Radiofrequency Circuit Embedded Onboard in a Satellite Comprising a Thermal Control System Based on an Alarm Signal Generated by the Reflection of Power

A radiofrequency circuit embedded onboard a satellite, data being transmitted on several channels by radiofrequency signals, includes a channel corresponding to a frequency band, and a succession of gains being able to be associated with a channel so as to generate the radiofrequency signal to be transmitted on the latter. The succession includes at least one variable-gain amplifier, the radiofrequency signals thus generated being multiplexed by a multiplexer composed of bandpass filters. The successions of gains comprise a power load arranged so as to dissipate the power of signals which is reflected by the filters of the multiplexer, said load including means for generating an alarm signal representative of the power level of the reflected signals, the alarm signal being used to control the gain of the variable-gain amplifier. The subject of the invention is also a power load. 1- A radiofrequency circuit configured to be embedded onboard a satellite , data being transmitted on several channels by radiofrequency signals , a channel corresponding to a frequency band , a succession of gains being able to be associated with a channel so as to generate the radiofrequency signal to be transmitted on the latter , said succession comprising at least one variable-gain amplifier , the radiofrequency signals thus generated being multiplexed by a multiplexer composed of bandpass filters , wherein the successions of gains comprise a power load arranged so as to dissipate the power of signals which is reflected by the filters of the multiplexer , said load comprising means for generating an alarm signal representative of the power level of the reflected signals , said alarm signal being used to control the gain of the variable-gain amplifier.2- The circuit according to claim 1 , wherein control modules associated with the successions of gains comprise means for determining control setpoints for the variable-gain amplifier of said successions claim 1 , said setpoints being ...

FREQUENCY-TUNABLE BAND-PASS FILTER FOR MICROWAVE

A band-pass filter for microwave is provided that can be frequency-tuned the filter comprising an input resonator comprising a metal input cavity and an input dielectric element, an output resonator comprising a metal output cavity and an output dielectric element, an input excitation means (S) of elongate shape, an output excitation means of elongate shape, the input resonator and the output resonator being coupled, characterized in that the input dielectric element and the output dielectric element have a recess, the input excitation means penetrates the recess of the input dielectric element the output excitation means penetrates the recess of the output dielectric element, the input dielectric element is capable of carrying out a rotation about an input rotation axis, the rotations of the dielectric elements allowing the modification of the central frequency of the filter. 1. A band-pass filter for microwave that can be frequency-tuned and has a central frequency (fc) , the microwave being propagated on an axis Z , the filter comprising:an input resonator comprising a metal input cavity and an input dielectric element, placed inside the input cavity and capable of disrupting the resonance mode of the microwave in the input cavity,an output resonator comprising a metal output cavity and an output dielectric element, placed inside the output cavity and capable of disrupting the resonance mode of the microwave in the output cavity,an input excitation means of elongate shape on the axis Z penetrating the input cavity in order to allow the microwave to penetrate the input cavity,an output excitation means of elongate shape on the axis Z penetrating the output cavity in order to allow the microwave to exit the output cavity,the input resonator and the output resonator being coupled,wherein the input dielectric element and the output dielectric element have a recess,wherein the input excitation means penetrates the recess of the input dielectric element so that the ...

Compact Multi-Port Router Device

The invention relates to a multi port router device capable of carrying a number P, which is greater than or equal to three, of frequency channels, from a number M of input ports to a number N of output ports, at least one of the two numbers M and N being greater than or equal to two, characterised in that it includes at least two filters ( 12, 14, 16, 18 ), each filter comprising at least two coupled resonators, at least one resonator (Rs 1 , Rs 2 ) being common to two different filters, and each input port and each output port being connected directly to at least one resonator. The router device is capable of appropriately performing routing in which it is possible to supply on at least one output port an output multiplex having at least a first and a second frequency channel, among which: the first frequency channel has originated from a first input multiplex, supplied on a first input port and comprising said first frequency channel, and at least one further frequency channel forwarded to a second output port of the device; and the second frequency channel is either forwarded from a second input port, or, when the first input multiplex comprises at least three different multiplexed frequency channels, the second frequency channel originates from the first input multiplex, the first second frequency channels, being frequentially disposed on both sides of a third frequency channel, with the said third frequency channel being routed to a different output port.

