DK168779B1 - Apparatus for transmitting high frequency signals - Google Patents

Apparatus for transmitting high frequency signals Download PDF

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Publication number
DK168779B1
DK168779B1 DK255388A DK255388A DK168779B1 DK 168779 B1 DK168779 B1 DK 168779B1 DK 255388 A DK255388 A DK 255388A DK 255388 A DK255388 A DK 255388A DK 168779 B1 DK168779 B1 DK 168779B1
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Denmark
Prior art keywords
high frequency
openings
group
conduit
slots
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DK255388A
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Danish (da)
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DK255388D0 (en
DK255388A (en
Inventor
Helmut Haag
Karl Schulze-Buxloh
Guenter Thoennessen
Peter Zamzow
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Rheydt Kabelwerk Ag
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Publication of DK255388D0 publication Critical patent/DK255388D0/en
Publication of DK255388A publication Critical patent/DK255388A/en
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    • 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

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  • Waveguide Aerials (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Details Of Aerials (AREA)
  • Transplanting Machines (AREA)
  • Burglar Alarm Systems (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Surgical Instruments (AREA)
  • Waveguides (AREA)

Abstract

In an arrangement for the transmission of radio frequency signals between a radio frequency line emitting waves and a mobile antenna, the radio frequency line having an inner conductor (1), a coaxial outer conductor (2) and a dielectric (3), and openings being provided in the outer conductor of the radio frequency line for the emission or reception of waves, it is provided that different types of groups of openings (4, 5) are located in the longitudinal direction of the radio frequency line, on different sleeve lines, and that the individual opening in the longitudinal direction of the radio frequency line in the case of one group of openings is at least twice as long as in the case of another group. <IMAGE>

Description

i DK 168779 B1in DK 168779 B1

APPARAT TIL OVERFØRING AF HØJFREKVENSSIGNALERDEVICE FOR TRANSMISSION OF HIGH FREQUENCY SIGNALS

Opfindelsen vedrører en anordning til overføring af højfrekvenssignaler ifølge indledningen til krav 1.The invention relates to a device for transmitting high frequency signals according to the preamble of claim 1.

55

Til overføring af højfrekvente signaler i områder med u-gunstige udbredelsesbetingelser anvendes udstrålende kabler. Fra disse kabler udstråles bølger, for eksempel derved at en koaksialledning forsynes med åbninger. Et sådant ud-10 strålende koaksialt højfrekvenskabel kendes fra tysk fremlæggelsesskrift 28 12 523. Til opnåelse af et ensartet forløb af strålingsintensiteten i akseretningen, findes der i yderlederen et antal huller. Disse huller danner et mønster, som gentager sig periodisk (lækkabel).Radiation cables are used to transmit high frequency signals in areas with unfavorable propagation conditions. Waves are emitted from these cables, for example by providing a coaxial line with openings. Such a high-frequency radiating coaxial cable is known from German presentation specification 28 12 523. In order to obtain a uniform course of the radiation intensity in the axis direction, a number of holes exist in the outer conductor. These holes form a pattern that recurs periodically (leakage cable).

1515

Et lignende kabel fremgår af US-patentskrift nr. 3.795.915. Ved anbringelse af mange slidser med forskellig længde og med forskellig hældning i forhold til kabelaksen, hvis anbringelse gentager sig periodisk, kan et sådant kabel an-20 vendes ved et stort frekvensområde.A similar cable is disclosed in U.S. Patent No. 3,795,915. In the application of many slots of different lengths and with different inclination with respect to the cable axis, the arrangement of which repeats intermittently, such cable can be used at a large frequency range.

Ved de hidtil kendte lækkabler udstråles igennem åbningerne i første række lækbølger over en vis for konstruktionen typisk grænsefrekvens. Under kablets grænsefrekvens frem-25 kaldes på grund af de forholdsvis små åbninger kun en svag overfladebølge.In the case of the known leakage cables, through the openings in the first row leakage waves are radiated above a certain typical frequency frequency for the construction. Below the cable's cutoff frequency, due to the relatively small openings, only a slight surface wave is produced.

Der kendes også høj frekvensledninger med en gennemgående længdeslids (slidskabel). Gennem længdeslidsen fremkaldes 30 overfladebølger. Der eksisterer ikke en konstruktionstypisk grænsefrekvens, men på grund af den stærke stigning af kabeldæmpningen ved stigning af frekvensen, indskrænkes anvendelsesområdet for disse slidskabler til frekvensområdet under 200-300-Mhz. Hertil kommer, at kabeldæmpningen og 35 slidskablets udstrålingsegenskaber påvirkes af indflydelse fra omgivelserne, for eksempel aflejringer på kabelkappen.High frequency wires are also known with a continuous length slot (wear cable). Through the longitudinal slit 30 surface waves are produced. There is no design typical boundary frequency, but due to the strong increase in the cable attenuation of the frequency, the scope of these wear cables is limited to the frequency range below 200-300 Mhz. In addition, the attenuation of the cable and the radiation characteristics of the wear cable are influenced by the influence of the surroundings, for example deposits on the cable sheath.

