EP0899750A2 - Koaxiales Hochfrequenz-Kabel - Google Patents
Koaxiales Hochfrequenz-Kabel Download PDFInfo
- Publication number
- EP0899750A2 EP0899750A2 EP98401975A EP98401975A EP0899750A2 EP 0899750 A2 EP0899750 A2 EP 0899750A2 EP 98401975 A EP98401975 A EP 98401975A EP 98401975 A EP98401975 A EP 98401975A EP 0899750 A2 EP0899750 A2 EP 0899750A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- spacer
- cable
- mineral material
- cable according
- inner 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- Withdrawn
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
- H01B11/1834—Construction of the insulation between the conductors
Definitions
- the invention relates to a coaxial radio frequency cable consisting of a Inner conductor, from a dielectric surrounding it, the mineral material as Spacer contains, and from a concentric overlying dielectric tubular outer conductor arranged to the inner conductor (EP 0 503 129 A1).
- Coaxial high-frequency cables - hereinafter referred to as "HF cables” for short for example as a connecting cable between a transmitter and an antenna for Transport of electromagnetic waves used. You can use it as a "radiating" RF cable can also be laid in tunnel sections, for example.
- HF cables Coaxial high-frequency cables
- the dielectric located between the inner conductor and the outer conductor as a spacer to ensure that the two conductors are coaxial or at a fixed distance are arranged concentrically to each other.
- the dielectric can consist of a full dielectric Insulating material exist, the space between the inner and outer conductors completely filled, in solid or foamed form.
- the RF cable is as long as functional, as inner and outer conductors concentric to each other undamaged lie. At very high temperatures and especially in the event of fire, this can happen Melt the insulating material of the dielectric. It quickly comes into contact between inner and outer conductor. The RF cable is then unusable immediately.
- the spacer is in the form of a profile spiral or individual shaped pieces made of glass or ceramic Material built up.
- the corresponding RF cable is Can also be used at higher temperatures. It is also functional in the event of a fire secured, at least for a certain period of time.
- the invention has for its object to the RF cable described above design that with improved electrical properties in conventional technology can be manufactured.
- thermoplastic insulating material a combination of thermoplastic insulating material and mineral material consists.
- the insulating material used for this HF cable is a two material containing different components.
- a mineral, for example Particles "filled" thermoplastic insulating material allows the use of conventional techniques in the manufacture of the RF cable, and that with any structure of the spacer. Usual manufacturing techniques can also be used if, for example both discs made of thermoplastic insulating material and discs made of mineral material or corresponding individual supports can be used.
- Thermoplastic insulating material is always used when transporting and laying the HF cable effective as a spacer.
- the dielectric properties of the 2-component material are improved compared to a purely mineral material, so that the Transmission properties of the RF cable can be improved.
- the mineral material ensures that interior and Do not touch the outer conductors, even if the thermoplastic material has melted is.
- the RF cable therefore remains functional for a sufficient period of time.
- the 2-component material used for the spacer secures for the HF cable So simple manufacture, good electrical properties and functional integrity at high Temperatures.
- Fig. 1 shows an RF cable according to the invention, partly in section.
- Fig. 2 shows a section through Fig. 1 along the line II - II.
- Fig. 3 to 7 compared to Fig. 1 modified versions of the RF cable.
- the RF cable shown in Figs. 1 and 2 has a full dielectric, the solid or can be foamed. It consists of an inner conductor 1, a dielectric 2 and a tubular outer conductor 3 arranged concentrically with the inner conductor 1 the outer conductor 3 can be a sheath 4 made, for example, of polyethylene to be appropriate.
- the jacket 4 can also be made of a flame-retardant, halogen-free material consist.
- Inner conductor 1 and outer conductor 3 are preferably made of copper. Of the Inner conductor 1 can be designed as a smooth or corrugated tube or solid. Of the Outer conductor 3 can be a smooth tube, but it can also be corrugated.
- the dielectric 2 fills the entire space between FIGS. 1 and 2 Inner conductor 1 and outer conductor 3. Overall, it serves as a spacer between the two conductors 1 and 3.
- the outer conductor 3 is therefore in contact with the dielectric 2.
- 2-component material made of thermoplastic insulating material and mineral material, the thermoplastic insulating material in the form of a large number of particles is admitted. The particles become the thermoplastic insulating material in one Prefabrication with evenly distributed distribution added. The resulting 2-component material can be connected to the inner conductor 1 during the manufacture of the HF cable be extruded.
- the RF cable can also be constructed with a cavity dielectric according to FIGS. 3 to 6 be.