FREQUENCY-TUNABLE FILTER WITH DIELECTRIC RESONATOR

A frequency-tunable microwave-frequency wave filter with dielectric resonator, comprises a metallic cavity and at least one stack along a rotation axis, the resonator-forming stack being disposed inside the cavity and comprising at least a first and a second element each made of dielectric material, the second element being mobile in rotation with respect to the first element around the rotation axis and exhibiting a first position and at least one second position separated by an angle of rotation, and the elements exhibiting shapes such that the overall geometry of the stack is different in the at least two positions, the stack forming a first resonator adapted so that the filter exhibits a first central frequency when the second element is in the first position, and forming a second resonator adapted so that the filter exhibits a second central frequency when the second element is in the second position. 1. A frequency-tunable microwave-frequency wave filter with dielectric resonator , comprising a metallic cavity and at least one stack along a rotation axis , said resonator-forming stack being disposed inside the said cavity and comprising at least one first element made of dielectric material and at least one second element made of dielectric material ,the second element being mobile in rotation with respect to the said first element around the said rotation axis and exhibiting a first position and at least one second position separated by an angle of rotation, andthe elements exhibiting shapes such that the overall geometry of the said stack is different in the said at least two positions, andthe stack forming a first resonator adapted so that the said filter exhibits a first central frequency when the said second element is in the said first position, and forming a second resonator adapted so that the said filter exhibits a second central frequency when the said second element is in the said second position.2. The filter according to claim 1 , further ...

TUNABLE MICROWAVE SYSTEM

A tunable microwave system includes at least two elements, each element being chosen from a propagating guide, an evanescent guide, a resonator, and at least one coupling device arranged between the two elements and configured to couple the two elements to each other, the coupling device having a holder having an aperture and having at least one elongate element the shape of which is elongate in a polarization direction contained in a plane of the aperture, the elongate element being securely fastened to the perimeter of the aperture at at least one end, the coupling device being configured to be rotatable about an axis substantially perpendicular to the plane of the aperture so as to modify a value of the polarization direction and so that the coupling between the two elements is dependent on the value of the polarization direction. 1121212ii. A tunable microwave system comprising at least two elements , each element being chosen from a propagating guide (GPE , GPS , GP , GP) , an evanescent guide (EG , EG) , a resonator (Res , Res , Resi , Res) , and at least one coupling device (CD) arranged between the two elements and configured to couple the two elements to each other ,{'b': 1', '2, 'i': i', 'i, 'said coupling device (CD, CDi, CDE, CDS, CDL, CDL, CDij) comprising a holder (Sp) having an aperture (Ap) and comprising at least one elongate element the shape of which is elongate in a direction called the polarization direction (Dp) contained in a plane (P) of the aperture, said elongate element being securely fastened to the perimeter of the aperture at at least one end,'}said coupling device being configured to be rotatable about an axis substantially perpendicular to said plane of the aperture so as to modify a value of the polarization direction (Dp) and so that the coupling between the two elements is dependent on said value of the polarization direction.2. The system as claimed in claim 1 , wherein the coupling device (CD) comprises a plurality of elongate ...

Bandpass microwave filter tunable by rotation of a dielectric element

A frequency tunable microwave bandpass filter comprises a resonator, including: a cavity with conducting wall substantially cylindrical with axis Z having height H, and partially closed at both ends; and a dielectric element inside the cavity. The resonator resonates at two perpendicular polarizations having distributions of electromagnetic field in the cavity deduced from each other by 90° rotation. The element rotates about an axis substantially perpendicular to axis Z, between a first and second position. The element comprises a first end wherein: in a first position the element is disposed substantially in a plane perpendicular to axis Z and the centre of the first end is disposed at a height in the cavity corresponding substantially to an electric field minimum; and in a second position the element is substantially parallel to Z and the first end is disposed in a plane corresponding to an electric field maximum within ±30%.

