EP0098192B1 - Multiplexanordnung zum Zusammenfügen von zwei Frequenzbändern - Google Patents

Multiplexanordnung zum Zusammenfügen von zwei Frequenzbändern Download PDF

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Publication number
EP0098192B1
EP0098192B1 EP83401195A EP83401195A EP0098192B1 EP 0098192 B1 EP0098192 B1 EP 0098192B1 EP 83401195 A EP83401195 A EP 83401195A EP 83401195 A EP83401195 A EP 83401195A EP 0098192 B1 EP0098192 B1 EP 0098192B1
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EP
European Patent Office
Prior art keywords
band
guide
polarization
hole
coupling
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
Application number
EP83401195A
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English (en)
French (fr)
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EP0098192A1 (de
Inventor
Nhu Bui Hai
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 Thomson Faisceaux Hertziens SA
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Alcatel Thomson Faisceaux Hertziens SA
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Application filed by Alcatel Thomson Faisceaux Hertziens SA filed Critical Alcatel Thomson Faisceaux Hertziens SA
Priority to AT83401195T priority Critical patent/ATE32811T1/de
Publication of EP0098192A1 publication Critical patent/EP0098192A1/de
Application granted granted Critical
Publication of EP0098192B1 publication Critical patent/EP0098192B1/de
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—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
    • 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

