EP1184932A1 - Dispositif pour la transmission de signaux électromagnétiques au travers d'une structure comportant des modules organisés pour l'obtention d'une redondance en deux pour un - Google Patents
Dispositif pour la transmission de signaux électromagnétiques au travers d'une structure comportant des modules organisés pour l'obtention d'une redondance en deux pour un Download PDFInfo
- Publication number
- EP1184932A1 EP1184932A1 EP01401723A EP01401723A EP1184932A1 EP 1184932 A1 EP1184932 A1 EP 1184932A1 EP 01401723 A EP01401723 A EP 01401723A EP 01401723 A EP01401723 A EP 01401723A EP 1184932 A1 EP1184932 A1 EP 1184932A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- waveguide
- signals
- modules
- guide
- redundancy
- 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.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
Definitions
- the invention relates to a device for enabling the transmission of electromagnetic signals, through a structure comprising modules functionally organized so that two-for-one redundancy is obtained.
- This device is intended to be integrated into the equipment of a system where signals are transmitted via electromagnetic waveguides and for example in communication equipment intended to be on board satellites.
- electromagnetic waveguides it is necessary here hear both the actual waveguides and the physical connections functionally equivalent propagatives and for example microstrip lines.
- the equipment which is intended to equip such satellites have modules which are duplicated so that it can be remedied to a fault affecting the operation of a functional module by putting into operation of an identical or similar module which duplicates it.
- Such redundancy is conventionally applied to various modules included in an equipment and for example to amplifier modules allow to act on the signals which are transmitted by through the waveguides.
- FIG. 1 shows a schematic example of a known device composed identical functional modules to obtain redundancy in two for a.
- This device is intended for equipment in which signals are transmitted through electromagnetic waveguides.
- the device presented comprises two identical modules, referenced 1 and 1 ', which are, for example, each consisting of an amplifier and which are mounted in the device to be able to receive a signal, for example a microwave signal.
- This signal is provided to them at an input of the device which is referenced IN and which is supposed to serve the two modules in the equipment, not shown here, which features them.
- Each of the two modules 1 and 1 ' is arranged to be able to provide a signal identical to the level of an output referenced OUT of the device, in the equipment, to from the signal it received at the IN input.
- a switch 2 is inserted between the IN input and a clean I1 or I1 'input to each of the modules.
- This switch is conventionally a switch unipolar, commonly known by the acronym SPDT (single pole double throw), it allows the IN input to be connected to one or other of the inputs I1 and I1 ', depending on the selective positioning imposed on it.
- the modules 1 and 1 'each have a signal output O1 or O1 'which connects to the output OUT of the device by through a coupler, this coupler is for example a unipolar switch 3, mounted in reverse with respect to the switch 2, so as to allow establishing a connection to the OUT output with one or other of the two O1 outputs, O1 ', according to the selective positioning imposed on it.
- Figure 2 shows a known variant of the device shown in Figure 1.
- This variant of the device differs from the previous one in that it includes a Wilkinson assembly substituting a combiner 4 for the unipolar switch previously provided between the outputs of the duplicated modules 1, 1 'and the OUT output of the device.
- this combiner 4 includes a resistor 5 inserted between the respective outputs O1 and O1 'of modules 1 and 1'.
- the devices presented allow transmission of electromagnetic signals through a structure, comprising modules functional organized so that two-for-one redundancy is obtained, the signals provided therein transmitted via waveguides electromagnetic.
- These devices have the disadvantage of being bulky, in especially when the wavelengths of the signals are relatively large in the target wavelength range.
- the presence of two switches or a switch and a combiner, in addition to the modules makes it more complex incorporating these modules into the same structure. It also complicates test operations of the devices thus produced.
- This is a disadvantage important, in particular, in the case of devices intended for equipment on board satellites, where space is measured and where the simplicity of the solutions provided, so that maximum reliability is obtained.
- the invention therefore provides a device intended to allow the transmission of signals electromagnetic, through a structure comprising functional modules organized so that two-for-one type redundancy is obtained, in the case of signals which are transmitted through waveguides electromagnetic ..
- this device comprises a guide of waves at one end forming an input from which the signals intended to be received are received applied to either of two functional modules that are organized for allow obtaining redundancy in two for one, the other end of this waveguide being short-circuited.
- the waveguide is further equipped with two electric field sampling devices which are each provided to supply one of the modules and which are respectively arranged at distances from the end in short circuits that are equal to a quarter or an odd multiple of a quarter of the length waveform of received signals.
- Each of the two modules is also connected by a output to a coupler, of the single-pole switch or combiner type, responsible for transmit, downstream of the device, the signals coming from one and / or the other of the two modules.