BANDPASS MICROWAVE FILTER TUNABLE BY RELATIVE ROTATION OF AN INSERT SECTION AND OF A DIELECTRIC ELEMENT

A bandpass filter for microwave-frequency wave which is frequency tunable, comprises at least one resonator. Each resonator comprises a cavity having a conducting wall substantially cylindrical in relation to an axis Z, and at least one dielectric element disposed inside the cavity. The resonator resonates on two perpendicular polarizations having respectively distributions of the electromagnetic field in the cavity that are deduced from one another by a rotation of 90° and according to one and the same frequency. The wall of the cavity comprises an insert section facing the element having a different shape from a section not situated facing the element. The insert section and the element are able to perform a rotation with respect to one another in relation to the axis Z so as to define at least a first and a second relative position differing by an angle substantially equal to 45° to within 20°. 1. A bandpass filter for microwave-frequency wave , frequency tunable , comprising at least one resonator ,each resonator comprising a cavity having a conducting wall substantially cylindrical in relation to an axis Z, and at least one dielectric element disposed inside the cavity,said resonator resonating on two perpendicular polarizations having respectively distributions of the electromagnetic field in the cavity that are deduced from one another by a rotation of 90°,the wall of the cavity comprising an insert section facing said element having a different shape from a section not situated facing the element,the insert section and the element being able to perform a rotation with respect to one another in relation to the axis Z so as to define at least a first and a second relative position differing by an angle substantially equal to 45° to within 20°.2. The filter according to claim 1 , in which at least one shape from among the shape of the insert section and the shape of the element comprises at least two orthogonal symmetry planes cutting one another along the axis ...

RADIOFREQUENCY FILTER WITH DIELECTRIC ELEMENT

A radiofrequency filter exhibiting at least one resonant mode comprises: at least one cavity at least partially closed using conductive walls, having a cylindrical outer surface defined by a directing curve described by a generatrix and having a point of symmetry, an axis passing through a point of symmetry and parallel to the generatrix being a longitudinal axis of the cavity. At least one dielectric element is arranged in the cavity and comprises: a first portion having a thickness according to the longitudinal axis and a section according to a plane perpendicular to the longitudinal axis whose vertices are distributed according to a polygon, at least two vertices being short-circuited between them by the conductive walls of the cavity, via an electrical or radiofrequency contact between the vertices and walls, at least one pyramidal portion comprising an apex and a base coinciding with an extreme section of the first portion. 1. A radiofrequency filter exhibiting at least one resonant mode , comprising:at least one cavity at least partially closed using conductive walls, andhaving a cylindrical outer surface defined by a directing curve described by a generatrix and having a point of symmetry, an axis passing through a point of symmetry and parallel to said generatrix being a longitudinal axis of said cavity, andat least one dielectric element arranged in said cavity and comprising:a first portion having a thickness according to said longitudinal axis and a section according to a plane perpendicular to said longitudinal axis whose vertices are distributed according to a polygon, and of which at least two vertices are short-circuited between them by said conductive walls of said cavity, via an electrical or radiofrequency contact between said vertices and said walls,at least one pyramidal portion comprising an apex and a base coinciding with an extreme section of said first portion.2. The filter according to claim 1 , wherein said directing curve is chosen from a ...

FREQUENCY TUNING BAND FILTER FOR MICROWAVE WAVE

Dual frequency multiplexing device for use in repeater, has branch forming access port of access point, and each of set of other branches is connected to access point of one of band pass filters of set of band pass filters

The device (50) has four band pass filters (611-614) that are centered respectively on four frequencies (F1-F4). Each band pass filter is arranged with an access point and another access point. Each access point is connected to an access point of one band pass filter of the four band pass filters. A branch forms an access port of the latter access point, and each of a set of other branches is connected to the latter access point of one of the band pass filters of the set of band pass filters.

ADJUSTABLE ELECTRICAL LENGTH CONNECTABLE FREQUENCY HYPERFREQUENCY FILTERING DEVICE

L'invention concerne un dispositif de filtrage fréquentiel d'onde hyperfréquence accordable en fréquence comprenant au moins un filtre (11, 41) fréquentiel connecté à au moins un guide d'onde, dit guide d'onde (13, 14, 43, 44, 45) de liaison, caractérisé en ce qu'il comporte au moins un dispositif (21, 24, 30, 31, 51, 54, 60, 61) d'ajustement de la longueur électrique équivalente d'au moins une portion d'au moins un guide d'onde (13, 14, 43, 44, 45) de liaison en fonction de l'accord en fréquence du dispositif de filtrage fréquentiel. Elle s'étend à un émetteur comprenant au moins un tel dispositif, et à un réseau de communication et à un système spatial comprenant au moins un tel émetteur.

