EP0937310A1 - Filtering device with metal cavity provided with dielectric inserts - Google Patents
Filtering device with metal cavity provided with dielectric insertsInfo
- Publication number
- EP0937310A1 EP0937310A1 EP97913235A EP97913235A EP0937310A1 EP 0937310 A1 EP0937310 A1 EP 0937310A1 EP 97913235 A EP97913235 A EP 97913235A EP 97913235 A EP97913235 A EP 97913235A EP 0937310 A1 EP0937310 A1 EP 0937310A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cavity
- coupling
- dielectric inserts
- metal
- end walls
- 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.)
- Ceased
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/06—Cavity resonators
Definitions
- the present invention relates to filtering devices in the microwave domain, of the type having a metal cavity with dielectric inserts.
- the invention particularly advantageously finds application for filtering in the field of telecommunications by satellites.
- Metal cavities have long been used for filtering hyper frequencies. Recent studies have shown that it is advantageous, in order to improve the electrical performance of the resonators constituted by such metal cavities, to charge them by dielectric inserts extending transversely in the cavity. In this respect, it is advantageous to refer to the following different publications:
- the dielectric inserts indeed make it possible to distance the strong electromagnetic fields from the metal end walls of the cavity, and therefore to confine the energy in the central part of the cavity.
- An object of the invention is to provide a filtering device of the type having a metal cavity with dielectric inserts, which makes it possible to solve this problem and which, moreover, has particularly satisfactory properties, in particular at high powers.
- Another object of the invention is therefore to propose a device with a metal cavity in which the dielectric inserts define several resonators allowing said device to carry out multi-pole filtering and in which means are provided for coupling between these different resonators.
- metallic irises extending transversely either at the level of the end walls of the cavity, that is to say inside thereof between two resonators defined by dielectric inserts, made it possible to produce particularly satisfactory couplings and to solve the problem due to the coupling of the resonant parasitic modes in the dielectric inserts.
- the invention provides a filtering device comprising a metal cavity closed by two end walls extending transversely with respect to the axis of said cavity, as well as at least two dielectric inserts defining a resonator in said cavity, characterized in that it comprises at least one coupling iris which also extends transversely with respect to said axis.
- this device comprises two coupling irises distributed respectively over one and the other of the two end walls and which couple said cavity with metal waveguides superimposed on said end walls.
- it may include a coupling iris extending transversely between two resonators each defined between two dielectric inserts.
- - Figure 1 schematically illustrates a possible application for the invention
- - Figure 2 is a graph on which the external coupling coefficient of the device illustrated in Figure 1 has been plotted, as a function of the length of the irises of this device;
- FIG. 1 schematically illustrates another possible application for the invention
- - Figure 4 is a graph on which the intercavity coupling coefficient of the device illustrated in Figure 3 has been plotted, as a function of the length of the iris of this device.
- the coupling device illustrated in FIG. 1 comprises a metal cavity 1, which is of the cylindrical type.
- This cavity 1 is defined by a cylindrical side wall 2 and by two end walls 3a and 3b which close said cavity 1 by extending transversely relative to its axis.
- FIG. 2 gives, for different lengths of rectangular coupling iris, the values of the external quality coefficient of a filtering device of the type illustrated in FIG. 1. It is recalled that from a point electrically, a coupling device as illustrated in FIG. 1 is characterized by:
- Q "- Q ⁇ 1 + Q; 1 The values given for Q e in FIG. 2 correspond to the case of a cylindrical metallic cavity 39.7 mm in diameter having dielectric inserts 4a, 4b made of sapphire with a thickness of 1.92 mm, the distance separating these inserts dielectric 4a, 4b of the walls 3a and 3b being 6.4 mm, the height separating these two dielectric inserts being 12.8 mm, the coupling irises being 2 mm thick, with a width of
- the metal guides 6a, 6b being guides of type G90 with a height of
- the invention is not limited to cases where the cylindrical cavity is of the cylindrical type, but also applies in the case of metal cavities having another shape.
- FIG. 3 a metal cavity 11, of cylindrical type, which has a plurality of dielectric inserts 14a to 14d, which define in said cavity, has been illustrated.
- resonators 15a, 15b are coupled via a metal iris 17, for example of rectangular, circular or cross shape.
- the metallic iris 17 is advantageously placed at the level of the middle height of the cavity 11, so that said cavity 11 has a structure which is symmetrical on either side of said iris metallic 17.
