EP0232901B1 - Waveguide power divider for a linearly polarized wave - Google Patents
Waveguide power divider for a linearly polarized wave Download PDFInfo
- Publication number
- EP0232901B1 EP0232901B1 EP19870101836 EP87101836A EP0232901B1 EP 0232901 B1 EP0232901 B1 EP 0232901B1 EP 19870101836 EP19870101836 EP 19870101836 EP 87101836 A EP87101836 A EP 87101836A EP 0232901 B1 EP0232901 B1 EP 0232901B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slots
- waveguide
- guide
- disposed
- plane
- 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 - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/165—Auxiliary devices for rotating the plane of polarisation
-
- 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 present invention relates to a power distributor device in a waveguide operating in linear polarization.
- This device allows a distribution of power between several radial channels from a guide, of circular shape for example, supplied with linear polarization.
- the first appointees generally have the disadvantage of large dimensions while the second appointees present problems of adaptation and isolation between channels. Dimensions criteria generally limit the use of such devices to relatively strong coupling levels (> 10 dB).
- the object of the invention is to overcome these drawbacks by means of a very compact device allowing all ranges of coupling.
- the present invention proposes for this purpose a power distributor device in a first circular waveguide operating in linear polarization fed by a wave, of wavelength ⁇ g, in fundamental mode, characterized in that it comprises at its end a second circular guide at the cut-off forming a short-circuit plane with the first guide, and in that it comprises two slots arranged at the periphery of the first guide parallel to the axis of this first guide, at an angle 90 ° in a mean plane perpendicular to this axis at a determined distance from the short-circuit plane so that the energy coupled in the slots is maximum, the radial direction of one of these slots forming an angle determined by relative to the plane of polarization of the incident wave in the mean plane perpendicular to these two slits, and at least one secondary slit parallel to the first two, arranged at a distance k ⁇ g 2 , k being an integer greater than or equal to one; from the mean plane perpendicular to the first two slits such that its radi
- This arrangement makes it possible to obtain significant deviations in the coupling levels between channels and to offer space-saving offers. reduces a significant number of coupled channels.
- the present invention provides a device in which low-pass filters are arranged at each radial slot so as to bring a short-circuit plane at each of these slots for frequencies greater than a determined frequency band, and in which the second guide is also provided at its end with a cut-off guide of smaller diameter, and two radial slots of perpendicular directions arranged at the periphery of the second guide at a determined distance from the short-circuit plane between the first and the second guide.
- this device is a device in which in that the second guide comprises at least one secondary radial slot (47) disposed at k ⁇ g 2 , k being an integer greater than or equal to one, of the mean plane perpendicular to the first two slits.
- This arrangement advantageously makes it possible to transmit several frequency bands.
- the device of the invention comprises a main waveguide 10, of circular shape for example, which extends to a end by a guide 11 of the same shape, but of smaller diameter.
- Two access guides 12, 13 orthogonal to the main guide 10 and orthogonal to each other are coupled to this main guide 10 by two resonant slots 14, 15 situated in the same transverse mean plane at a determined distance 1 from the plane 18 formed by the connection the main guide 10 and guide 11.
- a secondary access guide 16 is arranged perpendicular and radially to the main guide 10 at a distance ⁇ g 2 in the mean plane perpendicular to the slots 14 and 15.
- This access guide 16 is coupled to this main guide 10 by a resonant slot 17.
- a wave linearly polarized according to the fundamental world of wavelength ⁇ g propagates in the main guide 10 from its free end 26.
- the resonant slot 17 shown in FIG. 1, or the slots 23, 24, 25 represented in FIG. 2 ensure the coupling of the components of the wave which are respectively parallel to them, that is to say the components which correspond to the projection of the main polarization according to angles ⁇ i, each angle ⁇ i being the angular position of each slot relative to this polarization.
- junction plane 18 of the main guide 10 and of the guide 11 forms a short-circuit plane, produced by this guide 11 at the cut-off for the fundamental mode in the frequency band considered.
- the slots 14 and 15 have an angular deviation of 90 ° in order to capture all the incident energy.
- the two slots 14 and 15 are arranged at a distance 1 from the short-circuit plane such that the energy coupled into these slots is maximum.
- the direction of one of these two slots forms a determined angle with respect to the plane of polarization of the incident wave in the mean plane perpendicular to these two slots, so as to fix the power distribution between these two slots.