TUNABLE MICROWAVE SYSTEM

L'invention concerne un système hyperfréquence accordable (10) comprenant au moins deux éléments, chaque élément étant choisi parmi un guide propageant, un guide évanescent, un résonateur (Res1 , Res2, Resi, Res), et au moins un dispositif de couplage (CD, CDi, CDE, CDS, CDL1i, CDL2i, CDij)) disposé entre les deux éléments et configuré pour coupler les deux éléments entre eux, ledit dispositif de couplage comprenant un support (Sp) présentant une ouverture (Ap) et comprenant au moins un élément de forme allongée (40) selon une direction dénommée direction de polarisation (Dp) comprise dans un plan de l'ouverture (P), le dit élément de forme allongée (40) étant solidaire du pourtour (30) de l'ouverture selon au moins une extrémité, ledit dispositif de couplage étant configuré pour être mobile en rotation autour d'un axe sensiblement perpendiculaire audit plan de l'ouverture de manière à modifier une valeur de la direction de polarisation (Dp) et de sorte que le couplage entre les deux éléments soit fonction de ladite valeur de la direction de polarisation. The invention relates to a tunable microwave system (10) comprising at least two elements, each element being chosen from among a propagating guide, an evanescent guide, a resonator (Res1, Res2, Resi, Res), and at least one coupling device ( CD, CDi, CDE, CDS, CDL1i, CDL2i, CDij)) disposed between the two elements and configured to couple the two elements together, said coupling device comprising a support (Sp) having an opening (Ap) and comprising at least an elongated element (40) along a direction called the direction of polarization (Dp) included in a plane of the opening (P), said elongated element (40) being integral with the periphery (30) of the opening along at least one end, said coupling device being configured to be rotatable about an axis substantially perpendicular to said plane of the opening so as to modify a value of the direction of polarization (Dp) and so that the coupling ...

RESONANT CAVITY DEVICE WITH TRANSVERSE DIMENSIONAL VARIATION CONVERSION, INDUCED BY A TEMPERATURE VARIATION, IN LONGITUDINAL DIMENSIONAL VARIATION

DIELECTRIC RESONATOR HYPERFREQUENCY FILTER

Le filtre d'axe longitudinal Z comporte : - au moins une cavité résonante (11) délimitée par des parois (10, 14, 15) constituées d'un matériau ayant un coefficient de dilatation non nul, - un résonateur diélectrique (16) monté dans la cavité (11) transversalement à l'axe Z, - un dispositif de compensation mécanique d'au moins une fréquence de résonance de la cavité en fonction de la température, le dispositif de compensation comportant : au moins un doigt mobile en rotation (20a) par mode et par cavité, le doigt mobile pénétrant à une profondeur fixe dans la cavité (11), - et un actionneur mécanique externe (48a) monté parallèlement à l'axe Z et couplé mécaniquement au doigt mobile (20a), l'actionneur mécanique externe (48a) étant réalisé dans un matériau ayant un coefficient de dilatation thermique au moins cinq fois plus faible que celui des parois du filtre