- the two organs of sample are divers with conductive rods penetrating inside the waveguide by holes made in the wall of this guide. These rods are coplanar and respectively located at distances from the shorted end of the waveguide which corresponds to a quarter of the wavelength ⁇ of the signals electromagnetic, which the waveguide transmits, and to an odd multiple of that quarter wavelength.
- the distance between the sampling along the waveguide is equal to half the wavelength electromagnetic signals transmitted by the guide.
- a selective filter is inserted in the guide waves which it divides into two cavities, in the part of this guide which is closed by a short-circuit element, and this filter is likely to be of fin line type.
- the modules that the device comprises are produced on the same substrate, where they are connected by microstrip connections to the stems of the divers of the sampling organs of the device.
- Figures 1 and 2 correspond to representations of two devices known in which functional modules of an equipment structure allow for two-for-one redundancy.
- FIG. 3 shows an example of a device according to the invention.
- the device according to the invention is intended to allow the transmission of electromagnetic signals transmitted to it at an input end IN of a waveguide 6, represented in section in FIG. 3, towards one or the other of two functional modules 1 and 1.
- These modules are for example amplifiers, as already assumed previously.
- the end of the waveguide 6, which is the opposite of its input IN, is assumed to short-circuit in a known manner in itself via an element 7 which seals this end.
- two electric field sampling members 8 and 8 ′ are provided for ability to transmit signals to each of modules 1 and 1 'separately electromagnetic which are transmitted to the waveguide 6, via its IN input.
- These sampling devices are provided to avoid the use of a unipolar switch upstream of modules 1 and 1 'to receive the electromagnetic signals which appear at the IN input.
- the rod of a first of the sampling organs that is to say that of the organ 8 ′, is positioned, via the pearl which carries it, at a distance determined from the internal surface S of the short-circuit element 7 which closes the waveguide.
- This determined distance is preferably chosen equal to the quarter of the wavelength ⁇ of the electromagnetic signals that the waveguide must transmit to the module considered, ie in this case to module 1 '. It is possibly provided that it can be made adjustable according to the application to equip. This adjustment is for example obtained by action on a capacity variable provided at the level of a filter introduces the waveguide in the vicinity of the end of this guide which is short-circuited.
- Said determined distance can also be chosen from among the multiples odd by ⁇ / 4, however the smallest distance is preferably chosen for reasons of compactness of the device.
- the rod of the second of the sampling organs that is to say that of the organ 8 is here assumed to be positioned in the same plane as the stem of the sampling 8 'and at a distance from the surface S which corresponds to an odd multiple of ⁇ / 4, this multiple also being chosen as small as possible and therefore equal to 3 for the reason for compactness already indicated above.
- the distance between the organs of sampling along the waveguide is then equal to half the length wave of electromagnetic signals transmitted by the guide.
- the two sampling organs are able to capture the electric field present in the waveguide at a level where this field is maximum.
- Two microwave interfaces 10, 10 ′ which are for example of the MIC type (microwave integrated circuit) are each inserted between one of the sampling organs 8 and 8 'and one of the modules 1 or 1' that this organ supplies in signals.
- the interfaces here are assumed to be MIC interfaces (microwave integrated circuit) and the modules are for example low noise amplifiers commonly known by the acronym LNA (low noise amplifier).
- LNA low noise amplifier
- These amplifiers here are connected by microstrip links 14, 14 'to the rods of the plungers of the sampling organs.
- the assembly is preferably carried out on the same substrate 13 which allows simultaneous mounting of the amplifiers and which promotes their testing in parallel. A significant gain in terms of bulk of the device comprising a such set is obtained.
- one of amplifiers 1 or 1 ' is activated, then that the other is kept off.
- the presence of the amplifier off should not not disturb the field in the waveguide 6 and this can be ensured by inserting a simple switch between at least one of the glass beads and one of the two amplifiers 1, 1 ', for example at the corresponding interface 10 or 10'. It is also possible to quantify and correct the mutual influence of the two amplifiers 1 and 1 ', so that the signals arriving at the input IN of the waveguide arrive in full at that of the amplifiers which is then active. So he is possible to operate with minimum losses.
- Each of the amplifiers has an independent output, referenced O1 for amplifier 1 and O1 'for amplifier 1'.
- the output signals respectively produced by one or the other of these amplifiers are for example applied to a recombination element 12, for example a switch unipolar two channels to one channel, corresponding functionally to switch 3 mentioned in connection with FIG. 1.
- This element of recombination not shown, can also be a functionally combinator corresponding to the combiner 4 mentioned in connection with FIG. 2.
- the filter 11 is for example a filter, of fin line type, the length of which electric is equivalent to (2N + 1) ⁇ / 4. It is produced on a flat substrate dividing into two cavities, the waveguide section where it extends longitudinally. Such a embodiment provides high overvoltage coefficients and in consequence of low losses.