- the secondary coupling slots distributed over the main guide 10 are located at a suitable distance (modulo ⁇ g / 2) from a short-circuit plane for the fundamental mode in the frequency band considered.
- the angular positions of these slots with respect to the direction of polarization of the wave therefore define the expected coupling values.
- FIGS. 3 and 4 the component 30 of the polarization of the incident wave 31 perpendicular to the plane of the slot 17 is transmitted, on the other hand, the component 32 parallel to this plane is not, it is coupled, for example at 3 dB, in this slot 17;
- FIG. 3 representing a cross section of the device of the invention in a plane perpendicular to the slot 17, with a schematic representation of the direction of polarization 31 of the incident wave and that of its two orthogonal components 30 and 32 considered before coupling in the slot 17, and Figure 4 showing the same data 30 ⁇ , 31 ⁇ , 32 ⁇ after coupling.
- the angle of the polarization of the incident wave ⁇ relative to the vertical varied and became an angle ⁇ after coupling in the slot 17.
- the distributing device of the invention is not limited to a single frequency band, a low-pass filter (35, 36, 37) can be arranged, as shown in FIG. 5, at each slot coupled to the first main guide. ) which brings a short-circuit plane to the level of the corresponding slot (14, 15, 17) for the frequencies higher than the frequency band to be extracted.
- the second guide 11 at the cut-off may also be provided with several slots, for example three in number (44, 45, 47) as in FIG. 1, at its periphery and coupled with it in the same way as for the first main guide, a third guide 50 at the cutoff being arranged at the end of this second guide.
- Low-pass filters making it possible to select a frequency band greater than the first, can likewise be placed at the level of these three slots 44, 45 and 47.
Landscapes
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Description
La présente invention se rapporte à un dispositif répartiteur de puissance dans un guide d'ondes fonctionnant en polarisation linéaire.The present invention relates to a power distributor device in a waveguide operating in linear polarization.
Ce dispositif permet une répartition de puissance entre plusieurs voies radiales à partir d'un guide, de forme par exemple circulaire, alimenté en polarisation linéaire.This device allows a distribution of power between several radial channels from a guide, of circular shape for example, supplied with linear polarization.
En matière de répartiteurs de puissance, on connaît les différents types de coupleurs (plan E, plan H, en croix) et les diviseurs de puissance plan E.In terms of power distributors, we know the different types of couplers (plane E, plane H, crosswise) and power dividers plane E.
Les premiers nommés présentent généralement l'inconvénient de dimensions importantes tandis que les seconds nommés présentent des problèmes d'adaptation et d'isolation entre voies. Des critères d'encombrement limitent en général l'utilisation de tels dispositifs à des niveaux de couplage relativement forts ( > 10 dB).The first appointees generally have the disadvantage of large dimensions while the second appointees present problems of adaptation and isolation between channels. Dimensions criteria generally limit the use of such devices to relatively strong coupling levels (> 10 dB).
L'invention a pour objet de pallier ces inconvénients grâce à un dispositif très compact permettant toutes les gammes de couplage.The object of the invention is to overcome these drawbacks by means of a very compact device allowing all ranges of coupling.
La présente invention propose à cet effet un dispositif répartiteur de puissance dans un premier guide d'ondes circulaire fonctionnant en polarisation linéaire alimenté par une onde, de longueur d'onde λ g, en mode fondamental, caractérisé en ce qu'il comprend à son extrémité un second guide circulaire à la coupure formant un plan de court-circuit avec le premier guide, et en ce qu'il comprend deux fentes disposées à la périphérie du premier guide parallèlement à l'axe de ce premier guide, en formant un angle de 90° dans un plan moyen perpendiculaire à cet axe à une distance déterminée du plan de court-circuit de manière telle que l'énergie couplée dans les fentes soit maximum, la direction radiale de l'une de ces fentes formant un angle déterminé par rapport au plan de polarisation de l'onde incidente dans le plan moyen perpendiculaire à ces deux fentes, et au moins une fente secondaire parallèle aux deux premières, disposée à une distance k 
Cette disposition permet d'obtenir des écarts importants des niveaux de couplage entre voies et de proposer sous un encombrement réduit un nombre important de voies couplées.This arrangement makes it possible to obtain significant deviations in the coupling levels between channels and to offer space-saving offers. reduces a significant number of coupled channels.