TUNABLE FILTER IN DIELECTRIC RESONATOR FREQUENCY

L'invention concerne un filtre pour onde hyperfréquence accordable en fréquence à résonateur diélectrique, comprenant une cavité métallique (103) et au moins un empilement (100) selon un axe de rotation (x), l'empilement formant résonateur étant disposé à l'intérieur de la cavité (103) et comprenant au moins un premier élément (101) en matériau diélectrique et au moins un deuxième élément (102) en matériau diélectrique, le deuxième élément (102) étant mobile en rotation par rapport audit premier élément (101) autour de l'axe de rotation (x) et présentant une première position (p1) et au moins une deuxième position (p2) séparées d'un angle de rotation (teta), et les éléments présentant des formes telles que la géométrie globale de l'empilement (100) est différente dans les au moins deux positions (p1, p2), l'empilement (100) formant un premier résonateur (R1) adapté pour que ledit filtre présente une première fréquence centrale lorsque le deuxième élément est dans ladite première position (p1), et formant un deuxième résonateur (R2) adapté pour que le filtre présente une deuxième fréquence centrale lorsque le deuxième élément est dans la deuxième position (p2). The invention relates to a dielectric resonator frequency tunable microwave frequency filter comprising a metal cavity (103) and at least one stack (100) along an axis of rotation (x), the resonator stack being arranged at the interior of the cavity (103) and comprising at least a first element (101) of dielectric material and at least a second element (102) of dielectric material, the second element (102) being rotatable relative to said first element (101) ) about the axis of rotation (x) and having a first position (p1) and at least a second position (p2) separated by a rotation angle (teta), and the elements having shapes such as the overall geometry of the stack (100) is different in the at least two positions (p1, p2), the stack (100) forming a first resonator (R1) adapted so ...

DIELECTRIC RESONATOR HYPERFREQUENCY FILTER

Frequency tunable bandpass filter for hyperfrequency waves

HYPERFREQUENCY FILTER PASSES A TUNABLE BAND BY ROTATING A DIELECTRIC ELEMENT

L'invention concerne un filtre passe bande (100) pour onde hyperfréquence, accordable en fréquence, comprenant au moins un résonateur (R), -chaque résonateur comprenant : *une cavité (20) présentant une paroi conductrice (21) sensiblement cylindrique selon un axe Z présentant une hauteur H, une position z selon l'axe Z étant repérée par une abscisse z comprise entre 0 et H, et étant au moins partiellement fermée aux deux extrémités et, *au moins un élément diélectrique (40) disposé à l'intérieur de la cavité, -ledit résonateur résonant selon un mode pour lequel deux polarisations perpendiculaires (Px, Py) présentent respectivement des répartitions du champ électromagnétique dans la cavité se déduisant l'une de l'autre par une rotation de 90°, caractérisé en ce qu'il comprend : -des moyens de rotation adaptés pour mettre en rotation ledit élément selon un axe R sensiblement perpendiculaire à l'axe Z, entre au moins une première (P1) et une deuxième (P2) positions, -ledit élément comprenant au moins une première extrémité (E1) de sorte que : * dans une première position ledit élément est sensiblement disposé dans un plan perpendiculaire à l'axe Z et le centre de ladite première extrémité (E1) est disposé à une hauteur dans la cavité correspondant sensiblement à un minima du champ électrique, * dans une deuxième position (P2) ledit élément est sensiblement parallèle à Z et ladite première extrémité (E1) est disposée dans un plan correspondant à un maxima de champ électrique à +/- 30% près. The invention relates to a frequency tunable microwave bandpass filter (100) comprising at least one resonator (R), each resonator comprising: a cavity (20) having a substantially cylindrical conducting wall (21) according to a Z axis having a height H, a position Z along the Z axis being marked by an abscissa z between 0 and H, and being at least partially closed at both ends and at least one dielectric element (40) disposed at cavity interior, said ...

Radiofrequency filter with dielectric element

The invention relates to a radiofrequency filter (10) exhibiting at least one resonant mode comprising: - at least one cavity (11) at least partially closed using conductive walls (12) and, - having a cylindrical outer surface defined by a directing curve (C) described by a generatrix and having a point of symmetry (Sy), an axis passing through a point of symmetry and parallel to said generatrix being called longitudinal axis (z) of said cavity (11) and, - at least one dielectric element (13) arranged in said cavity and comprising: - a first portion (131) having a thickness (e) according to said longitudinal axis (z) and a section according to a plane perpendicular to said longitudinal axis (z) whose vertices (s1, s2, s3, s4) are distributed according to a polygon, and of which at least two vertices are short-circuited between them by said conductive walls (12) of said cavity, via an electrical or radiofrequency contact between said vertices and said walls, - at least one pyramidal portion (132, 133) comprising an apex (Asup) and a base coinciding with an extreme section of said first portion (131).

