EP0224917A1 - Arrangement for the transmission of directional radio-signals in two or more frequency bands - Google Patents

Arrangement for the transmission of directional radio-signals in two or more frequency bands Download PDF

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Publication number
EP0224917A1
EP0224917A1 EP86116791A EP86116791A EP0224917A1 EP 0224917 A1 EP0224917 A1 EP 0224917A1 EP 86116791 A EP86116791 A EP 86116791A EP 86116791 A EP86116791 A EP 86116791A EP 0224917 A1 EP0224917 A1 EP 0224917A1
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EP
European Patent Office
Prior art keywords
waveguides
frequency bands
antenna
directional radio
polarization
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Granted
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EP86116791A
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German (de)
French (fr)
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EP0224917B1 (en
Inventor
Peter Dipl.-Ing. Döhr
Uwe Dipl.-Ing. Leupelt
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Siemens AG
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Siemens AG
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
    • H01P1/161—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion sustaining two independent orthogonal modes, e.g. orthomode transducer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H01P1/2131—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies with combining or separating polarisations

Definitions

  • the invention relates to an arrangement in waveguide technology for transmitting directional radio signals from two or more directional radio frequency bands.
  • Separate antennas are generally required for the operation of directional radio systems for each radio (RF) frequency range. Due to the development of so-called system switches, a combination of polarization and frequency switches, it is possible to connect two or more RF areas to one antenna, a so-called double-band antenna, and thus to double-use the mounting and mounting surfaces on the directional radio structures. Up to about 3GHz coaxial cables and above about 3GHz waveguides are used as antenna feeds for only one polarization. For the usual transmission of two mutually perpendicular polarizations, therefore, two antenna lines are required per mono-band antenna, four antenna lines per double-band antenna.
  • Waveguides are preferably used in the clear transmission range, i.e. for the transmission of the fundamental wave.
  • suitable transitions and filters to suppress undesired higher wave types so-called mode filters, have made it possible to use waveguides in the area of higher wave types in which they have particularly low attenuation.
  • the SIRAL has proven to be particularly advantageous for this application.
  • Waveguide (Siemens rectangular aluminum waveguide) has been proven, for example in a special print of the magazine "Feintechnik" 82nd year 1974, issue 7, pages 355 to 360 and in Siemens magazine 49 (1975) issue 3, pages 151 to 154 is described in more detail.
  • These waveguides can also be bent over the broad side in the transmission area of higher shaft types without restricting normal routing, twisted in the longitudinal direction and built up from part lengths that are dimensionally adapted by the customer.
  • the invention has for its object to reduce the number of four antenna feed lines (waveguide) usually required for a double band antenna.
  • a broadband polarization filter which can be connected to the antenna exciter of a double-band antenna or multi-band antenna for all frequency bands and which has two suitable types of waveguide for the same polarization of the directional radio frequency bands, each with a crossover every polarization is connected.
  • the waveguides consist of suitable types of SIRAL waveguides, which are operated in the clear and / or ambiguous transmission range and contain mode filters for the ambiguous transmission range, or of waveguides made of broadband, suitable waveguides with a rectangular or oval cross section for one linear polarization each.
  • the individual components advantageously consist of NC-milled materials and are included in the ventilation of the antenna system.
  • the figure shows an arrangement for the transmission of RF signals from two microwave systems on only one waveguide for each polarization in a block diagram.
  • the connection of the antenna exciter, for example a circular waveguide, of a double-band antenna is designated by 1.
  • 2 is a broadband crossover for the two frequency bands of the microwave systems. This is connected via two waveguides 3, each for the same polarization of both frequency bands, with a crossover 4, 5 for each polarization.
  • the crossover 4 is provided for the horizontal polarization of the two frequency bands with the frequencies f1 and f2, the crossover 5 for the vertical polarization of the corresponding frequency bands.
  • the two waveguides 3 consist, for example, of two SIRAL waveguides of a suitable type or cross section, which can be operated both in the unambiguous and in the ambiguous transmission range, ie with particularly low attenuation.
  • SIRAL waveguides are already being used with great success as low-loss antenna cables in the transmission area higher shaft types used. With the arrangement according to the invention described above, the amount of waveguide is reduced by half, which saves a significant amount of space, but at the same time also saves material as a further advantage.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)
  • Aerials With Secondary Devices (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