Definitions

  • the present invention relates to a multiplexing device for multiplexing two frequency bands B1, B2, where the frequencies of B1 are lower than the frequencies of B2, comprising, from the antenna access intended to be coupled to an antenna, a first polarization duplexer with a common guide passing bands B1 and B2 and a second polarization duplexer relating to band B2.
  • the present invention relates, in particular, to a dual-band multiplexer constituted by the above-mentioned multiplexing device; it also relates to a multiplexer intended for the multiplexing of more than two frequency bands and which comprises a multiplexing device according to the invention.
  • Multiplexers making it possible to group several frequency bands on the same antenna for a long time to cover the needs of the terrestrial and space radio-relay system. These multiplexers are of the two-band, three-band and more types. The polarizations of the waves are either straight or circular.
  • duplexers have one thing in common: their mechanical complexity resulting in a high cost price.
  • the duplexers of the other bands are complicated; in fact, they require, for example, two directional couplers with total coupling, in series, relating respectively to the two polarizations of the wave to be transmitted in the band considered, or else they require, from four coupling holes distributed at 90 ° from each other around a common guide, a symmetrical structure formed by two pairs of guides, the guides of a pair arriving on two opposite holes and having to be joined together to form the access relating to one of the two polarizations.
  • These known duplexers are also expensive because they use expensive filters in the access guides of the different bands.
  • the object of the present invention is, in particular, to reduce the aforementioned drawbacks while providing the same technical performance.
  • a network for combining radio systems at 4, 6 and 11 kmc describes a network for combining radio systems in three frequency bands respectively: 3.7 to 4.2 GHz; 5.925 to 6.425 GHz; and 10.7 to 11.7 GHz, a common antenna making it possible to transmit and receive these three frequency bands, and to operate with two polarizations of these waves.
  • This network distributes the six signals (two polarizations in each of the three frequency bands) to different gates, using a series of directional couplers.
  • This first square section waveguide is then reduced to a second dominant mode square section guide to let pass the band from 5.925 to 6.425 GHz, two directional couplers making it possible to extract the two polarizations in this frequency band.
  • This second guide with square section is further reduced in size and a network makes it possible to extract the two polarizations in the frequency band 10.7 to 11.7 GHz.
  • the invention provides a multiplexing device for multiplexing two frequency bands B1, B2, where the frequencies of B1 are lower than the frequencies of B2, comprising, from the antenna access, intended to be coupled to an antenna, a first polarization duplexer with a common guide passing the bands B1 and B2 and a second polarization duplexer relating to the band B2, said common guide being pierced with lateral openings constituting coupling holes turned 90 ° around the common guide, two coupling guides turned 90 ° around the common guide, two rectangular guides respectively leading to these holes, at least one resonator tuned to a frequency of the band B2 being placed in each of the holes, characterized in that the first duplexer comprises: two successive sections of the common guide each pierced with a single coupling hole in which is placed at least one of said resonators; and, seen from the antenna access, a first and a second filter respectively placed between the first and the second encountered hole and between the second encountered hole and the second duplexer and constituting respectively two short-circuit
  • the example which will be described is a multiplexing device making it possible to pass the 4 GHz (3.7-4.2 GHz) and 6 GHz (5.925-6.425 GHz) bands, each of these two bands comprising two orthogonal or linear polarizations. , either cir eyepieces.
  • Figure 1 shows the multiplexing device seen from the side;
  • FIG. 2 also shows the multiplexing device seen from the side but turned 90 ° relative to.
  • Figure 1 shows the multiplexing device seen from the side;
  • FIG. 2 also shows the multiplexing device seen from the side but turned 90 ° relative to.
  • Figure 1 shows the multiplexing device seen from the side;
  • FIG. 2 also shows the multiplexing device seen from the side but turned 90 ° relative to.
  • FIGS. 1 and 2 show, in series from an access A intended to be coupled to an antenna, a first polarization duplexer, D1, relating to the 4 GHz band, a transition from round guide to round guide, Tr, and a second polarization duplexer, D2, relating to the 6 GHz band.
  • the duplexer, D1 of the 4 GHz band comprises a common guide, G1-G2, one of the accesses of which constitutes access A and the other access of which is joined to the larger of the two openings of the transition Tr.
  • the common guide G1-G2 is a circular guide with an internal diameter equal to 54 mm, and which therefore allows the passage of the bands 4 and 6 GHz.
  • an access guide g1 intended for one of the two orthogonal polarizations of the 4 GHz band which will be called the first polarization.
  • the guide g1 is integral, at one of its ends, with the common guide section G1 and at its second end which constitutes the access A1 of the first polarization.
  • the access guide g1 is a rectangular guide whose short sides are perpendicular to the plane of Figure 1; this guide includes a transition zone between the access A1 and a straight line XX shown in broken lines in FIG. 1; this transition zone allows to pass from an opening of 58 x 29 mm on the access A1 to an internal section of 58 x 14.5 mm between the line XX and the hole T1, in order to have a good adaptation between the standard guide (58 x 29 mm), to be connected to access A ,, and the common guide G1-G2. Also to improve the adaptation, the hole T1 is provided with an iris Ir 39 mm long by 4 mm high, of which an enlarged view is given in FIG. 3.
  • the iris Ir has its long sides parallel to the long sides of the access guide gl.
  • two linear resonators R1, R2 (see FIG. 3) whose resonant frequency is located in the 6 GHz band and whose role is, on the one hand, to prevent the energy of the 6 GHz band to pass in the access guide and, on the other hand, to let pass the energy of the band 4 GHz.
  • the resonators R1, R2 each consist of a metal strip one tenth of a millimeter thick and 1 mm wide, in the form of a square: they are arranged in the plane of the iris, and the largest side of the square, which measures 7 mm, is parallel to the long sides of the iris.
  • a quasi-optical filter q1-q2 is arranged in the common guide section G1, between the hole T1 and the common guide section G2.
  • This filter consists of two elements, q1 and q2, which, as shown in Figure 4, are each formed of a substrate S on which is placed a dipole d; the substrate S is made of polytetrafluoroethylene (also known under the trademark "teflon”) and the dipole d is made of copper and is deposited on the substrate S by a printed circuit technique.
  • the dipole is 36 mm long and 1 mm wide.
  • the elements q1 and q2 are arranged transversely in the guide section G1 and the dipole d is oriented, for each of the elements q1 and q2, so as to be parallel to the short sides of the access guide g1, that is to say say perpendicular to the plane of FIG. 1.
  • the dipoles d of the elements q1 and q2, -whose resonance frequency is included in the 4 GHz band behave like short circuits for the part of the wave of the band 4 GHz having the first polarization, that is to say for the wave relating to the access A1 and whose polarization is perpendicular to the plane of FIG. 1.
  • the assembly G1-g1 Seen from the antenna access A, the assembly G1-g1 which has just been described is followed by an identical assembly G2-g2, the common guide section of which, G2, is connected in the extension of the section G1 and of which the access guide g2, relating to the part of the wave of the 4 GHz band having the second polarization, is directed perpendicular to the plane of FIG. 1.
  • the elements q1, q2 and with the reference XX of the assembly G1- g1 correspond, in the set G2-g2 the elements q3, q4 which form a quasi-optical filter and the marks X'X 'which indicate where is located (between an access A2 of the set G2-g2 and the line X 'X') the transition zone of the guide g2 corresponding to that of the guide g1.
  • the set G2-g2 being orthogonal to the set G1-g1, the dipoles d (see figure 4) of the filter elements q3 and q4 are placed parallel to the plane of figure 1 and therefore parallel to the small sides of the access guide g1, they therefore behave like short-circuits for the part of the wave of the 4 GHz band having the second polarization and reflect it towards the hole T2 for coupling the guide g2 on the guide section G2.
  • the distance between the coupling holes T1 and T2 must be at least of the order of magnitude of the maximum wavelength in the 4 GHz band so as to avoid that, in this frequency band, two polarizations of the wave do not react one on the other.
  • the transition from round guide to round guide, Tr makes it possible to pass from the diameter 54 mm of the common guide G1-G2 which lets the bands 4 and 6 GHz pass, to the diameter 34 mm of the common guide G of the duplexer D2, which lets the band pass 6 GHz but not the 4 GHz band.
  • the D2 duplexer in the 6 GHz band includes. connected to its common guide G, two orthogonal guides respectively relating to the two polarizations of the wave in the 6 GHz band: a access guide g3, of internal section 34.85 x 15.8 mm, located perpendicular to the common guide G and to the plane of FIG. 1, and an access guide g4 located in the extension of the circular common guide G and making a transition between this circular guide and a rectangular opening of 34.85 x 15.8 mm.
  • the duplexer D2 also comprises, in the guide G, substantially between the guides g3 and g4, a short-circuit strip, L, parallel to the plane of FIG.
  • the ends of the guides g3 and g4 opposite the guide G constitute the access A3 and A4 of the duplexer D2 relating to the two linear polarizations of the wave in the 6 GHz band.
  • the described multiplexing device can easily be used as a model, with modifications within the reach of those skilled in the art, for multiplexing, for example, the bands 11 and 14 GHz or 18 and 28 GHz.
  • a duplexer of the type of the D1 duplexer can be mounted between the antenna and the D1 duplexer, i.e. with one end of its common guide coupled to the antenna and the other end connected to the access A of FIGS. 1 and 2 by a transition from round guide to round guide.
  • the common guides of the duplexers can be of square section, see rectangular.
  • the multiplexing device can, as mentioned above, operate in circular polarization; it suffices to add to it a polarizer connected between the antenna access A (FIGS. 1 and 2) and the antenna and operating in the 4 and 6 GHz bands.
  • the present invention is intended, in particular, for frequency reuse multiplexers, that is to say multiplexers such that the two orthogonal polarizations of the same wave are used as separate information carriers.
  • the invention can be used in the antennas of earth stations both for the frequency bands of space communications and for all the bands of terrestrial and tropospheric radio-relay systems.