Landscapes
- Microwave Amplifiers (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Amplifiers (AREA)
- Coils Or Transformers For Communication (AREA)
- Transmitters (AREA)
- Burglar Alarm Systems (AREA)
Abstract
Description
Claims (6)
- Dispositif destiné à permettre la transmission de signaux électromagnétiques, au travers d'une structure comportant des modules fonctionnels organisés pour que soit obtenue une redondance de type deux pour un, dans le cas de signaux qui sont transmis par l'intermédiaire de guides d'ondes électromagnétiques, caractérisé en ce qu'il comporte un guide d'ondes (6) à une extrémité formant entrée (IN) duquel sont reçus les signaux destinés à être appliqués à l'un ou l'autre de deux modules fonctionnels (1, 1') organisés pour permettre l'obtention d'une redondance en deux pour un, ce guide d'ondes dont l'autre extrémité est en court-circuit étant équipé de deux organes (8, 8') de prélèvement de champ électrique qui sont prévus chacun pour alimenter un des modules et qui sont respectivement disposés à des distances de l'extrémité en court-circuit du guide d'ondes qui sont égales au quart ou à un multiple impair du quart de la longueur d'onde des signaux transmis par ce guide, chaque module étant par ailleurs relié par une sortie (O1 ou O1') à un élément de recombinaison (12), de type commutateur unipolaire ou combineur, transmettant en aval du dispositif les signaux parvenant de l'un et/ou de l'autre des deux modules.
- Dispositif, selon la revendication 1, dans lequel les deux organes de prélèvement sont des plongeurs ayant des tiges conductrices pénétrant à l'intérieur du guide d'ondes par des trous ménagés dans la paroi de ce guide, ces tiges étant coplanaires et respectivement situées à des distances de l'extrémité en court-circuit du guide d'ondes qui correspondent au quart de la longueur d'onde λ des signaux électromagnétiques que le guide d'ondes transmet et à un multiple impair de ce quart de longueur d'onde.
- Dispositif, selon l'une des revendications 1, 2, dans lequel la distance entre les organes de prélèvement au long du guide d'ondes est égale à la moitié de la longueur d'onde des signaux électromagnétiques transmis par ce guide.
- Dispositif, selon l'une des revendications 1 à 3, dans lequel un filtre sélectif (11) est inséré dans le guide d'ondes qu'il divise en deux cavités dans la partie de ce guide qui est obturée par un élément de court-circuit (7).
- Dispositif, selon la revendication 4, dans lequel le filtre, introduit dans la partie de guide d'ondes qui est obturée par un élément de court-circuit, est un filtre de type ligne à ailettes.
- Dispositif, selon l'une des revendications 1 à 5, dans lequel les modules (1, 1') sont simultanément réalisés sur un même substrat (13) où ils sont reliés par des liaisons microbandes (14, 14') aux tiges des plongeurs des organes de prélèvement.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0010527A FR2812974B1 (fr) | 2000-08-10 | 2000-08-10 | Dispositif pour la transmission de signaux electromagnetiques au travers d'une structure comportant des modules organises pour l'obtention redondance en deux pour un |
FR0010527 | 2000-08-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1184932A1 true EP1184932A1 (fr) | 2002-03-06 |
EP1184932B1 EP1184932B1 (fr) | 2008-12-31 |
Family
ID=8853465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01401723A Expired - Lifetime EP1184932B1 (fr) | 2000-08-10 | 2001-06-28 | Dispositif pour la transmission de signaux électromagnétiques au travers d'une structure comportant des modules organisés pour l'obtention d'une redondance en deux pour un |
Country Status (8)
Country | Link |
---|---|
US (1) | US6573810B2 (fr) |
EP (1) | EP1184932B1 (fr) |
JP (1) | JP2002141712A (fr) |
AT (1) | ATE419656T1 (fr) |
CA (1) | CA2351793C (fr) |
DE (1) | DE60137179D1 (fr) |
ES (1) | ES2320410T3 (fr) |