- the graph of FIG. 4 shows the intercavity coupling values of a structure of the type illustrated in FIG. 3, in the case of a metal cavity 11 39.7 mm in diameter having four dielectric inserts 14a to 14d constituted by sapphire pellets with a thickness of 1.92 mm, the inserts 14a (resp. 14c) and 14b (resp. 14d) being separated by a height of 12.8 mm, the height of separation between the dielectric pads and the metal end walls 13a, 13b of the cavity 11 or the coupling iris 17 disposed inside the cavity 11 being 6.4 mm, the coupling iris 17 having a rectangular opening a 2 mm thick, 1 mm wide and variable length.
- This variation does not entail coupling of the modes of the dielectric inserts and the environment. electromagnetic of the inserts is not modified.
- the filtering devices which have just been described have conventional coupling values for this type of device and satisfy the usual insulation constraints.
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Abstract
The invention concerns a filtering device comprising a metal cavity (1, 11) closed by two end walls (3a, 3b; 13a, 13b) extending transversely relative to the axis of said cavity (1, 11), and at least two dielectric inserts (4a, 4b; 14a to 14d) defining a resonator (5, 15a, 15b) in said cavity, characterised in that it comprises at least one coupling iris (7a, 7b; 17) which also extends transversely relative to said axis.
Description
DISPOSITIF DE FILTRAGE A CAVITE METALLIQUE A INSERTS DIELECTRIQUES METAL CAVITY FILTERING DEVICE WITH DIELECTRIC INSERTS
La présente invention est relative à des dispositifs de filtrage dans le domaine des hyperf réquences, du type présentant une cavité métallique à inserts diélectriques. L'invention trouve en particulier avantageusement application pour le filtrage dans le domaine des télécommunications par satellites.The present invention relates to filtering devices in the microwave domain, of the type having a metal cavity with dielectric inserts. The invention particularly advantageously finds application for filtering in the field of telecommunications by satellites.
Les cavités métalliques sont utilisées depuis longtemps pour le filtrage des hyperf réquences . Des études récentes ont montré qu'il était intéressant, pour améliorer les performances électriques des résonateurs que constituent de telles cavités métalliques, de les charger par des inserts diélectriques s 'étendant transversalement dans la cavité. On pourra à cet égard avantageusement se référer aux différentes publications suivantes :Metal cavities have long been used for filtering hyper frequencies. Recent studies have shown that it is advantageous, in order to improve the electrical performance of the resonators constituted by such metal cavities, to charge them by dielectric inserts extending transversely in the cavity. In this respect, it is advantageous to refer to the following different publications:
[1] R. Comte, S. Verdeyme, P. Guillon, "New concept for low loss microwave devices", Electronics Letters, Vol. 30, n° 5, 3 March 1994, 1995 MTT-S Digest, Orlando, Vol. 3, pp 1535-1538 ;[1] R. Comte, S. Verdeyme, P. Guillon, "New concept for low loss microwave devices", Electronics Letters, Vol. 30, n ° 5, 3 March 1994, 1995 MTT-S Digest, Orlando, Vol. 3, pp 1535-1538;
[2] R. Comte, S. Verdeyme, P. Guillon, "Rigorous design of multimodal low losses microwave cavity", ESA workshop on advanced CAD for microwave filters and passive devices, 1995, ESTEC, pp 225-231 ; [3] R. Comte, S. Gendraud, S. Verdeyme,[2] R. Comte, S. Verdeyme, P. Guillon, "Rigorous design of multimodal low losses microwave cavity", ESA workshop on advanced CAD for microwave filters and passive devices, 1995, ESTEC, pp 225-231; [3] R. Comte, S. Gendraud, S. Verdeyme,
P. Guillon, C. Boschet, B. Theron, "A high Q factor microwave cavity", 1995, MTT-S Digest, Orlando, Vol. 3, pp 1535-1538.P. Guillon, C. Boschet, B. Theron, "A high Q factor microwave cavity", 1995, MTT-S Digest, Orlando, Vol. 3, pp 1535-1538.
