EP1139491B1 - Abstrahlendes koaxiales Hochfrequenzkabel - Google Patents
Abstrahlendes koaxiales Hochfrequenzkabel Download PDFInfo
- 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
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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)
- Aerials With Secondary Devices (AREA)
- Communication Cables (AREA)
- Details Of Aerials (AREA)
Description
- dass alle Schlitze sich im wesentlichen in Umfangsrichtung des Kabels erstrecken,
- dass Schlitze in einer ersten Reihe zur Bedienung eines im Mobilfunk verwendeten Frequenzbereichs in einem sich ständig wiederholenden Muster in Gruppen angeordnet sind, und
- dass weitere Schlitze in mindestens einer zweiten Reihe, die auf einer anderen Mantellinie als die Schlitze der ersten Reihe liegen, auf der ganzen Länge des Kabels mit einem gleichbleibenden Abstand zueinander angeordnet sind,
- dass die jeweils ersten Schlitze aufeinanderfolgender Gruppen in Achsrichtung des Kabels gesehen einen der halben Wellenlänge der niedrigsten zu übertragenden Frequenz des Frequenzbereichs entsprechenden Abstand voneinander haben, und dass in jeder Gruppe zumindest zwei weitere Schlitze angebracht sind, die zur Berücksichtigung von ganzzahligen Vielfachen der niedrigsten zu übertragenden Frequenz des Frequenzbereichs in unterschiedlichen Abständen angeordnet sind; eine zweite Schlitze, die von der jeweils ersten Schlitze einen Abstand hat, welcher zumindest einem Achtel der Wellenlänge der niedrigsten zu übertragenden Frequenz des Frequenzbereichs entspricht, und eine dritte Schlitze, die von der jeweils ersten Schlitze einen Abstand hat, welcher zumindest einem Zwölftel der Wellenlänge der niedrigsten zu übertragenden Frequenz des Frequenzbereichs entspricht, und
- dass der Abstand der Schlitze in der zweiten Reihe kleiner als die halbe Wellenlänge der höchsten über das Kabel zu übertragenden Frequenz ist.
Claims (4)
- Abstrahlendes koaxiales Hochfrequenz-Kabel, bestehend aus einem Innenleiter, einem denselben umgebenden Dielektrikum und einem über demselben angeordneten, zum Innenleiter konzentrischen, rohrförmigen Aussenleiter, bei welchem im Aussenleiter voneinander getrennte Öffnungen angebracht sind, die entlang von in Umfangsrichtung des Kabels gegeneinander versetzten, in Längsrichtung desselben parallel zueinander verlaufenden Mantellinien in sich über die ganze Länge des Kabels erstreckenden Reihen angeordnet sind, und bei demalle Öffnungen (5) sich im wesentlichen in Umfangsrichtung des Kabels erstrecken,Öffnungen (5) in einer ersten Reihe (R1) zur Bedienung eines im Mobilfunk verwendeten Frequenzbereichs in einem sich ständig wiederholenden Muster in Gruppen (G) angeordnet sind, undweitere Öffnungen (5) in mindestens einer zweiten Reihe (R2), die auf einer anderen Mantellinie als die Öffnungen (5) der ersten Reihe (R1) liegen, auf der ganzen Länge des Kabels mit einem gleichbleibenden Abstand zueinander angeordnet sind,
die jeweils ersten Öffnungen (S1) aufeinanderfolgender Gruppen in Achsrichtung des Kabels gesehen einen der halben Wellenlänge der niedrigsten zu übertragenden Frequenz des Frequenzbereichs entsprechenden Abstand (A1) voneinander haben, und dass in jeder Gruppe (G) zumindest zwei weitere Öffnungen (S2, S3, S4) angebracht sind, die zur Berücksichtigung von ganzzahligen Vielfachen der niedrigsten zu übertragenden Frequenz aes Frequenzbereichs in unterschiedlichen Abständen angeordnet sind; eine zweite Öffnung (S2), die von der jeweils ersten Öffnung (S1) einen Abstand (A2) hat, welcher zumindest einem Achtel der Wellenlänge der niedrigsten zu übertragenden Frequenz des Frequenzbereichs entspricht, und eine dritte Öffnung (S3), die von der jeweils ersten Öffnung (S1) einen Abstand (A3) hat, welcher zumindest einem Zwölftel der Wellenlänge der niedrigsten zu übertragenden Frequenz des Frequenzbereichs entspricht,
und dass der Abstand (A) der Öffnungen (5) in der zweiten Reihe (R2) kleiner als die halbe Wellenlänge der höchsten über das Kabel zu übertragenden Frequenz ist. - Kabel nach Anspruch 1, dadurch gekennzeichnet, dass die Öffnungen (5) mit gleichbleibendem Abstand voneinander in zwei separaten Reihen (R2, R3) auf unterschiedlichen Mantellinien angeordnet sind.