- 3 are disks 5 as spacers for the two conductors 1 and 3 provided that abut against each other on both conductors 1 and 3.
- the Slices 5 can be extruded onto the inner conductor 1 in a manner similar to that described for FIG. 1 become. However, they can also be prefabricated and plugged onto the inner conductor 1.
- the coil 4 has a helix 6 as a spacer.
- the coil 6 is made prefabricated the 2-component material and wound onto the inner conductor 1.
- the mineral material can also be introduced into an HF cable in concentrated form whose other structure can remain unchanged. So with an RF cable 5 between two disks 7 of the spacer, which consist of thermoplastic material, additional discs 8 made of mineral Material can be attached. The distance between the disks 8 can be greater than that Distance of the discs 7 from each other, because the discs 8 only then Functional maintenance of the HF cable are required when the discs 7 do not function can do more. This can be done in the event of a fire or in some other way resulting high temperatures may be the case. The disks 8 therefore need Transport, during assembly and in the undisturbed operation of the HF cable not on the outer conductor 3, at least not with a supporting function. Rather, you can have one too have significantly smaller diameter than the discs 7. The are expedient Disks 8 made of low material.
- Disks made of mineral material can also be used with an HF cable, which has a helix 9 as a spacer, as shown for example in Fig. 6.
- the helix 9 has a continuous strand 10, which has a transverse corrugation provided inner conductor 1 is present.
- Supports 11 are at a distance from one another from the strand 10 from, at the free ends of which is also transversely corrugated outer conductor 3.
- the in Fig. 6 Disks of mineral material can be in the areas between the supports 11 are attached. They are with recesses to accommodate the Strands 10 of the coil 9 equipped.
- the mineral disks also need here initially have no supporting function.
- the RF cable can also be made with a full dielectric made of thermoplastic Be provided material that can be solid or foamed.
- disks 12 made of mineral material between inner conductor 1 and External conductor 3 arranged. The same applies to their construction as for the disks 8 according to FIG Fig. 5.
- thermoplastic insulating material on the one hand and mineral material, on the other hand, also applies if individual supports are used.
- thermoplastic insulating material can be made of, for example Polyethylene or polypropylene exist.
- a mineral material Ceramic or glass can be used.
- the outer conductor 3 is in each case after completion of the Dielectric applied to the same.
- the manufacture of the RF cable can be in total done in one operation.
- the jacket 4 may optionally be in the same Operation can be applied.
- the HF cable with the structure described is fully functional for normal use. At High temperatures, especially in the event of a fire, melt the thermoplastic material. The mineral particles it contains, however, do not melt. You stay as Spacers receive and prevent contact between inner conductor 1 and External conductor 3. The functionality of the HF cable therefore remains - albeit limited - receive.
Landscapes
- Waveguides (AREA)
- Communication Cables (AREA)
- Insulated Conductors (AREA)
Abstract
Description
Fig. 1 ein HF-Kabel nach der Erfindung teilweise im Schnitt.
Fig. 2 einen Schnitt durch Fig. 1 längs der Linie II - II.
Fig 3 bis 7 gegenüber Fig. 1 veränderte Ausführungen des HF-Kabels.
Claims (9)
- Koaxiales Hochfrequenz-Kabel, bestehend aus einem Innenleiter, aus einem denselben umgebenden Dielektrikum, das mineralisches Material als Abstandshalterung enthält, und aus einem über dem Dielektrikum liegenden, konzentrisch zum Innenleiter angeordneten, rohrförmigen Außenleiter, dadurch gekennzeichnet, daß die Abstandshalterung aus einer Kombination von thermoplastischem Isoliermaterial und mineralischem Material besteht.
- Kabel nach Anspruch 1, dadurch gekennzeichnet, daß die Abstandshalterung aus mit axialem Abstand zueinander angeordneten Scheiben (7, 8) aufgebaut ist, von denen ein Teil aus thermoplastischem Isoliermaterial und ein anderer Teil aus mineralischem Material besteht.
- Kabel nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Scheiben (7, 8) aus den unterschiedlichen Materialien mit unterschiedlichen Abständen zueinander angeordnet sind.
- Kabel nach Anspruch 1, dadurch gekennzeichnet, daß die Abstandshalterung aus einer aus thermoplastischen Isoliermaterial bestehenden Wendel (9) mit einem durchgehenden, am Innenleiter (1) anliegenden Strang (10) und mit Abstand zueinander abstehenden Stützen (11) sowie zwischen den Stützen (11) angeordneten Scheiben aus mineralischem Material aufgebaut ist.