A ce jour toutefois, on considérait que compte tenu de la répartition du champ dans de telles cavités à inserts diélectriques, leur couplage à des guides d'ondes d'entrée et de sortie - par l'intermédiaire d'iris métalliques ou de sondes coaxiales - ne pouvait se faire qu'en positionnant les iris de couplage ou sondes coaxiales au niveau des parois latérales de ces cavités et
non pas au niveau de leurs parois d'extrémité.To date, however, it was considered that given the distribution of the field in such cavities with dielectric inserts, their coupling to input and output waveguides - by means of metal iris or coaxial probes - could only be done by positioning the coupling irises or coaxial probes at the side walls of these cavities and not at their end walls.
Les inserts diélectriques permettent en effet d'éloigner les forts champs électromagnétiques des parois métalliques d'extrémité de la cavité, et donc de confiner l'énergie dans la partie centrale de la cavité.The dielectric inserts indeed make it possible to distance the strong electromagnetic fields from the metal end walls of the cavity, and therefore to confine the energy in the central part of the cavity.
Les niveaux d'énergie sont donc très faibles au voisinage des parois d'extrémité de la cavité et c'est pourquoi on considérait que l'on ne pouvait pas obtenir de couplage correct au niveau de ces parois. Toutefois, il se pose avec un couplage par les parois latérales de la cavité un problème du fait du couplage des modes parasites résonnant dans les inserts diélectriques, notamment pour de fortes valeurs de couplage d'entrée. Un but de l'invention est de proposer un dispositif de filtrage du type présentant une cavité métallique à inserts diélectriques, qui permet de résoudre ce problème et qui, en outre, présente des propriétés particulièrement satisfaisantes, notamment aux fortes puissances.The energy levels are therefore very low in the vicinity of the end walls of the cavity and this is why it was considered that it was not possible to obtain correct coupling at the level of these walls. However, there is a problem with coupling through the side walls of the cavity due to the coupling of the parasitic modes resonating in the dielectric inserts, in particular for high input coupling values. An object of the invention is to provide a filtering device of the type having a metal cavity with dielectric inserts, which makes it possible to solve this problem and which, moreover, has particularly satisfactory properties, in particular at high powers.
Par ailleurs, toujours du fait de la répartition du champ dans de telles cavités à inserts diélectriques, on considérait également qu'il n'était pas possible de coupler entre eux plusieurs résonateurs définis dans une même cavité métallique par une pluralité d' inserts diélectriques .Furthermore, still due to the distribution of the field in such cavities with dielectric inserts, it was also considered that it was not possible to couple together several resonators defined in the same metal cavity by a plurality of dielectric inserts.
Un autre but de l'invention est donc de proposer un dispositif à cavité métallique dans lequel les inserts diélectriques définissent plusieurs résonateurs permettant audit dispositif de réaliser un filtrage multipôles et dans lequel il est prévu des moyens permettant le couplage entre ces différents résonateurs.Another object of the invention is therefore to propose a device with a metal cavity in which the dielectric inserts define several resonators allowing said device to carry out multi-pole filtering and in which means are provided for coupling between these different resonators.
Il a été constaté par les inventeurs que contrairement à ce à quoi il s'attendaient, des iris métalliques s 'étendant transversalement soit au niveau des
parois d'extrémité de la cavité, soit à l'intérieur de celle-ci entre deux résonateurs définis par des inserts diélectriques, permettaient de réaliser des couplages particulièrement satisfaisants et de résoudre le problème dû au couplage des modes parasites résonnants dans les inserts diélectriques .It has been found by the inventors that, contrary to what they expected, metallic irises extending transversely either at the level of the end walls of the cavity, that is to say inside thereof between two resonators defined by dielectric inserts, made it possible to produce particularly satisfactory couplings and to solve the problem due to the coupling of the resonant parasitic modes in the dielectric inserts.
Ainsi, l'invention propose un dispositif de filtrage comportant une cavité métallique fermée par deux parois d'extrémité s 'étendant transversalement par rapport à l'axe de ladite cavité, ainsi qu'au moins deux inserts diélectriques définissant un résonateur dans ladite cavité, caractérisé en ce qu'il comporte au moins un iris de couplage qui s'étend également transversalement par rapport audit axe . Notamment, avantageusement, ce dispositif comporte deux iris de couplage répartis respectivement sur l'une et l'autre des deux parois d'extrémité et qui réalisent le couplage de ladite cavité avec des guides d'ondes métalliques superposés auxdites parois d'extrémité. Egalement, il peut comporter un iris de couplage s 'étendant transversalement entre deux résonateurs définis chacun entre deux inserts diélectriques.Thus, the invention provides a filtering device comprising a metal cavity closed by two end walls extending transversely with respect to the axis of said cavity, as well as at least two dielectric inserts defining a resonator in said cavity, characterized in that it comprises at least one coupling iris which also extends transversely with respect to said axis. In particular, advantageously, this device comprises two coupling irises distributed respectively over one and the other of the two end walls and which couple said cavity with metal waveguides superimposed on said end walls. Also, it may include a coupling iris extending transversely between two resonators each defined between two dielectric inserts.