Avantageusement la présente invention propose un dispositif dans lequel des filtres passe-bas sont disposés au niveau de chaque fente radiale de manière à ramener un plan de court-circuit au niveau de chacune de ces fentes pour des fréquences supérieures à une bande de fréquence déterminée, et dans lequel le second guide est lui aussi muni en son extrémité d'un guide à la coupure de diamètre inférieur, et de deux fentes radiales de directions perpendiculaires disposées à la périphérie du second guide à une distance déterminée du plan de court-cicuit entre le premier et le second guide.Advantageously, the present invention provides a device in which low-pass filters are arranged at each radial slot so as to bring a short-circuit plane at each of these slots for frequencies greater than a determined frequency band, and in which the second guide is also provided at its end with a cut-off guide of smaller diameter, and two radial slots of perpendicular directions arranged at the periphery of the second guide at a determined distance from the short-circuit plane between the first and the second guide.
Selon une forme préférée de réalisation de l'invention, ce dispositif est un dispositif dans lequel en ce que le second guide comprend au moins une fente radiale secondaire (47) disposée à k 
Cette disposition permet avantageusement de transmettre plusieurs bandes de fréquences.This arrangement advantageously makes it possible to transmit several frequency bands.
Les caractéristiques et avantages de l'invention ressortiront d'ailleurs de la description qui va suivre, à titre d'exemple non limitatif, en référence aux figures annexées :
- La figure 1 illustre une vue schématique en perspective d'une réalisation du dispositif de l'invention comportant un guide principal muni de trois guides d'accès ;
- La figure 2 illustre une vue schématique en perspective d'une réalisation du dispositif de l'invention comportant un guide principal muni de cinq guides d'accès ;
- Les figures 3 et 4 sont deux représentations schématiques de la direction du plan de polarisation de l'onde incidente dans un plan de coupe du guide d'accès secondaire orthogonalement au guide principal, respectivement avant et après couplage dans ce guide d'accès ;
- La figure 5 illustre une vue schématique en perspective d'une variante du dispositif de l'invention regroupant en série deux dispositifs comme celui représenté à la figure 1.
- Figure 1 illustrates a schematic perspective view of an embodiment of the device of the invention comprising a main guide provided with three access guides;
- FIG. 2 illustrates a schematic perspective view of an embodiment of the device of the invention comprising a main guide provided with five access guides;
- Figures 3 and 4 are two schematic representations of the direction of the plane of polarization of the incident wave in a section plane of the secondary access guide orthogonally to the main guide, respectively before and after coupling in this access guide;
- FIG. 5 illustrates a schematic perspective view of a variant of the device of the invention grouping together in series two devices like the one represented in FIG. 1.
Le dispositif de l'invention comporte un guide d'ondes principal 10, de forme par exemple circulaire, qui se prolonge à une extrémité par un guide 11 de même forme, mais de diamètre inférieur.The device of the invention comprises a
Deux guides d'accès 12, 13 orthogonaux au guide principal 10 et orthogonaux entre eux sont couplés à ce guide principal 10 par deux fentes résonantes 14, 15 situées dans un même plan moyen transverse à une distance 1 déterminée du plan 18 formé par la liaison du guide principal 10 et du guide 11.Two
Sur la figure 1 un guide d'accès secondaire 16 est disposé perpendiculairement et radialement au guide principal 10 à une distance 
Sur la figure 2 plusieurs guides d'accès 20, 21, 22 secondaires, situés à des distances k 
En fonctionnement une onde polarisée linéairement selon le monde fondamental de longueur d'onde λg, se propage dans le guide principal 10 à partir de son extrémité libre 26. La fente résonante 17 représentée à la figure 1, ou les fentes 23, 24, 25 représentées à la figure 2 assurent le couplage des composantes de l'onde qui leur sont respectivement parallèles, c'est-à-dire les composantes qui correspondent à la projection de la polarisation principale suivant des angles φ i, chaque angle φ i étant la position angulaire de chaque fente par rapport à cette polarisation.In operation, a wave linearly polarized according to the fundamental world of wavelength λg, propagates in the