- Kabel nach Anspruch 1, dadurch gekennzeichnet, daß die Abstandshalterung aus einem Volldielektrikum und Scheiben (12) aus mineralischem Material besteht, die mit axialem Abstand zueinander zwischen Innenleiter (1) und Außenleiter (3) angebracht sind.
- Kabel nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Scheiben aus mineralischem Material im ungestörten Betrieb den Außenleiter (3) nicht tragend berühren.
- Kabel nach Anspruch 1, dadurch gekennzeichnet, daß für die Abstandshalterung thermoplastisches Isoliermaterial eingesetzt ist, das eine Vielzahl von mineralischen Partikeln enthält.
- Kabel nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß als mineralisches Material Keramik eingesetzt ist.
- Kabel nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß als mineralisches Material Glas eingesetzt ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19737759 | 1997-08-29 | ||
| DE19737759A DE19737759A1 (de) | 1997-08-29 | 1997-08-29 | Koaxiales Hochfrequenz-Kabel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0899750A2 true EP0899750A2 (de) | 1999-03-03 |
| EP0899750A3 EP0899750A3 (de) | 2000-05-24 |
Family
ID=7840614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98401975A Withdrawn EP0899750A3 (de) | 1997-08-29 | 1998-08-03 | Koaxiales Hochfrequenz-Kabel |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6346671B1 (de) |
| EP (1) | EP0899750A3 (de) |
| KR (1) | KR19990023988A (de) |
| AU (1) | AU8083698A (de) |
| BR (1) | BR9803270A (de) |
| DE (1) | DE19737759A1 (de) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1650400A (en) * | 1998-12-22 | 2000-07-12 | Lk A/S | An electrical cable |
| KR100382884B1 (ko) * | 2000-03-16 | 2003-05-09 | (주)신아정보통신 | 중심유지기능을 가진 알에프 커넥터 |
| KR100439186B1 (ko) * | 2001-12-28 | 2004-07-05 | 한국전자통신연구원 | 자바 가상머신의 멀티 쓰레드 시스템에서의 동기화 장치및 방법 |
| US6815617B1 (en) * | 2002-01-15 | 2004-11-09 | Belden Technologies, Inc. | Serrated cable core |
| US7705238B2 (en) * | 2006-05-22 | 2010-04-27 | Andrew Llc | Coaxial RF device thermally conductive polymer insulator and method of manufacture |
| US7525041B2 (en) * | 2006-09-21 | 2009-04-28 | General Electric Company | Method and apparatus for resonance frequency response attenuation |
| US7642451B2 (en) * | 2008-01-23 | 2010-01-05 | Vivant Medical, Inc. | Thermally tuned coaxial cable for microwave antennas |
| US7674981B1 (en) * | 2008-09-25 | 2010-03-09 | Alcatel-Lucent Usa Inc. | Structured dielectric for coaxial cable |
| JP2015002100A (ja) * | 2013-06-17 | 2015-01-05 | 日立金属株式会社 | 同軸ケーブル |
| CA3020022C (en) | 2016-04-13 | 2024-09-24 | Acceleware Ltd. | APPARATUS AND METHODS FOR ELECTROMAGNETIC HEATING OF HYDROCARBON FORMATIONS |
| US11152138B2 (en) | 2017-09-08 | 2021-10-19 | Nokia Shanghai Bell Co., Ltd. | Fire rated radio frequency cable |
| CA3083827A1 (en) | 2017-12-21 | 2019-06-27 | Acceleware Ltd. | Apparatus and methods for enhancing a coaxial line |
| WO2020010439A1 (en) | 2018-07-09 | 2020-01-16 | Acceleware Ltd. | Apparatus and methods for connecting sections of a coaxial line |
| DE102019132190A1 (de) * | 2019-07-09 | 2021-01-14 | Westfalia Metal Hoses Gmbh | Leitungselement mit Luftspaltisolierung |
| US12283400B2 (en) * | 2019-07-18 | 2025-04-22 | Rfs Technologies, Inc. | Dielectric structure, a method of manufacturing thereof and a fire rated radio frequency cable having the dielectric structure |
| KR102832083B1 (ko) * | 2020-04-21 | 2025-07-10 | 도쿄토쿠슈덴센 가부시키가이샤 | 동축 플랫 케이블 |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE391412C (de) * | 1923-04-22 | 1924-03-06 | Sack Gmbh Maschf | Mechanische Streckbank |
| NL70908C (de) * | 1946-01-18 | |||