This arrangement is intended to reduce the number of aerial leads (waveguides) necessary for a dual-band or multi-band aerial. For this purpose the invention provides for a wideband polarisation separator (2) which can be switched in at the aerial exciter of a dual-band or multi-band aerial for all frequency bands, which is connected via two waveguides (3) of suitable type each for the same polarisation of the microwave frequency bands, each with a frequency separator (4, 5) for each polarisation. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Anordnung in Hohlleitertechnik zur Übertragung von Richtfunksignalen von zwei oder mehr Richtfunk-Frequenzbändern.The invention relates to an arrangement in waveguide technology for transmitting directional radio signals from two or more directional radio frequency bands.

Für den Betrieb von Richtfunk-Systemen werden im allgemeinen für jeden Radio (RF)-Frequenzbereich separate Antennen (Monobandantennen) benötigt. Durch die Entwicklung von sogenannten Systemweichen, eine Kombination von Polarisations- und Frequenzweichen, ist es möglich, vorzugsweise zwei oder mehrere RF-Bereiche an eine Antenne, eine sogenannte Doppelbandantenne anzuschalten und damit die Stell- und Montageflächen auf den Richtfunkbauwerken doppelt auszunützen. Als Antennenzuleitungen werden dabei bis etwa 3GHz Koaxialkabel und oberhalb von etwa 3GHz Hohlleiter für nur eine Polarisation eingesetzt. Für die übliche Übertragung von zwei senkrecht aufeinanderstehenden Polarisationen werden also pro Monobandantenne in der Regel zwei, pro Doppelbandantenne vier Antennenleitungen benötigt.Separate antennas (monoband antennas) are generally required for the operation of directional radio systems for each radio (RF) frequency range. Due to the development of so-called system switches, a combination of polarization and frequency switches, it is possible to connect two or more RF areas to one antenna, a so-called double-band antenna, and thus to double-use the mounting and mounting surfaces on the directional radio structures. Up to about 3GHz coaxial cables and above about 3GHz waveguides are used as antenna feeds for only one polarization. For the usual transmission of two mutually perpendicular polarizations, therefore, two antenna lines are required per mono-band antenna, four antenna lines per double-band antenna.

Hohlleiter werden vorzugsweise im eindeutigen Obertragungsbereich, also für die Übertragung der Grundwelle eingesetzt. Die Entwicklung geeigneter übergänge und Filter zur Unterdrückung unerwünschter höherer Wellentypen, sogenannte Modenfilter, haben es möglich gemacht, Hohlleiter im Bereich höherer Wellentypen zu verwenden, in dem diese besonders niedrige Dämpfung haben. Als besonders vorteilhaft für diesen Einsatzfall hat sich der SIRAL-Hohlleiter (Siemens-Rechteck-Aluminium-Hohlleiter) erwiesen, der beispielsweise in einem Sonderdruck der Zeitschrift "Feinwerktechnik" 82. Jahrgang 1974, Heft 7, Seiten 355 bis 360 und in der Siemens-Zeitschrift 49 (1975) Heft 3, Seiten 151 bis 154 näher beschrieben ist. Diese Hohlleiter lassen sich auch im übertragungsbereich höherer Wellentypen ohne Einschränkung der normalen Verlegung über die Breitseite biegen, in Längsrichtung verdrillen und aus bauseits maßlich angepaßten Teillängen aufbauen.Waveguides are preferably used in the clear transmission range, i.e. for the transmission of the fundamental wave. The development of suitable transitions and filters to suppress undesired higher wave types, so-called mode filters, have made it possible to use waveguides in the area of higher wave types in which they have particularly low attenuation. The SIRAL has proven to be particularly advantageous for this application. Waveguide (Siemens rectangular aluminum waveguide) has been proven, for example in a special print of the magazine "Feinwerktechnik" 82nd year 1974, issue 7, pages 355 to 360 and in Siemens magazine 49 (1975) issue 3, pages 151 to 154 is described in more detail. These waveguides can also be bent over the broad side in the transmission area of higher shaft types without restricting normal routing, twisted in the longitudinal direction and built up from part lengths that are dimensionally adapted by the customer.