Microwave filter with a dielectric resonator

Le filtre d'axe longitudinal Z comporte : - au moins une cavité résonante (11) délimitée par des parois (10, 14, 15) constituées d'un matériau ayant un coefficient de dilatation non nul, - un résonateur diélectrique (16) monté dans la cavité (11) transversalement à l'axe Z, - un dispositif de compensation mécanique d'au moins une fréquence de résonance de la cavité en fonction de la température, le dispositif de compensation comportant : - au moins un doigt mobile en rotation (20a) par mode et par cavité, le doigt mobile pénétrant à une profondeur fixe dans la cavité (11) par l'intermédiaire d'une liaison pivot (5), - et un actionneur mécanique externe (48a) monté parallèlement à l'axe Z et couplé mécaniquement au doigt mobile (20a), l'actionneur mécanique externe (48a) étant réalisé dans un matériau ayant un coefficient de dilatation thermique au moins cinq fois plus faible que celui des parois du filtre The longitudinal axis Z filter comprises: - at least one resonant cavity (11) delimited by walls (10, 14, 15) made of a material having a non-zero coefficient of expansion, - a dielectric resonator (16) mounted in the cavity (11) transversely to the Z axis, - a device for mechanical compensation of at least one resonant frequency of the cavity as a function of the temperature, the compensation device comprising: - at least one finger movable in rotation (20a) per mode and per cavity, the movable finger penetrating at a fixed depth into the cavity (11) via a pivot connection (5), - and an external mechanical actuator (48a) mounted parallel to the Z axis and mechanically coupled to the movable finger (20a), the external mechanical actuator (48a) being made of a material having a coefficient of thermal expansion at least five times lower than that of the walls of the filter

Frequency tunable bandpass filter for hyperfrequency waves

L'invention concerne un filtre passe bande (100) pour onde hyperfréquence accordable en fréquence et présentant une fréquence centrale, l'onde hyperfréquence se propageant selon un axe Z, le filtre comprenant un résonateur d'entrée comprenant une cavité d'entrée (C1) métallique et un élément diélectrique d'entrée (E1), disposé à l'intérieur de la cavité d'entrée et apte à perturber le mode de résonance de l'onde hyperfréquence dans la cavité d'entrée, un résonateur de sortie comprenant une cavité de sortie (CN) métallique et un élément diélectrique de sortie (EN), disposé à l'intérieur de la cavité de sortie, et apte à perturber le mode de résonance de l'onde hyperfréquence dans la cavité de sortie, un moyen d'excitation d'entrée (S1) de forme allongée pénétrant dans la cavité d'entrée (C1) pour permettre à l'onde hyper fréquence de pénétrer dans la cavité d'entrée, un moyen d'excitation de sortie (SN) de forme allongée pénétrant dans la cavité de sortie (CN) pour permettre à l'onde hyper fréquence de sortir de la cavité de sortie, les résonateurs d'entré et de sortie étant couplés, caractérisé en ce que les éléments diélectriques d'entrée (E1) et de sortie (EN) présentent un évidement (41,42), le moyen d'excitation d'entrée (S1) pénètre à l'intérieur de l'évidement (41) de l'élément diélectrique d'entrée (E1) de manière à ce que l'élément diélectrique d'entrée (E1) perturbe le champ électromagnétique à proximité du moyen d'excitation d'entrée (S1), le moyen d'excitation de sortie (SN) pénètre à l'intérieur de l'évidement (42) de l'élément diélectrique de sortie (EN) de manière à ce que l'élément diélectrique de sortie (EN) perturbe le champ électromagnétique à proximité du moyen d'excitation de sortie (SN), l'élément diélectrique d'entrée (E1) est apte à effectuer une rotation autour d'un axe de rotation d' ...