D'autres caractéristiques et avantages de l'invention ressortiront encore de la description qui suit. Cette description est purement illustrative et non limitative. Elle doit être lue en regard des figures annexées sur lesquelles :Other characteristics and advantages of the invention will emerge from the description which follows. This description is purely illustrative and not limiting. It should be read in conjunction with the appended figures in which:
- la figure 1 illustre schématiquement une application possible pour l'invention ; - la figure 2 est un graphe sur lequel on a porté le coefficient de couplage extérieur du dispositif illustré sur la figure 1, en fonction de la longueur des iris de ce dispositif ;- Figure 1 schematically illustrates a possible application for the invention; - Figure 2 is a graph on which the external coupling coefficient of the device illustrated in Figure 1 has been plotted, as a function of the length of the irises of this device;
- la figure 3 illustre schématiquement une autre application possible pour l'invention ;
- la figure 4 est un graphe sur lequel on a porté le coefficient de couplage intercavité du dispositif illustré sur la figure 3, en fonction de la longueur de l'iris de ce dispositif. Le dispositif de couplage illustré sur la figure 1 comporte une cavité métallique 1, qui est de type cylindrique.- Figure 3 schematically illustrates another possible application for the invention; - Figure 4 is a graph on which the intercavity coupling coefficient of the device illustrated in Figure 3 has been plotted, as a function of the length of the iris of this device. The coupling device illustrated in FIG. 1 comprises a metal cavity 1, which is of the cylindrical type.
Cette cavité 1 est définie par une paroi latérale cylindrique 2 et par deux parois d'extrémité 3a et 3b qui ferment ladite cavité 1 en s 'étendant transversalement par rapport à son axe.This cavity 1 is defined by a cylindrical side wall 2 and by two end walls 3a and 3b which close said cavity 1 by extending transversely relative to its axis.
Deux pastilles diélectriques 4a et 4b s'étendent transversalement dans ladite cavité, pour définir dans celle-ci un résonateur central 5. Cette cavité 1 est couplée à des guides métalliques rectangulaires 6a, 6b par l'intermédiaire d'iris métalliques 7a, 7b positionnés sur les parois d'extrémité 3a, 3b de la cavité 1, en étant centrés sur l'axe de celle-ci. Le graphe de la figure 2 donne, pour différentes longueurs d'iris de couplage de type rectangulaire, les valeurs de coefficient de qualité extérieure d'un dispositif de filtrage du type de celui illustré sur la figure 1. On rappelle que d'un point de vue électrique un dispositif de couplage tel qu'illustré sur la figure 1 est caractérisé par :Two dielectric pads 4a and 4b extend transversely in said cavity, to define therein a central resonator 5. This cavity 1 is coupled to rectangular metallic guides 6a, 6b by means of metallic irises 7a, 7b positioned on the end walls 3a, 3b of the cavity 1, while being centered on the axis of the latter. The graph in FIG. 2 gives, for different lengths of rectangular coupling iris, the values of the external quality coefficient of a filtering device of the type illustrated in FIG. 1. It is recalled that from a point electrically, a coupling device as illustrated in FIG. 1 is characterized by:
- son coefficient de surtension en charge noté QL,- its load overvoltage coefficient noted Q L ,
- son coefficient de qualité extérieure Qe lié au couplage entre les guides et la cavité à inserts diélectriques,- its external quality coefficient Q e linked to the coupling between the guides and the cavity with dielectric inserts,
- son coefficient de surtension à vide noté Q0, ces termes étant reliés par la relation suivante :- its no-load overvoltage coefficient noted Q 0 , these terms being linked by the following relation:
Q" - QÔ 1 + Q; 1
Les valeurs données pour Qe sur la figure 2 correspondent au cas d'une cavité métallique cylindrique de 39,7 mm de diamètre présentant des inserts diélectriques 4a, 4b en saphir d'une épaisseur de 1,92 mm, la distance séparant ces inserts diélectriques 4a, 4b des parois 3a et 3b étant de 6,4 mm, la hauteur séparant ces deux inserts diélectriques étant de 12,8 mm, les iris de couplage étant d'une épaisseur de 2 mm, d'une largeur deQ "- QÔ 1 + Q; 1 The values given for Q e in FIG. 2 correspond to the case of a cylindrical metallic cavity 39.7 mm in diameter having dielectric inserts 4a, 4b made of sapphire with a thickness of 1.92 mm, the distance separating these inserts dielectric 4a, 4b of the walls 3a and 3b being 6.4 mm, the height separating these two dielectric inserts being 12.8 mm, the coupling irises being 2 mm thick, with a width of
I mm et d'une longueur variable, les guides métalliques 6a, 6b étant des guides de type G90 d'une hauteur deI mm and of variable length, the metal guides 6a, 6b being guides of type G90 with a height of
22,9 mm et d'une largeur de 10,16 mm.22.9 mm and a width of 10.16 mm.