| US3005038A (en) * | 1958-12-31 | 1961-10-17 | Mc Graw Edison Co | High temperature radio frequency cable and method of making the same |
| DE1441117B2 (de) * | 1962-10-12 | 1972-03-23 | Spinner, Georg, Dipl.-Ing., 8000 München | Koaxialleitungsabschnitt mit isolierstuetze |
| DE1465637B2 (de) * | 1963-08-22 | 1971-09-30 | Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover | Abstandshalter fuer koaxiale hochfrequenzkabel |
| US3490496A (en) * | 1968-01-15 | 1970-01-20 | Vacuum Barrier Corp | Coaxial tubing having improved spacer means |
| GB1268280A (en) * | 1969-11-26 | 1972-03-29 | Phelps Dodge Copper Prod | Improvements in or relating to coaxial cable and manufacture thereof |
| JPS53141486A (en) * | 1977-05-17 | 1978-12-09 | Sumitomo Electric Ind Ltd | Manufacturing device of coaxial cable insulating body |
| FR2437686A1 (fr) * | 1978-09-29 | 1980-04-25 | Mayer Ferdy | Element electrique a pertes, tel que fil, cable et ecran, resistant et absorbant |
| US4259990A (en) * | 1979-06-20 | 1981-04-07 | Kabel-und Metallwerke, Gutehoffnungshutte A.G. | Spacer in concentric tube systems |
| FR2461342A1 (fr) * | 1979-07-06 | 1981-01-30 | Mayer Ferdy | Cables a haute immunite, contre pulse electromagnetique (emp) |
| JPS5622009A (en) * | 1979-07-30 | 1981-03-02 | Fujikura Ltd | Method of manufacturing foamed plastic coaxial cable |
| US4510468A (en) * | 1982-09-30 | 1985-04-09 | Ferdy Mayer | RF Absorptive line with controlled low pass cut-off frequency |
| DE3401137A1 (de) * | 1984-01-14 | 1985-07-18 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Hochfrequenzkabel |
| FR2604286B1 (fr) * | 1986-09-18 | 1988-11-10 | Mayer Ferdy | Structures a propagation d'onde pour la suppression de surtensions et l'absorption de transitoires |
| JPS6460909A (en) * | 1987-09-01 | 1989-03-08 | Murata Manufacturing Co | Shielded conductor |
| DE3911041A1 (de) * | 1989-04-05 | 1990-10-11 | Gore W L & Ass Gmbh | Isolationsmaterial fuer hochfrequenzleitungen |
| DE4037972A1 (de) * | 1989-12-20 | 1991-06-27 | Asea Brown Boveri | Bauteil hoher elektrischer feldbelastbarkeit und langzeitstabilitaet fuer verwendung als isolierkoerper |
| DE4107651A1 (de) * | 1991-03-09 | 1992-09-10 | Kabelmetal Electro Gmbh | Koaxiales hochfrequenzkabel mit keramischen abstandshaltern |
| EP0503129A1 (de) * | 1991-03-09 | 1992-09-16 | kabelmetal electro GmbH | Koaxiales elektrisches Hochfrequenzkabel |
| US6335490B1 (en) * | 1995-06-07 | 2002-01-01 | Mitsubishi Cable Industries, Ltd. | Insulating material for coaxial cable, coaxial cable and method for producing coaxial cable |
| US5742002A (en) * | 1995-07-20 | 1998-04-21 | Andrew Corporation | Air-dielectric coaxial cable with hollow spacer element |
| DE19545582C2 (de) * | 1995-12-07 | 2003-03-20 | Alcatel Kabel Ag | Halogenfreies Isoliermaterial |
| DE19602754A1 (de) * | 1996-01-26 | 1997-07-31 | Alcatel Kabel Ag | Abstandshalterung für ein koaxiales Hochfrequenz-Kabel |
-
1997
- 1997-08-29 DE DE19737759A patent/DE19737759A1/de not_active Withdrawn
-
1998
- 1998-08-03 EP EP98401975A patent/EP0899750A3/de not_active Withdrawn
- 1998-08-11 US US09/132,184 patent/US6346671B1/en not_active Expired - Fee Related
- 1998-08-20 AU AU80836/98A patent/AU8083698A/en not_active Abandoned
- 1998-08-28 BR BR9803270-4A patent/BR9803270A/pt not_active IP Right Cessation
- 1998-08-28 KR KR1019980035172A patent/KR19990023988A/ko not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP0899750A3 (de) | 2000-05-24 |
| BR9803270A (pt) | 1999-10-19 |
| KR19990023988A (ko) | 1999-03-25 |
| AU8083698A (en) | 1999-03-11 |
| DE19737759A1 (de) | 1999-03-04 |
| US6346671B1 (en) | 2002-02-12 |
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