 2001-06-13 Alcatel Cable coaxial rayonnant haute fréquence
EP1139491A2 (fr) * 2000-03-28 2001-10-04 Alcatel Cable coaxial rayonnant haute fréquence

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020085105A (ko) * 2001-05-04 2002-11-16 한국항공우주연구원 단락 종단된 동축 슬롯 결합 스트립 배열 안테나
EP1742298A1 (fr) * 2005-06-30 2007-01-10 Institut Scientifique de Service Public Câble coaxial rayonnant
EP1739789B1 (fr) 2005-06-30 2007-10-31 Institut Scientifique de Service Public Câble coaxial rayonnant
JP4328814B2 (ja) 2007-05-25 2009-09-09 三菱電機株式会社 同軸給電スロットアレイアンテナおよび車両用レーダ装置
CN101441908B (zh) * 2008-12-31 2011-04-20 北京交通大学 具有编码自定位功能的漏泄同轴及其制作方法
JP5162713B1 (ja) * 2012-04-26 2013-03-13 株式会社フジクラ 漏洩同軸ケーブル
KR101336833B1 (ko) 2013-02-01 2013-12-04 한국표준과학연구원 방호시설 차폐효과 감시 시스템
JP2015061215A (ja) * 2013-09-19 2015-03-30 株式会社フジクラ 無線通信システム
JP2015080010A (ja) * 2013-10-15 2015-04-23 株式会社フジクラ アンテナ及びダイバーシチ通信システム
IT202000005983A1 (it) * 2020-03-20 2021-09-20 Prysmian Spa Cavo coassiale radiante

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2420857A1 (fr) * 1978-03-22 1979-10-19 Kabel Metallwerke Ghh Cable a haute frequence coaxial a rayonnement
EP0028500A1 (fr) * 1979-10-31 1981-05-13 BICC Public Limited Company Câbles électriques à haute-fréquence et procédé pour les fabriquer
EP0502337A1 (fr) * 1991-03-05 1992-09-09 KABEL RHEYDT Aktiengesellschaft Câble rayonnant à haute fréquence
EP0643438A1 (fr) * 1993-09-14 1995-03-15 KABEL RHEYDT Aktiengesellschaft Câble rayonant pour signaux à haute fréquence
EP0694986A1 (fr) * 1994-07-27 1996-01-31 Cables Cortaillod S.A. Câble coaxial rayonnant

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3106713A (en) * 1962-01-26 1963-10-08 Furukawa Electric Co Ltd Slot antenna having short radiating slots and long nonradiating distributed capacitance tuning slot
GB1597125A (en) * 1977-08-24 1981-09-03 Bicc Ltd Radiating cables
US4800351A (en) * 1987-09-10 1989-01-24 Andrew Corporation Radiating coaxial cable with improved flame retardancy
FR2685549B1 (fr) * 1991-12-19 1994-01-28 Alcatel Cable Ligne haute frequence rayonnante.
US5422614A (en) * 1993-02-26 1995-06-06 Andrew Corporation Radiating coaxial cable for plenum applications
BE1010528A5 (fr) * 1995-04-07 1998-10-06 Inst Scient De Service Public Ligne haute frequence rayonnante.
US5809429A (en) * 1995-09-22 1998-09-15 Andrew Corporation Radiating coaxial cable and radio communication system using same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2420857A1 (fr) * 1978-03-22 1979-10-19 Kabel Metallwerke Ghh Cable a haute frequence coaxial a rayonnement
EP0028500A1 (fr) * 1979-10-31 1981-05-13 BICC Public Limited Company Câbles électriques à haute-fréquence et procédé pour les fabriquer
EP0502337A1 (fr) * 1991-03-05 1992-09-09 KABEL RHEYDT Aktiengesellschaft Câble rayonnant à haute fréquence
DE4106890A1 (de) * 1991-03-05 1992-09-10 Rheydt Kabelwerk Ag Strahlendes hochfrequenzkabel
EP0643438A1 (fr) * 1993-09-14 1995-03-15 KABEL RHEYDT Aktiengesellschaft Câble rayonant pour signaux à haute fréquence
EP0694986A1 (fr) * 1994-07-27 1996-01-31 Cables Cortaillod S.A. Câble coaxial rayonnant

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1107357A1 (fr) * 1999-11-30 2001-06-13 Alcatel Cable coaxial rayonnant haute fréquence
EP1139491A2 (fr) * 2000-03-28 2001-10-04 Alcatel Cable coaxial rayonnant haute fréquence
DE10015379A1 (de) * 2000-03-28 2001-10-04 Alcatel Sa Abstrahlendes koaxiales Hochfrequenz-Kabel
US6426685B2 (en) 2000-03-28 2002-07-30 Alcatel Radiating coaxial radio-frequency cable
EP1139491A3 (fr) * 2000-03-28 2004-01-07 Alcatel Cable coaxial rayonnant haute fréquence

Also Published As

Publication number Publication date
CN1210376A (zh) 1999-03-10
CN1126193C (zh) 2003-10-29
KR19990029384A (ko) 1999-04-26
JPH11136026A (ja) 1999-05-21
JP4127905B2 (ja) 2008-07-30
NO984022L (no) 1999-03-04
DE19738381A1 (de) 1999-03-04
US6246005B1 (en) 2001-06-12
NO984022D0 (no) 1998-09-02

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