Die beträchtliche Ausweitung der bestehenden Richtfunknetze, verbunden mit der Erweiterung um neue Frequenzbereiche und Verbindungen hat den Bedarf zusätzlicher Antennenstell- und Montageplätze zur Folge. Weiterer Platzbedarf ergibt sich für Raumdiversitiy-Antennen beim Breitband-Digital-Richtfunk. Für die bessere Ausnutzung der vorhandenen Antennenplätze ist daher die Aufschaltung mehrerer RF-Bereiche an eine Antenne unumgänglich. Diese erweiterte Beschaltung der Antenne erfordert dementsprechend mehr Antennenleitungen auf engerem Raum.The considerable expansion of the existing directional radio networks, combined with the expansion by new frequency ranges and connections, results in the need for additional antenna placement and assembly spaces. Additional space is required for room diversity antennas in broadband digital radio relay. It is therefore essential to connect several RF areas to one antenna in order to make better use of the available antenna slots. This extended wiring of the antenna accordingly requires more antenna lines in a smaller space.

Der Erfindung liegt die Aufgabe zugrunde, die Anzahl der für eine Doppelbandantenne in der Regel benötigten vier Antennenzuleitungen (Hohlleiter) zu reduzieren.The invention has for its object to reduce the number of four antenna feed lines (waveguide) usually required for a double band antenna.

Diese Aufgabe wird mit einer Anordnung der eingangs beschriebenen Art gemäß der Erfindung gelöst durch eine an den Antennenerreger einer Doppelbandantenne oder Mehrbandantenne anschaltbare breitbandige Polarisationsweiche für alle Frequenzbänder, die über zwei Hohlleitungen geeigneten Typs für jeweils die gleiche Polarisation der Richtfunk-Frequenzbänder mit je einer Frequenzweiche für jede Polarisation verbunden ist.This object is achieved with an arrangement of the type described at the outset according to the invention by means of a broadband polarization filter which can be connected to the antenna exciter of a double-band antenna or multi-band antenna for all frequency bands and which has two suitable types of waveguide for the same polarization of the directional radio frequency bands, each with a crossover every polarization is connected.

In vorteilhafter Ausgestaltung des Erfindungsgegenstandes ist vorgesehen, daß die Hohlleitungen aus SIRAL-Hohlleitern geeigneten Typs bestehen, die im eindeutigen und/oder mehrdeutigen Obertragungsbereich betrieben werden und Modenfilter für den mehrdeutigen Obertragungsbereich enthalten, oder aus Hohlleitungen aus breitbandigen, geeigneten Hohlleitern mit Rechteck- oder Ovalquerschnitt für je eine lineare Polarisation.In an advantageous embodiment of the subject matter of the invention it is provided that the waveguides consist of suitable types of SIRAL waveguides, which are operated in the clear and / or ambiguous transmission range and contain mode filters for the ambiguous transmission range, or of waveguides made of broadband, suitable waveguides with a rectangular or oval cross section for one linear polarization each.

Die einzelnen Bauteile bestehen dabei vorteilhafter Weise aus NC-gefrästen Werkstoffen und werden in die Belüftung der Antennenanlage mit einbezogen.The individual components advantageously consist of NC-milled materials and are included in the ventilation of the antenna system.

Nachstehend wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.The invention is explained in more detail below on the basis of an exemplary embodiment shown in the drawing.