2 DK 168779 B12 DK 168779 B1

Til grund for opfindelsen ligger den opgave at angive et udstrålende kabel med forbedrede udstrålingsegenskaber. En sådan højfrekvensledning skal i vidt omfang være uafhængig 5 af indflydelse fra omgivelserne i sine udstrålingsegenskaber og udstråle et bredt frekvensbånd.The object of the invention is to provide a radiating cable with improved radiating properties. Such a high-frequency conduction must be largely independent of the influence of the surroundings in its radiation characteristics and radiate a wide frequency band.

Denne opgave løses ved en anordning af den i indledningen nævnte slags ifølge opfindelsen ved de i krav 1 angivne 10 kendetegn. Opfindelsen udgør en kombination af konstruktionskendetegnene ved begge principper, så at slidskablets gode egenskaber er bærende i det lavere frekvensområde, og i det højere frekvensområde er fordelene ved lækkablet de bærende. Kombinationen af de to principper gør det muligt 15 at udforme længdeslidsen smallere i forhold til det rene slidskabel (30° åbningsvinkel i forhold til 80°).This task is solved by a device of the kind mentioned in the introduction according to the invention by the features of claim 1. The invention constitutes a combination of the design characteristics of both principles, so that the good characteristics of the wear cable are load bearing in the lower frequency range and in the higher frequency range the advantages of the leakage cable are the load bearing. The combination of the two principles makes it possible to design the longitudinal slit narrower relative to the clean wear cable (30 ° opening angle compared to 80 °).

Videreudformninger af opfindelsen er kendetegnet i underkravene. Et udførelseseksempel på opfindelsen forklares 20 nærmere ved hjælp af tegningen, derved viser figuren et højfrekvenskabel, som består af højfrekvensledningen 6 og kappen 7. Højfrekvensledningen er opbygget af en indvendig leder 1, en udvendig leder 2 og et dielektrikum 3. Den udvendige leder er forsynet med åbninger. Disse har på den 25 ene side form af periodiske konfigurationer af huller 4, hvis diameter er mindre end højfrekvensledningens diameter, og på den anden side har de form af slidser 5, som har en længde, der er større end højfrekvensledningens 6 diameter. Længdeslidserne har en bredde, som ved et snit vinkelret på 30 aksen svarer til en åbningsvinkel på for eksempel 30°. Huller og slidser er for eksempel anbragt løbende skrueformede omkring aksen med stor stigning, så at der i en afstand på få meter befinder sig henholdsvis huller og slidser på den mod kørebanen vendende side af højfrekvensledningen.Further embodiments of the invention are characterized in the subclaims. An embodiment of the invention is explained in greater detail by means of the drawing, in which the figure shows a high frequency cable consisting of the high frequency conduit 6 and the sheath 7. The high frequency conduit is made up of an internal conductor 1, an external conductor 2 and a dielectric 3. The external conductor is provided. with openings. These, on the one hand, take the form of periodic configurations of holes 4, the diameter of which is less than the diameter of the high-frequency conduit, and, on the other hand, they take the form of slots 5, which have a length greater than the diameter of the high-frequency conduit 6. The longitudinal slots have a width which at a section perpendicular to the 30 axis corresponds to an opening angle of, for example, 30 °. For example, holes and slots are arranged helically around the axis of high pitch so that at a distance of a few meters, holes and slots are respectively located on the side of the highway line facing the roadway.

Omkring højfrekvensledningen er der ekstruderet en beskyt- 35 DK 168779 B1 3 telseskappe 7, som består af et materiale med lavest mulige dielektriske tab. Et sådant materiale er for eksempel polyætylen.A protective sheath 7 is extruded around the high frequency conduit 7, which consists of a material with the lowest possible dielectric loss. One such material is, for example, polyethylene.

5 En yderligere foretrukken udførelsesform af opfindelsen består deri at udforme slidserne meget lange i forhold til høj frekvens ledningens diameter og for eksempel med store afstande kun anbringe korte ledende forbindelser mellem slidserne. I grænsetilfældet med forsvindende smalle for-10 bindeiser henholdsvis med lange slidser findes kun en enkelt slids. Dette kan være påkrævet af fremstillingsteknologiske grunde. I en yderligere udførelsesform er længdeslidsen ligeledes udformet skrueformet, så at den udvendige leder bedre omgriber dielektrikumet. Derudover op-15 nås ved den skrueformede anbringelse, at slidsen den ene gang stråler ud til den fra kørebanen bortvendende side og den anden gang til den mod kørebanen vendende side.A further preferred embodiment of the invention therein consists of forming the slots very long in relation to the high frequency conduit diameter and, for example, at long distances, only placing short conductive connections between the slots. In the borderline case with vanishingly narrow pre-links or long slits respectively, only a single slit is found. This may be required for manufacturing technology reasons. In a further embodiment, the longitudinal slot is also helically shaped so that the outer conductor better engages the dielectric. In addition, by the helical arrangement, the slot radiates once to the side facing away from the roadway and the second time to the side facing the roadway.