Le plan de jonction 18 du guide principal 10 et du guide 11 forme un plan de court-circuit, réalisé par ce guide 11 à la coupure pour le mode fondamental dans la bande de fréquence considérée.The
Les fentes 14 et 15 présentent un écart angulaire de 90° afin de capter toute l'énergie incidente. De manière connue de l'homme de l'art les deux fentes 14 et 15 sont disposées à une distance 1 du plan de court-circuit telle que l'énergie couplée dans ces fentes soit maximum. La direction de l'une de ces deux fentes forme un angle déterminé par rapport au plan de polarisation de l'onde incidente dans le plan moyen perpendiculaire à ces deux fentes, de manière à fixer la répartition de puissance entre ces deux fentes.The
Les fentes de couplages secondaires réparties sur le guide principal 10 sont situées à une distance convenable (moduloλ g/2) d'un plan de court-circuit pour le mode fondamental dans la bande de fréquence considérée. Les positions angulaires de ces fentes par rapport à la direction de polarisation de l'onde définissent donc les valeurs de couplages attendues.The secondary coupling slots distributed over the
Ainsi, comme représenté aux figures 3 et 4 la composante 30 de la polarisation de l'onde incidente 31 perpendiculaire au plan de la fente 17 est transmise, par contre la composante 32 parallèle à ce plan ne l'est pas, elle est couplée, par exemple à 3 dB, dans cette fente 17 ; la figure 3 représentant une coupe transversale du dispositif de l'invention dans un plan perpendiculaire à la fente 17, avec une représentation schématique de la direction de polarisation 31 de l'onde incidente et celle de ses deux composantes orthogonales 30 et 32 considérées avant couplage dans le fente 17, et la figure 4 représentant les mêmes données 30ʹ, 31ʹ, 32ʹ après couplage. L'angle de la polarisation de l'onde incidente φ par rapport à la verticale a varié et est devenu un angle φʹ après couplage dans le fente 17.Thus, as shown in FIGS. 3 and 4, the
Le dispositif répartiteur de l'invention n'est pas limité à une seule bande de fréquence, on peut disposer, comme représenté à la figure 5 au niveau de chaque fente couplée au premier guide principal un filtre passe-bas (35, 36, 37) qui ramène un plan de court-circuit au niveau de la fente correspondante (14, 15, 17) pour les fréquences supérieures à la bande de fréquences à extraire.The distributing device of the invention is not limited to a single frequency band, a low-pass filter (35, 36, 37) can be arranged, as shown in FIG. 5, at each slot coupled to the first main guide. ) which brings a short-circuit plane to the level of the corresponding slot (14, 15, 17) for the frequencies higher than the frequency band to be extracted.
Le deuxième guide 11 à la coupure peut-être lui aussi muni de plusieurs fentes, par exemple au nombre de trois (44, 45, 47) comme sur la figure 1, à sa périphérie et couplées avec lui de même manière que pour le premier guide principal, un troisième guide 50 à la coupure étant disposé à l'extrémité de ce second guide.The
Des filtres passe-bas, permettant de sélectionner une bande de fréquences supérieure à la première peuvent de même être alors disposés au niveau de ces trois fentes 44, 45 et 47.Low-pass filters, making it possible to select a frequency band greater than the first, can likewise be placed at the level of these three
Il est donc possible d'avoir aussi plusieurs guides couplés à différentes fentes, de la manière décrite précédemment.It is therefore possible to also have several guides coupled to different slots, in the manner described above.
On peut faire tourner, en entrée du guide, le plan de polarisation de l'onde incidente, de manière discrète ou de manière continue avec un générateur. On obtient alors pour chaque sortie couplée, formée d'une fente et d'un guide d'accès, des niveaux de signaux qui évoluent.You can rotate, at the guide entry, the polarization plane of the incident wave, discretely or continuously with a generator. We then obtain for each coupled output, formed by a slot and an access guide, evolving signal levels.
Il est bien entendu que la présente invention n'a été décrite et représentée qu'à titre d'exemple préférentiel et que l'on pourra remplacer ses éléments constitutifs par des éléments équivalents sans pour autant sortir du cadre de l'invention.It is understood that the present invention has only been described and shown as a preferred example and that its constituent elements can be replaced by equivalent elements without departing from the scope of the invention.