Die Figur zeigt eine Anordnung zur Übertragung von HF-Signalen zweier Richtfunk-Systeme auf nur einem Hohlleiter für jede Polarisation in einem Blockschaltbild. Dabei ist mit 1 der Anschluß des Antennenerregers, z.B. ein Rundhohlleiter, einer Doppelbandantenne bezeichnet. 2 ist eine breitbandige Polarisationsweiche für die beiden Frequenzbänder der Richtfunk-Systeme. Diese ist über zwei Hohlleitungen 3 für jeweils die gleiche Polarisation beider Frequenzbänder mit jeweils einer Frequenzweiche 4, 5 für jede Polarisation verbunden. Im dargestellten Beispiel ist die Frequenzweiche 4 für die horizontale Polarisation der beiden Frequenzbänder mit den Frequenzen f1 und f2 vorgesehen, die Frequenzweiche 5 für die vertikale Polarisation der entsprechenden Frequenzbänder. Die beiden Hohlleitungen 3 bestehen beispielsweise aus zwei SIRAL-Hohlleitern geeigneten Typs bzw. Querschnitts, die sowohl im eindeutigen als auch im mehrdeutigen Übertragungsbereich, d.h. besonders dämpfungsarm betrieben werden kön- nen. SIRAL-Hohlleiter werden bereits mit gutem Erfolg als dämpfungsarme Antennenleitungen im übertragungsbereich höherer Wellentypen eingesetzt. Mit der vorstehend beschriebenen erfindungsgemäßen Anordnung wird der Hohlleiteraufwand um die Hälfte reduziert, wodurch ein wesentlicher Platzgewinn, zugleich aber auch als weiterer Vorteil eine Materialeinsparung erreicht werde.The figure shows an arrangement for the transmission of RF signals from two microwave systems on only one waveguide for each polarization in a block diagram. The connection of the antenna exciter, for example a circular waveguide, of a double-band antenna is designated by 1. 2 is a broadband crossover for the two frequency bands of the microwave systems. This is connected via two waveguides 3, each for the same polarization of both frequency bands, with a crossover 4, 5 for each polarization. In the example shown, the crossover 4 is provided for the horizontal polarization of the two frequency bands with the frequencies f1 and f2, the crossover 5 for the vertical polarization of the corresponding frequency bands. The two waveguides 3 consist, for example, of two SIRAL waveguides of a suitable type or cross section, which can be operated both in the unambiguous and in the ambiguous transmission range, ie with particularly low attenuation. SIRAL waveguides are already being used with great success as low-loss antenna cables in the transmission area higher shaft types used. With the arrangement according to the invention described above, the amount of waveguide is reduced by half, which saves a significant amount of space, but at the same time also saves material as a further advantage.

Claims (4)

1. Anordnung in Hohlleitertechnik zur Übertragung von Richtfunksignalen von zwei oder mehr Richtfunk-Frequenzbändern,
gekennzeichnet d u r 'c h eine an den Antennerreger einer Doppelbandantenne oder Mehrbandantenne anschaltbare breitbandige Polarisationsweiche für alle Frequenzbänder, die über zwei Hohlleitungen geeigneten Typs für jeweils die gleiche Polarisation der Richtfunk-Frequenzbänder mit je einer Frequenzweiche für jede Polarisation verbunden ist.1. arrangement in waveguide technology for the transmission of directional radio signals from two or more directional radio frequency bands,
characterized by a broadband polarization switch for all frequency bands which can be connected to the antenna exciter of a double-band antenna or multi-band antenna and which is connected via two waveguides of suitable type for the same polarization of the directional radio frequency bands, each with a crossover for each polarization. 2. Anordnung nach Anspruch 1,
dadurch gekennzeichnet , daß die Hohlleitungen aus SIRAL-Hohlleitern geeigneten Typs bestehen, die im eindeutigen und/oder mehrdeutigen Übertragungsbereich betrieben werden und Modenfilter für den mehrdeutigen übertragungsbereich enthalten.2. Arrangement according to claim 1,
characterized in that the waveguides consist of suitable types of SIRAL waveguides, which are operated in the clear and / or ambiguous transmission range and contain mode filters for the ambiguous transmission range. 3. Anordnung nach Anspruch 1,
dadurch gekennnzeichnet, daß die Hohlleitungen aus breitbandigen, geeigneten Hohlleitern mit Rechteck- oder Ovalquerschnitt für je eine lineare Polarisation bestehen.3. Arrangement according to claim 1,
characterized in that the waveguides consist of broadband, suitable waveguides with a rectangular or oval cross section, each for a linear polarization. 4. Anordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet , daß die einzelnen Bauteile aus NC-gefrästen Werkstoffen bestehen und in die Belüftung der Antennenanlage mit einbezogen werden.4. Arrangement according to one of claims 1 to 3, characterized in that the individual components consist of NC-milled materials and are included in the ventilation of the antenna system.
EP19860116791 1985-12-06 1986-12-03 Arrangement for the transmission of directional radio-signals in two or more frequency bands Expired - Lifetime EP0224917B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3543243 1985-12-06
DE3543243 1985-12-06