Det udstrålende kabel ifølge opfindelsen er i stand til at 20 frembringe god og ensartet udstråling i et bredt frekvensområde, for eksempel i de meget benyttede bånd (4m-, 2m-, 0,7m-bånd) ved formindsket følsomhed overfor omgivelserne. Opfindelsen anvendes hovedsageligt til informationsoverføring i tunneler såvel som til overføring af signaler ved 25 trafikledelse ved baner, i fremtiden også på veje og motorveje.The radiating cable of the invention is capable of producing good and uniform radiation in a wide frequency range, for example, in the widely used bands (4m, 2m, 0.7m bands) at reduced sensitivity to the environment. The invention is mainly used for information transmission in tunnels as well as for the transmission of signals by traffic management at lanes, in future also on roads and highways.

Ved dataudveksling kan et sådant kabel også anvendes som modtagerantenne. Som det vides fra antenneteknikken, er det 30 gunstigt at udlægge højfrekvensledningen i en afstand fra ledende flader. Som ledende flader kommer skinner, autoværn og lignende i betragtning, hvilke virker som reflektor eller direktor i forhold til modtage- eller senderantennen.For data exchange, such a cable can also be used as a receiving antenna. As is known from the antenna technique, it is advantageous to lay the high frequency line at a distance from conductive surfaces. As conductive surfaces, rails, guardrails and the like are considered, which act as reflector or director in relation to the receiving or transmitting antenna.

35 Det i beskrivelsen som eksempel behandlede udstrålende kabel kan naturligvis også have mere end to grupper af i DK 168779 B1 4 længden forløbende åbninger. For eksempel ved tre grupper andrager vinkelafstanden mellem to grupper 120e.The radiating cable treated in the description as an example can of course also have more than two groups of longitudinal openings extending in DK 168779 B1 4. For example, for three groups, the angular distance between two groups is 120e.

Claims (8)

1. Anordning til overføring af højfrekvenssignaler mellem en højfrekvensledning, der udstråler bølger, og en mobil 5 antenne, hvorved højfrekvensledningen består af en indvendig leder (1), en koaksial udvendig leder (2) og et die-lektrikum (3), og hvorved der i høj frekvens ledningens udvendige leder findes huller til udstråling eller modtagelse af bølger, k_e_n_d_e_t_e_g_n_e_t ved, at der i høj-10 frekvensledningens længderetning på forskellige kappelinier befinder sig forskelligartede grupper af åbninger (4, 5), og at enkeltåbningen i højfrekvensledningens længderetning ved en gruppe af åbninger er længere end ved en anden gruppe med en faktor på mindst 2. 15An apparatus for transmitting high frequency signals between a high frequency radiation emitting wave and a mobile antenna, wherein the high frequency conduit consists of an inner conductor (1), a coaxial outer conductor (2) and a dielectric (3), and there are holes in the external conductor of the high frequency conduit for radiating or receiving waves; group of openings is longer than in another group with a factor of at least 2. 15 2. Anordning ifølge krav 1, k_e_n_d_e_t_e_g_n_e_t ved, at åbningerne i en gruppe er huller (4), og at åbningerne i en anden gruppe er slidser (5), som i det væsentlige strækker sig i højfrekvensledningens (6) længderetning. 20Device according to claim 1, characterized in that the openings in one group are holes (4) and that the openings in another group are slots (5) which extend substantially in the longitudinal direction of the high frequency conduit (6). 20 3. Anordning ifølge krav 2, k_e_n_d_e_t_e_g_n_e_t ved, at længden af slidserne (5) er større end højfrekvensledningens (6) diameter, og at slidsernes radiale åbningsvinkel andrager 10-40°. 25Device according to claim 2, characterized in that the length of the slots (5) is greater than the diameter of the high frequency conduit (6) and that the radial opening angle of the slots is 10-40 °. 25 4. Anordning ifølge et af kravene 1-3, k_e_n_d_e_t_e_g_- n_e__t ved, at gruppen af åbninger med mindre længdeudstrækning består af cirkelrunde huller, som er anbragt i det væsentlige parallelt med højfrekvensledningens (6) ak- 30 se.Device according to one of claims 1 to 3, characterized in that the group of smaller length openings consists of circular holes which are arranged substantially parallel to the axis of the high frequency conduit (6). 5. Anordning ifølge et af kravene 1-4, k_e_n_d_e_t_e_g_- n_e_t ved, at åbningerne i hver gruppe danner et mønster, der gentager sig. 35Device according to one of claims 1-4, characterized in that the openings in each group form a repeating pattern. 35 6. Anordning ifølge et af kravene 1-5, k_e_n_d_e_t_e_g__- DK 168779 B1 6 n_e_t ved, at højfrekvensledningen er omgivet af en kappe (7) af et materiale med lavest mulige dielektriske tab.Device according to one of claims 1-5, characterized in that the high frequency conduit is surrounded by a sheath (7) of a material with the lowest possible dielectric loss. 7. Anordning ifølge krav 3, k_e_n_d_e_t_e_g_n_e_t ved, 5 at højfrekvensledningen udviser en i hele længden forløbende slids.The device of claim 3, wherein the high frequency conduit exhibits a longitudinally extending slot. 8. Anordning ifølge et af kravene 1-7, k_e_n_d_e_t_e_g_- n_e_t ved, at hver gruppe åbninger (4, 5) skiftevis belt) finder sig på den bort fra kørebanen vendende side, og i et naboafsnit befinder sig på den mod kørebanen vendende side af højfrekvensledningen (6).Device according to any one of claims 1-7, characterized in that each group of openings (4, 5) alternately belt) is located on the side facing away from the roadway and in a neighboring section is on the side facing the roadway of the high frequency line (6).
DK255388A 1987-07-20 1988-05-10 Apparatus for transmitting high frequency signals DK168779B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873723951 DE3723951A1 (en) 1987-07-20 1987-07-20 ARRANGEMENT FOR TRANSMITTING HIGH-FREQUENCY SIGNALS
DE3723951 1987-07-20