La courbe qui est portée sur cette figure 2The curve which is shown in this figure 2
(points symbolisés par des Δ) est une courbe théorique calculée par simulation. On a également porté sur cette figure 2 plusieurs points de mesure (points symbolisés par des o) obtenus expérimentalement.(points symbolized by Δ) is a theoretical curve calculated by simulation. We have also focused on this figure 2 several measurement points (points symbolized by o) obtained experimentally.
Bien entendu, selon le type de filtrage que l'on souhaite réaliser, d'autres types d'iris pourraient être utilisés et en particulier des iris en croix. Egalement, l'invention n'est pas limitée aux cas où la cavité cylindrique est de type cylindrique, mais s'applique également dans le cas de cavités métalliques présentant une autre forme.Of course, depending on the type of filtering that one wishes to carry out, other types of iris could be used and in particular cross irises. Also, the invention is not limited to cases where the cylindrical cavity is of the cylindrical type, but also applies in the case of metal cavities having another shape.
On constate sur cette figure 2 que les mesures expérimentales sont en bon accord avec les résultats théoriques .It can be seen in this figure 2 that the experimental measurements are in good agreement with the theoretical results.
On se réfère maintenant à la figure 3 sur laquelle a été illustrée une cavité métallique 11, de type cylindrique, qui présente une pluralité d'inserts diélectrique 14a à 14d, qui définissent dans ladite cavitéReferring now to FIG. 3, a metal cavity 11, of cylindrical type, which has a plurality of dielectric inserts 14a to 14d, which define in said cavity, has been illustrated.
II deux résonateurs 15a, 15b répartis dans la hauteur de ladite cavité.II two resonators 15a, 15b distributed in the height of said cavity.
Ces deux résonateurs 15a, 15b sont couplés par l'intermédiaire d'un iris métallique 17, par exemple de forme rectangulaire, circulaire ou en croix.
Afin d'obtenir un bon couplage des modes propageant, l'iris métallique 17 est avantageusement disposé au niveau de la hauteur milieu de la cavité 11, de sorte que ladite cavité 11 présente une structure qui est symétrique de part et d'autre dudit iris métallique 17.These two resonators 15a, 15b are coupled via a metal iris 17, for example of rectangular, circular or cross shape. In order to obtain a good coupling of the propagating modes, the metallic iris 17 is advantageously placed at the level of the middle height of the cavity 11, so that said cavity 11 has a structure which is symmetrical on either side of said iris metallic 17.