- Kabel nach Anspruch 1, dadurch gekennzeichnet, dass in jeder Gruppe (G) der ersten Reihe (R1) jeweils eine weitere Öffnung (S4) angebracht ist, die von der zweiten Öffnung (S2) einen Abstand (A3) hat, welcher einem Zwölftel der Wellenlänge der niedrigsten zu übertragenden Frequenz des Frequenzbereichs entspricht.
- Kabel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Öffnungen (5) einen rechteckigen lichten Querschnitt haben.
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 (de) | 2001-10-04 |
EP1139491A3 EP1139491A3 (de) | 2004-01-07 |
EP1139491B1 true EP1139491B1 (de) | 2005-09-28 |
Family
ID=7636693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01440058A Expired - Lifetime EP1139491B1 (de) | 2000-03-28 | 2001-03-08 | Abstrahlendes koaxiales Hochfrequenzkabel |
Country Status (9)
Country | Link |
---|---|
US (1) | US6426685B2 (de) |
EP (1) | EP1139491B1 (de) |
CN (1) | CN1229895C (de) |
AT (1) | ATE305662T1 (de) |
AU (1) | AU2649901A (de) |
BR (1) | BR0101159A (de) |
CA (1) | CA2342281A1 (de) |
DE (2) | DE10015379A1 (de) |
ES (1) | ES2248261T3 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1860725B1 (de) * | 2005-02-24 | 2012-08-15 | Obshchestvo s ogranichennoi otvetstvennostyu "VERITEL" | Strahlenemittierendes kabel und darin enthaltenes strahlenemittierendes element |
EP1739789B1 (de) * | 2005-06-30 | 2007-10-31 | Institut Scientifique de Service Public | Abstrahlendes Koaxialkabel |
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 (de) * | 2010-01-28 | 2018-11-28 | Alcatel Lucent | Abstrahlendes Kabel mit Montageschiene |
IT202000005983A1 (it) * | 2020-03-20 | 2021-09-20 | Prysmian Spa | Cavo coassiale radiante |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE300147C (de) | ||||
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 |
-
2000
- 2000-03-28 DE DE10015379A patent/DE10015379A1/de not_active Withdrawn
-
2001
- 2001-03-08 AT AT01440058T patent/ATE305662T1/de not_active IP Right Cessation
- 2001-03-08 ES ES01440058T patent/ES2248261T3/es not_active Expired - Lifetime
- 2001-03-08 DE DE50107535T patent/DE50107535D1/de not_active Expired - Lifetime
- 2001-03-08 EP EP01440058A patent/EP1139491B1/de not_active Expired - Lifetime
- 2001-03-13 AU AU26499/01A patent/AU2649901A/en not_active Abandoned
- 2001-03-26 US US09/816,382 patent/US6426685B2/en not_active Expired - Lifetime
- 2001-03-26 CA CA002342281A patent/CA2342281A1/en not_active Abandoned
- 2001-03-27 BR BR0101159-6A patent/BR0101159A/pt not_active Application Discontinuation
- 2001-03-28 CN CNB011117990A patent/CN1229895C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1319919A (zh) | 2001-10-31 |
AU2649901A (en) | 2001-10-04 |
EP1139491A3 (de) | 2004-01-07 |
DE10015379A1 (de) | 2001-10-04 |
ATE305662T1 (de) | 2005-10-15 |
DE50107535D1 (de) | 2005-11-03 |
ES2248261T3 (es) | 2006-03-16 |
US6426685B2 (en) | 2002-07-30 |
BR0101159A (pt) | 2001-10-30 |
US20010054945A1 (en) | 2001-12-27 |
EP1139491A2 (de) | 2001-10-04 |
CA2342281A1 (en) | 2001-09-28 |
CN1229895C (zh) | 2005-11-30 |
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