Publications (3)

Publication Number Publication Date
DK255388D0 DK255388D0 (en) 1988-05-10
DK255388A DK255388A (en) 1989-01-21
DK168779B1 true DK168779B1 (en) 1994-06-06

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DK255388A DK168779B1 (en) 1987-07-20 1988-05-10 Apparatus for transmitting high frequency signals

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

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GB2235336B (en) * 1989-06-23 1994-05-11 Hunting Eng Ltd Communication via leaky cables
DE4106890A1 (en) * 1991-03-05 1992-09-10 Rheydt Kabelwerk Ag RADIANT HIGH FREQUENCY CABLE
ES2114626T3 (en) * 1994-03-18 1998-06-01 Schneider Europ Ag MAGNETIC RESONANCE VISUALIZATION SYSTEM TO LOCATE A MEDICAL INSTRUMENT.
USRE40587E1 (en) 1994-03-18 2008-11-25 Schneider (Europe) A.G. Antenna for magnetic resonance imaging and method of use
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
DE10015379A1 (en) * 2000-03-28 2001-10-04 Alcatel Sa Radiating coaxial radio frequency cable
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 (en) * 2013-07-25 2015-02-26 KATHREIN Sachsen GmbH ground antenna

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FR1552604A (en) * 1967-02-03 1969-01-03
US3648172A (en) * 1968-10-02 1972-03-07 Sumitomo Electric Industries Circular leaky waveguide train communication system
DE2230280A1 (en) * 1972-06-21 1974-01-17 Licentia Gmbh OPEN WAVE CONDUCTOR FOR BROADBAND RADIO SUPPLY
US3795915A (en) * 1972-10-20 1974-03-05 Sumitomo Electric Industries Leaky coaxial cable
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US4325039A (en) * 1979-10-31 1982-04-13 Bicc Limited Leaky coaxial cable wherein aperture spacings decrease along the length of the cable

Also Published As

Publication number Publication date
NO172778C (en) 1993-09-01
IE62259B1 (en) 1995-01-11
NO883211D0 (en) 1988-07-19
FI883186A (en) 1989-01-21
FI92891B (en) 1994-09-30
DK255388D0 (en) 1988-05-10
ATE84640T1 (en) 1993-01-15
EP0300147B1 (en) 1993-01-13
PT88031B (en) 1994-01-31
PT88031A (en) 1989-06-30
NO172778B (en) 1993-05-24
NO883211L (en) 1989-01-23
IN170111B (en) 1992-02-15
FI883186A0 (en) 1988-07-04
ES2038237T3 (en) 1993-07-16
DE3877445D1 (en) 1993-02-25
EP0300147A1 (en) 1989-01-25
DE3723951A1 (en) 1989-02-02
IE882202L (en) 1989-01-20
DK255388A (en) 1989-01-21
FI92891C (en) 1995-01-10

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