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EP0224917A1 true EP0224917A1 (en) 1987-06-10
EP0224917B1 EP0224917B1 (en) 1992-03-11

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AU (1) AU589236B2 (en)
DE (1) DE3684250D1 (en)
FI (1) FI82322C (en)
YU (1) YU201586A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2618261A1 (en) * 1987-07-16 1989-01-20 Portenseigne Microwave switch and applications
EP2688138A1 (en) * 2012-07-20 2014-01-22 Thales Antenna and multi-beam antenna system comprising compact sources and satellite telecommunication system comprising at least one such antenna
WO2015185150A1 (en) * 2014-06-06 2015-12-10 Telefonaktiebolaget L M Ericsson (Publ) A combined two dual carrier radio link

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1031383B (en) * 1956-04-19 1958-06-04 Philips Nv Device for ventilating a waveguide system
FR2182728A1 (en) * 1972-05-05 1973-12-14 Thomson Csf
DE2517383A1 (en) * 1975-04-19 1976-10-21 Licentia Gmbh SYSTEM SWITCH FOR DOUBLE FREQUENCY USE
US3999151A (en) * 1975-09-08 1976-12-21 Western Electric Company, Inc. Crossguide hybrid coupler and a commutating hybrid using same to form a channel branching network

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491810A (en) * 1983-01-28 1985-01-01 Andrew Corporation Multi-port, multi-frequency microwave combiner with overmoded square waveguide section
DE3406641A1 (en) * 1984-02-24 1985-08-29 ANT Nachrichtentechnik GmbH, 7150 Backnang TWO-BAND POLARIZING SWITCH

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1031383B (en) * 1956-04-19 1958-06-04 Philips Nv Device for ventilating a waveguide system
FR2182728A1 (en) * 1972-05-05 1973-12-14 Thomson Csf
DE2517383A1 (en) * 1975-04-19 1976-10-21 Licentia Gmbh SYSTEM SWITCH FOR DOUBLE FREQUENCY USE
US3999151A (en) * 1975-09-08 1976-12-21 Western Electric Company, Inc. Crossguide hybrid coupler and a commutating hybrid using same to form a channel branching network

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CONFERENCE PROCEEDINGS, 4TH EUROPEAN MICROWAVE CONFERENCE, Montreux, 10.-13. September 1974, Seiten 609-612, Microwave Exhibitions and Publ. LTD, Sevenoaks, Kent, GB; P. DOEHR et al.: "A ductible rectangular waveguide with very low reflection" *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2618261A1 (en) * 1987-07-16 1989-01-20 Portenseigne Microwave switch and applications
EP2688138A1 (en) * 2012-07-20 2014-01-22 Thales Antenna and multi-beam antenna system comprising compact sources and satellite telecommunication system comprising at least one such antenna
FR2993715A1 (en) * 2012-07-20 2014-01-24 Thales Sa COMPACT RADIOFREQUENCY SOURCE, ANTENNA AND MULTIFACEAL ANTENNA SYSTEM COMPRISING SUCH COMPACT SOURCES AND SATELLITE TELECOMMUNICATION SYSTEM COMPRISING AT LEAST ONE SUCH ANTENNA
US9306293B2 (en) 2012-07-20 2016-04-05 Thales Antenna and multi-beam antenna system comprising compact feeds and satellite telecommunication system comprising at least one such antenna
WO2015185150A1 (en) * 2014-06-06 2015-12-10 Telefonaktiebolaget L M Ericsson (Publ) A combined two dual carrier radio link

Also Published As

Publication number Publication date
FI864972A (en) 1987-06-07
DE3684250D1 (en) 1992-04-16
AU6614486A (en) 1987-06-11
FI82322C (en) 1991-02-11
YU201586A (en) 1988-12-31
AU589236B2 (en) 1989-10-05
FI82322B (en) 1990-10-31
FI864972A0 (en) 1986-12-05
EP0224917B1 (en) 1992-03-11

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