FR (1) | FR2812974B1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2871951B1 (fr) * | 2004-06-17 | 2006-09-08 | Cnes Epic | Dispositif de transition rntre un guide d'ondes et deux circuits redondants chacun couple a une ligne coplanaire |
US7768451B2 (en) * | 2007-07-23 | 2010-08-03 | Raytheon Company | Methods and apparatus for geometry extra-redundant almost fixed solutions |
JP5044536B2 (ja) * | 2008-12-12 | 2012-10-10 | 株式会社東芝 | 導波管・伝送線路変換器、およびアンテナ装置 |
US9019036B2 (en) | 2010-05-10 | 2015-04-28 | Raytheon Company | Multiple E-probe waveguide power combiner/divider |
JP5983632B2 (ja) * | 2012-02-03 | 2016-09-06 | 日本電気株式会社 | 電磁波伝達シート、及び、電磁波伝送装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1507147A (en) | 1974-09-25 | 1978-04-12 | Marconi Co Ltd | Multiplexing arrangements |
JPS6118204A (ja) * | 1984-07-04 | 1986-01-27 | Fujitsu Ltd | 電力増幅器 |
US5083094A (en) * | 1990-09-28 | 1992-01-21 | Space Systems/Loral, Inc. | Selective power combiner using phase shifters |
JPH0884001A (ja) * | 1994-09-12 | 1996-03-26 | Nec Corp | 直交偏分波器 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5929803U (ja) * | 1982-08-18 | 1984-02-24 | 島田理化工業株式会社 | 同軸導波管変換器 |
JPS59172816A (ja) * | 1983-03-22 | 1984-09-29 | Nec Corp | 高周波電力増幅器 |
US4761625A (en) * | 1986-06-20 | 1988-08-02 | Rca Corporation | Tunable waveguide bandpass filter |
JPS6351702A (ja) * | 1986-08-21 | 1988-03-04 | Shimada Phys & Chem Ind Co Ltd | 導波管形帯域阻止濾波器 |
JPS6370705U (fr) * | 1986-10-28 | 1988-05-12 | ||
JPS63269602A (ja) * | 1987-04-27 | 1988-11-07 | Yokowo Mfg Co Ltd | 複数バンドマイクロ波受信装置 |
US5376901A (en) * | 1993-05-28 | 1994-12-27 | Trw Inc. | Hermetically sealed millimeter waveguide launch transition feedthrough |
US5517203A (en) * | 1994-05-11 | 1996-05-14 | Space Systems/Loral, Inc. | Dielectric resonator filter with coupling ring and antenna system formed therefrom |
JP3388694B2 (ja) * | 1997-09-01 | 2003-03-24 | シャープ株式会社 | 2周波共用一次放射器 |
FR2773270B1 (fr) * | 1997-12-31 | 2000-03-10 | Thomson Multimedia Sa | Emetteur/recepteur d'ondes hyperfrequences |
FR2779294A1 (fr) * | 1998-05-29 | 1999-12-03 | Thomson Multimedia Sa | Dispositif d'emission/reception de signaux |
US6392508B1 (en) * | 2000-03-28 | 2002-05-21 | Nortel Networks Limited | Tuneable waveguide filter and method of design thereof |
-
2000
- 2000-08-10 FR FR0010527A patent/FR2812974B1/fr not_active Expired - Lifetime
-
2001
- 2001-06-28 AT AT01401723T patent/ATE419656T1/de not_active IP Right Cessation
- 2001-06-28 DE DE60137179T patent/DE60137179D1/de not_active Expired - Lifetime
- 2001-06-28 CA CA2351793A patent/CA2351793C/fr not_active Expired - Lifetime
- 2001-06-28 EP EP01401723A patent/EP1184932B1/fr not_active Expired - Lifetime
- 2001-06-28 ES ES01401723T patent/ES2320410T3/es not_active Expired - Lifetime
- 2001-07-05 US US09/898,065 patent/US6573810B2/en not_active Expired - Lifetime
- 2001-08-03 JP JP2001235898A patent/JP2002141712A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1507147A (en) | 1974-09-25 | 1978-04-12 | Marconi Co Ltd | Multiplexing arrangements |
JPS6118204A (ja) * | 1984-07-04 | 1986-01-27 | Fujitsu Ltd | 電力増幅器 |
US5083094A (en) * | 1990-09-28 | 1992-01-21 | Space Systems/Loral, Inc. | Selective power combiner using phase shifters |
JPH0884001A (ja) * | 1994-09-12 | 1996-03-26 | Nec Corp | 直交偏分波器 |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 010, no. 168 (E - 411) 14 June 1986 (1986-06-14) * |
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 07 31 July 1996 (1996-07-31) * |
Also Published As
Publication number | Publication date |
---|---|
DE60137179D1 (de) | 2009-02-12 |
ES2320410T3 (es) | 2009-05-22 |
CA2351793C (fr) | 2010-02-09 |
FR2812974A1 (fr) | 2002-02-15 |
US20020030553A1 (en) | 2002-03-14 |
JP2002141712A (ja) | 2002-05-17 |
FR2812974B1 (fr) | 2003-01-31 |
US6573810B2 (en) | 2003-06-03 |
EP1184932B1 (fr) | 2008-12-31 |
CA2351793A1 (fr) | 2002-02-10 |
ATE419656T1 (de) | 2009-01-15 |
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