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  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Waveguide Switches, Polarizers, And Phase Shifters (AREA)
  • Waveguide Aerials (AREA)
  • Transmitters (AREA)
  • Transceivers (AREA)
  • Filters And Equalizers (AREA)
  • Amplifiers (AREA)

Claims (3)

1. Multiplexieranordnung zum Multiplexieren zweier Frequenzbänder B1, B2, bei denen die Frequenzen von B1 niedriger als die Frequenzen von B2 liegen, mit, beginnend am Antennenanschluß (A), der an eine Antenne gekoppelt werden soll, einem ersten Polarisationsdiplexer (D1) mit gemeinsamem Wellenleiter (G1-G2) für den Durchlaß der Bänder B1 und B2, und einem zweiten Polarisationsdiplexer (D2) für das Band B2, wobei der gemeinsame Wellenleiter (G1-G2) seitlich mit Öffnungen ausgestattet ist, die um 90° gegeneinander um den gemeinsamen Wellenleiter versetzte Kopplungslöcher (T1, T2) darstellen, mit zwei an je einem der Löcher endenden Wellenleitern mit rechteckigem Querschnitt, und mit mindestens je einem auf die Frequenz des Bandes B2 abgestimmten, in jedem der Löcher untergebrachten Resonator (R1, R2), dadurch gekennzeichnet, daß der erste Diplexer (D1) zwei aufeinanderfolgende Abschnitte (G1, G2) des gemeinsamen Wellenleiters umfaßt, die je ein einziges Kopplungsloch (T1, T2) aufweisen, in welchem mindestens einer der Resonatoren (R1, R2) untergebracht ist, sowie, vom Antennenanschluß her gesehen, ein erstes bzw. ein zweites Filter (ql-q2, q3-q4) zwischen dem ersten (T1) und dem zweiten (T2) Loch bzw. zwischen dem zweiten Loch (T2) und dem zweiten Diplexer (D2), welche zwei Kurzschlüsse für die Wellen des Bandes B1 mit einer ersten bzw. zweiten Polarisation darstellen, wobei die Polarisationen orthogonal zueinander stehen.
2. Multiplexieranordnung nach Anspruch 1, dadurch gekennzeichnet, daß das erste und zweite Filter quasi-optische Filter sind, die mindestens einen Dipol (d) besitzen, dessen Resonanzfrequenz im Frequenzband B1 liegt.
3. Multiplexieranordnung nach Anspruch 1, dadurch gekennzeichnet, daß der. Resonator (R1, R2) ein linearer Resonator in Gestalt eines Winkels ist, wobei ein Winkelschenkel parallel zu den kleinen Seiten des Anschlußwellenleiters (g1, g2) mit rechteckigem Querschnitt liegt, der zu dem den betreffenden Resonator enthaltenden Loch führt, während der andere Schenkel senkrecht zu diesen kleinen Seiten steht und das Ende des Winkels, das zum zu den kleinen Seiten senkrecht stehenden Schenkel gehört, frei ist und das Ende des Winkels, das zum den kleinen Seiten parallel liegenden Schenkel gehört, an den gemeinsamen Wellenleiter (G1, G2) angeschlossen sind.
EP83401195A 1982-06-25 1983-06-10 Multiplexanordnung zum Zusammenfügen von zwei Frequenzbändern Expired EP0098192B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83401195T ATE32811T1 (de) 1982-06-25 1983-06-10 Multiplexanordnung zum zusammenfuegen von zwei frequenzbaendern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8211208 1982-06-25
FR8211208A FR2529392B1 (fr) 1982-06-25 1982-06-25 Dispositif de multiplexage pour grouper deux bandes de frequences et multiplexeur comportant un tel dispositif