Claims (4)
- A power distributor device in a first circular waveguide (10) operating in linear polarization and fed by a wave in fundamental mode and of wavelength λg, the device being characterized in that it comprises a second circular waveguide (11) at its end at the cutoff forming a short circuit plane (18) with the first waveguide, and in that it includes two slots (14, 15) disposed in the periphery of the first waveguide parallel to the axis of said first waveguide, forming an angle of 90° in a mean plane perpendicular to said axis, and at a determined distance from the short circuit plane (18) so that the energy coupled in the slots is a maximum, the radial direction of one of these slots forming a determined angle relative to the plane of polarization of the incident wave in the mean plane perpendicular to these two slots (14, 15), and at least one secondary slot (17) parallel to the first two slots, disposed at a distance k.λg/2 (where k is an integer greater than or equal to unity) from the mean plane perpendicular to the first two slots (14, 15) such that its radial direction forms a determined angle relative to the plane of polarization of the wave in the mean plane perpendicular to said slot.
- A device according to claim 1, characterized in that lowpass filters (35, 36, 37) are disposed on each of the slots (14, 15, 17) so as to cause each of these slots to appear as a short circuit for frequencies higher than a determined frequency band, and in that the second guide (11) is also provided at its end with a circular waveguide (50) of smaller diameter, disposed at the cutoff, and with two slots (44, 45) parallel to the axis of the first waveguide and forming an angle of 90° in a mean plane perpendicular to said axis, being disposed at the periphery of the second waveguide (11) at a determined distance from the short circuit plane between the first and second waveguide.
- A device according to claim 2, characterized in that the second waveguide comprises at least one secondary slot (47) parallel to the other slots and disposed at k.λg/2 (where k is an integer equal to or greater than unity) from the mean plane perpendicular to the first two slots.
- A device according to any previous claim, characterized in that each resonant slot is coupled to an access waveguide that is rectangular in shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8601770 | 1986-02-10 | ||
| FR8601770A FR2594259B1 (en) | 1986-02-10 | 1986-02-10 | POWER DISTRIBUTOR DEVICE IN A WAVEGUIDE OPERATING IN LINEAR POLARIZATION. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0232901A1 EP0232901A1 (en) | 1987-08-19 |
| EP0232901B1 true EP0232901B1 (en) | 1991-10-16 |
Family
ID=9331962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19870101836 Expired - Lifetime EP0232901B1 (en) | 1986-02-10 | 1987-02-10 | Waveguide power divider for a linearly polarized wave |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0232901B1 (en) |
| DE (1) | DE3773692D1 (en) |
| ES (1) | ES2026470T3 (en) |
| FR (1) | FR2594259B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064846A (en) * | 2014-06-27 | 2014-09-24 | 西安空间无线电技术研究所 | Miniaturized Ku frequency band power combiner |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544670B (en) * | 2012-01-16 | 2013-12-04 | 中国船舶重工集团公司第七二三研究所 | Waveguide-slot power division network and process realizing method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2766430A (en) * | 1953-04-02 | 1956-10-09 | Gen Precision Lab Inc | Microwave power divider |
| US2759099A (en) * | 1954-05-20 | 1956-08-14 | Rca Corp | Plural-source coupling arrangements |
| GB794509A (en) * | 1955-03-17 | 1958-05-07 | British Thomson Houston Co Ltd | Improvements in and relating to radar aerial arrays |
| CH391804A (en) * | 1961-12-08 | 1965-05-15 | Siemens Ag Albis | Transmit / receive switch |
| US4052724A (en) * | 1974-12-20 | 1977-10-04 | Mitsubishi Denki Kabushiki Kaisha | Branching filter |
| US4420756A (en) * | 1981-01-19 | 1983-12-13 | Trw Inc. | Multi-mode tracking antenna feed system |
-
1986
- 1986-02-10 FR FR8601770A patent/FR2594259B1/en not_active Expired
-
1987
- 1987-02-10 ES ES87101836T patent/ES2026470T3/en not_active Expired - Lifetime
- 1987-02-10 DE DE8787101836T patent/DE3773692D1/en not_active Expired - Fee Related
- 1987-02-10 EP EP19870101836 patent/EP0232901B1/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064846A (en) * | 2014-06-27 | 2014-09-24 | 西安空间无线电技术研究所 | Miniaturized Ku frequency band power combiner |
| CN104064846B (en) * | 2014-06-27 | 2016-06-01 | 西安空间无线电技术研究所 | A kind of miniaturization Ku frequency band power synthesizer |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0232901A1 (en) | 1987-08-19 |
| ES2026470T3 (en) | 1992-05-01 |
| FR2594259A1 (en) | 1987-08-14 |
| FR2594259B1 (en) | 1988-09-16 |
| DE3773692D1 (en) | 1991-11-21 |
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