On a porté sur le graphe de la figure 4 des valeurs de couplage intercavité d'une structure du type de celle illustrée sur la figure 3, dans le cas d'une cavité métallique 11 de 39,7 mm de diamètre présentant quatre inserts diélectriques 14a à 14d constitués par des pastilles en saphir d'une épaisseur de 1,92 mm, les inserts 14a (resp. 14c) et 14b (resp. 14d) étant séparés par une hauteur de 12,8 mm, la hauteur de séparation entre les pastilles diélectriques et les parois métalliques d'extrémité 13a, 13b de la cavité 11 ou l'iris de couplage 17 disposé à l'intérieur de la cavité 11 étant de 6,4 mm, l'iris de couplage 17 présentant une ouverture rectangulaire une épaisseur de 2 mm, une largeur de 1 mm et une longueur variable. La courbe qui est portée sur cette figure 4The graph of FIG. 4 shows the intercavity coupling values of a structure of the type illustrated in FIG. 3, in the case of a metal cavity 11 39.7 mm in diameter having four dielectric inserts 14a to 14d constituted by sapphire pellets with a thickness of 1.92 mm, the inserts 14a (resp. 14c) and 14b (resp. 14d) being separated by a height of 12.8 mm, the height of separation between the dielectric pads and the metal end walls 13a, 13b of the cavity 11 or the coupling iris 17 disposed inside the cavity 11 being 6.4 mm, the coupling iris 17 having a rectangular opening a 2 mm thick, 1 mm wide and variable length. The curve which is shown in this figure 4
(points symbolisés par des Δ) est une courbe théorique calculée par simulation. On a également porté sur cette figure 4 plusieurs points de mesure (points symbolisés par des o) obtenus expérimentalement. On constate sur cette figure 4 que les résultats expérimentaux sont en accord avec les résultats simulés et que les valeurs de couplage obtenues sont similaires à celles habituellement rencontrées pour des filtres multi odes . On comprend à la lecture des figures 2 et 4 qu'il est possible, en jouant sur la longueur de l'ouverture de l'iris, de moduler le couplage obtenu en fonction du filtrage souhaité.(points symbolized by Δ) is a theoretical curve calculated by simulation. Several measurement points (points symbolized by o) have also been shown in this figure 4 obtained experimentally. It can be seen in this FIG. 4 that the experimental results are in agreement with the simulated results and that the coupling values obtained are similar to those usually encountered for multi-ode filters. It is understood from reading Figures 2 and 4 that it is possible, by playing over the length of the iris opening, to modulate the coupling obtained as a function of the desired filtering.
Cette variation n'entraîne pas de couplage des modes des inserts diélectriques et l'environnement
électromagnétique des inserts n'est pas modifié.This variation does not entail coupling of the modes of the dielectric inserts and the environment. electromagnetic of the inserts is not modified.
Les dispositifs de filtrage qui viennent d'être décrits présentent des valeurs de couplage classiques pour ce type de dispositif et satisfont aux contraintes d'isolation habituelles.
The filtering devices which have just been described have conventional coupling values for this type of device and satisfy the usual insulation constraints.
Claims
1. Dispositif de filtrage comportant une cavité métallique (1, 11) fermée par deux parois d'extrémité (3a, 3b ; 13a, 13b) s 'étendant transversalement par rapport à l'axe de ladite cavité (1, 11), ainsi qu'au moins deux inserts diélectriques (4a, 4b ; 14a à 14d) définissant un résonateur (5, 15a, 15b) dans ladite cavité, caractérisé en ce qu'il comporte au moins un iris de couplage (7a, 7b ; 17) qui s'étend également transversalement par rapport audit axe .1. Filtering device comprising a metal cavity (1, 11) closed by two end walls (3a, 3b; 13a, 13b) extending transversely relative to the axis of said cavity (1, 11), thus that at least two dielectric inserts (4a, 4b; 14a to 14d) defining a resonator (5, 15a, 15b) in said cavity, characterized in that it comprises at least one coupling iris (7a, 7b; 17) which also extends transversely to said axis.
2. Dispositif selon la revendication 1, caractérisé en ce qu'il comporte deux iris de couplage (7a, 7b) répartis respectivement sur l'une et l'autre des deux parois (3a, 3b) d'extrémité et qui réalisent le couplage de ladite cavité (1) avec des guides d'ondes métalliques (6a, 6b) superposés auxdites parois d'extrémité (3a, 3b).2. Device according to claim 1, characterized in that it comprises two coupling irises (7a, 7b) distributed respectively on one and the other of the two end walls (3a, 3b) and which carry out the coupling of said cavity (1) with metal waveguides (6a, 6b) superimposed on said end walls (3a, 3b).
3. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il comporte un iris (17) de couplage s 'étendant transversalement entre deux résonateurs (15a, 15b) définis chacun entre deux inserts diélectriques (14a à 14d).3. Device according to one of the preceding claims, characterized in that it comprises a coupling iris (17) extending transversely between two resonators (15a, 15b) each defined between two dielectric inserts (14a to 14d).
4. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le ou les iris de couplage (7a, 7b ; 17) sont situés au droit de l'axe de la cavité . 4. Device according to one of the preceding claims, characterized in that the coupling iris (7a, 7b; 17) are located at the right of the axis of the cavity.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9613441 | 1996-11-05 | ||
| FR9613441A FR2755544B1 (en) | 1996-11-05 | 1996-11-05 | METAL CAVITY FILTERING DEVICE WITH DIELECTRIC INSERTS |
| PCT/FR1997/001962 WO1998020576A1 (en) | 1996-11-05 | 1997-11-03 | Filtering device with metal cavity provided with dielectric inserts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0937310A1 true EP0937310A1 (en) | 1999-08-25 |
Family
ID=9497317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97913235A Ceased EP0937310A1 (en) | 1996-11-05 | 1997-11-03 | Filtering device with metal cavity provided with dielectric inserts |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6211752B1 (en) |
| EP (1) | EP0937310A1 (en) |
| CA (1) | CA2271074A1 (en) |
| FR (1) | FR2755544B1 (en) |
| WO (1) | WO1998020576A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2803693B1 (en) * | 2000-01-12 | 2003-06-20 | Cit Alcatel | RESONATOR, PARTICULARLY FOR THREE-FREQUENCY WIRE, AND FILTER COMPRISING SAME |
| FR2832860B1 (en) * | 2001-11-26 | 2006-03-03 | Cit Alcatel | WAVEGUIDE WAVEGUIDE MODIFIED HYPERFREQUENCY FILTER WITHOUT ADJUSTMENT AND POSSESSING TRANSMISSION ZEROS |
| US7457640B2 (en) * | 2004-10-29 | 2008-11-25 | Antone Wireless Corporation | Dielectric loaded cavity filters for non-actively cooled applications in proximity to the antenna |
| US7738853B2 (en) * | 2004-10-29 | 2010-06-15 | Antone Wireless Corporation | Low noise figure radiofrequency device |
| US9077062B2 (en) | 2012-03-02 | 2015-07-07 | Lockheed Martin Corporation | System and method for providing an interchangeable dielectric filter within a waveguide |
| CN102707155B (en) * | 2012-06-04 | 2014-07-16 | 电子科技大学 | Test device for complex dielectric constant of dielectric material based on quasi-optical resonant cavity |
| WO2018150170A1 (en) * | 2017-02-15 | 2018-08-23 | Isotek Microwave Limited | A microwave resonator |
| WO2019076456A1 (en) * | 2017-10-18 | 2019-04-25 | Telefonaktiebolaget Lm Ericsson (Publ) | A filter arrangement |
| EP3955377B1 (en) * | 2020-08-12 | 2022-11-09 | Bruker BioSpin GmbH | Microwave coupling device for iris apertures, comprising a plurality of conductor loops |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3028565A (en) * | 1958-09-05 | 1962-04-03 | Atomic Energy Authority Uk | Microwave propagating structures |
| US4721933A (en) * | 1986-09-02 | 1988-01-26 | Hughes Aircraft Company | Dual mode waveguide filter employing coupling element for asymmetric response |
| US5083102A (en) | 1988-05-26 | 1992-01-21 | University Of Maryland | Dual mode dielectric resonator filters without iris |
| IT1223708B (en) * | 1988-07-21 | 1990-09-29 | Cselt Centro Studi Lab Telecom | DIELECTRICALLY CHARGED CAVITY RESONATOR |
| IT1266852B1 (en) * | 1994-06-08 | 1997-01-21 | Cselt Centro Studi Lab Telecom | BIMODAL CAVITY FOR BANDWAVE FILTERS IN WAVE GUIDE. |
| CA2206966C (en) * | 1997-06-03 | 1999-08-03 | Com Dev Limited | Circular waveguide cavity and filter having an iris with an eccentric circular aperture and a method of construction thereof |
-
1996
- 1996-11-05 FR FR9613441A patent/FR2755544B1/en not_active Expired - Fee Related
-
1997
- 1997-11-03 US US09/297,665 patent/US6211752B1/en not_active Expired - Fee Related
- 1997-11-03 EP EP97913235A patent/EP0937310A1/en not_active Ceased
- 1997-11-03 WO PCT/FR1997/001962 patent/WO1998020576A1/en not_active Application Discontinuation
- 1997-11-03 CA CA002271074A patent/CA2271074A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9820576A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1998020576A1 (en) | 1998-05-14 |
| CA2271074A1 (en) | 1998-05-14 |
| FR2755544B1 (en) | 1999-01-22 |
| US6211752B1 (en) | 2001-04-03 |
| FR2755544A1 (en) | 1998-05-07 |
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