Publications (2)

Publication Number Publication Date
EP0098192A1 EP0098192A1 (de) 1984-01-11
EP0098192B1 true EP0098192B1 (de) 1988-03-02

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EP83401195A Expired EP0098192B1 (de) 1982-06-25 1983-06-10 Multiplexanordnung zum Zusammenfügen von zwei Frequenzbändern

Country Status (7)

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US (1) US4546471A (de)
EP (1) EP0098192B1 (de)
JP (1) JPS598402A (de)
AT (1) ATE32811T1 (de)
CA (1) CA1203645A (de)
DE (1) DE3375865D1 (de)
FR (1) FR2529392B1 (de)

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Publication number Priority date Publication date Assignee Title
FR2593644B1 (fr) * 1986-01-28 1988-03-11 Alcatel Espace Dispositif duplexeur de polarisation et de frequences a trois acces.
GB2188493A (en) * 1986-03-27 1987-09-30 Era Patents Ltd Orthogonal mode transducer
CA1260609A (en) * 1986-09-12 1989-09-26 Her Majesty The Queen, In Right Of Canada, As Represented By The Minister Of National Defence Wide bandwidth multiband feed system with polarization diversity
US4760404A (en) * 1986-09-30 1988-07-26 The Boeing Company Device and method for separating short-wavelength and long-wavelength signals
US4737741A (en) * 1986-10-20 1988-04-12 Hughes Aircraft Company Orthogonal mode electromagnetic wave launcher
FR2615038A1 (fr) * 1987-05-05 1988-11-10 Vidal Paul Duplexeur a guide d'onde en particulier pour des antennes d'emission et/ou de reception d'ondes electromagnetiques
US4912436A (en) * 1987-06-15 1990-03-27 Gamma-F Corporation Four port dual polarization frequency diplexer
DE69115783T2 (de) * 1990-07-26 1996-07-25 Loral Space Systems Inc Zweibandantenne mit Mehrfachausnutzung der Frequenzbänder
JPH04236502A (ja) * 1991-01-18 1992-08-25 Nec Corp 多周波共用群分波器
US5283789A (en) * 1992-05-15 1994-02-01 Private Satellite Network, Inc. Communication system providing data and television signals to PC work stations
US5794221A (en) 1995-07-07 1998-08-11 Egendorf; Andrew Internet billing method
US5784033A (en) * 1996-06-07 1998-07-21 Hughes Electronics Corporation Plural frequency antenna feed
US6060961A (en) 1998-02-13 2000-05-09 Prodelin Corporation Co-polarized diplexer
EP2815454A2 (de) * 2012-02-17 2014-12-24 Pro Brand International (Europe) Limited Mehrbandige datensignalempfangs- und/oder -sendevorrichtung
CN105958205A (zh) * 2016-06-20 2016-09-21 中国电子科技集团公司第三十八研究所 一种多频段双极化大功率馈源

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US3731235A (en) * 1971-11-03 1973-05-01 Gte Sylvania Inc Dual polarized diplexer
GB1507147A (en) * 1974-09-25 1978-04-12 Marconi Co Ltd Multiplexing arrangements
US4117423A (en) * 1976-09-23 1978-09-26 Hughes Aircraft Company Dual mode multiphase power divider
FR2488055A1 (fr) * 1980-07-31 1982-02-05 Thomson Csf Transducteur d'antenne pour antenne d'emission-reception et source primaire d'antenne equipee d'un tel transducteur

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Also Published As

Publication number Publication date
FR2529392A1 (fr) 1983-12-30
EP0098192A1 (de) 1984-01-11
DE3375865D1 (en) 1988-04-07
CA1203645A (en) 1986-04-22
ATE32811T1 (de) 1988-03-15
JPS6362921B2 (de) 1988-12-05
FR2529392B1 (fr) 1985-06-28
US4546471A (en) 1985-10-08
JPS598402A (ja) 1984-01-17

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