HYPERFREQUENCY FILTER BAND TUNABLE BY RELATIVE ROTATION OF AN INSERT SECTION AND A DIELECTRIC ELEMENT

L'invention concerne un filtre passe bande pour onde hyperfréquence accordable en fréquence, comprenant au moins un résonateur ®, -chaque résonateur comprenant une cavité (30) présentant une paroi conductrice (50) sensiblement cylindrique le long d'un axe Z, et au moins un élément diélectrique disposé à l'intérieur de la cavité, -ledit résonateur résonant sur deux polarisations perpendiculaires présentant respectivement des répartitions du champ électromagnétique dans la cavité se déduisant l'une de l'autre par une rotation de 90° et selon une même fréquence, -la paroi de la cavité (50) comprenant une section d'insert (20) en regard dudit élément présentant une forme différente d'une section non située en regard de l'élément, -la section d'insert (20) et l'élément étant aptes à effectuer une rotation l'un par rapport à l'autre selon l'axe Z de manière à définir au moins une première (P1) et une deuxième positions relatives différant d'un angle sensiblement égal à 45° à 20° près. The invention relates to a bandpass filter for a frequency-tunable microwave frequency, comprising at least one resonator ®, each resonator comprising a cavity (30) having a substantially cylindrical conducting wall (50) along an axis Z, and to least one dielectric element disposed inside the cavity, -said resonator resonant on two perpendicular polarizations respectively having distributions of the electromagnetic field in the cavity being deduced from each other by a rotation of 90 ° and according to the same frequency, -the wall of the cavity (50) comprising an insert section (20) opposite said element having a shape different from a non-facing section of the element, -the insert section (20) and the element being able to rotate relative to each other along the axis Z so as to define at least a first (P1) and a second relative positions differing from an angle e substantially equal to 45 ° to 20 °.

Band-pass filter that can be frequency tuned including a dielectric element capable of carrying out a rotation

A band-pass filter for microwave is provided that can be frequency-tuned the filter comprising an input resonator comprising a metal input cavity and an input dielectric element, an output resonator comprising a metal output cavity and an output dielectric element, an input excitation means (S 1 ) of elongate shape, an output excitation means of elongate shape, the input resonator and the output resonator being coupled, characterized in that the input dielectric element and the output dielectric element have a recess, the input excitation means penetrates the recess of the input dielectric element the output excitation means penetrates the recess of the output dielectric element, the input dielectric element is capable of carrying out a rotation about an input rotation axis, the rotations of the dielectric elements allowing the modification of the central frequency of the filter.

Tunable microwave system

The invention relates to a tunable microwave system (10) comprising at least two elements, every element being selected from among a propagation guide, an evanescent guide, a resonator (Res1, Res2, Resi, Res) and at least one coupling device (CD, CDi, CDE, CDS, CDL1i, CDL2i, CDij)) disposed between the two elements and designed to interconnect said two elements, the coupling device comprising a support (Sp) having an opening (Ap) and further comprising at least one element (40) which is elongated in a direction called polarization direction (Dp) extending in an opening plane (P), said elongated element (40) being secured to the periphery (30) of the opening along at least one end, the coupling device further being configured to be rotatable about an axis that is substantially perpendicular to the opening plane in such a way as to modify a value of the direction of polarization (Dp) and in such a way that the coupling between the two elements is dependent on the value of the direction of polarization.

Microwave filter with a dielectric resonator

Le filtre d'axe longitudinal Z comporte : - au moins une cavité résonante (11) délimitée par des parois (10, 14, 15) constituées d'un matériau ayant un coefficient de dilatation non nul, - un résonateur diélectrique (16) monté dans la cavité (11) transversalement à l'axe Z, - un dispositif de compensation mécanique d'au moins une fréquence de résonance de la cavité en fonction de la température, le dispositif de compensation comportant : - au moins un doigt mobile en rotation (20a) par mode et par cavité, le doigt mobile pénétrant à une profondeur fixe dans la cavité (11) par l'intermédiaire d'une liaison pivot (5), - et un actionneur mécanique externe (48a) monté parallèlement à l'axe Z et couplé mécaniquement au doigt mobile (20a), l'actionneur mécanique externe (48a) étant réalisé dans un matériau ayant un coefficient de dilatation thermique au moins cinq fois plus faible que celui des parois du filtre

Bandpass microwave filter tunable by rotation of a dielectric element

The invention relates to a bandpass filter (100) for microwave-frequency wave, frequency tunable, comprising at least one resonator (R), -each resonator comprising: *a cavity (20) having a conducting wall (21) substantially cylindrical in relation to an axis Z having a height H, a position z along the axis Z being labelled by an abscissa z lying between 0 and H, and being at least partially closed at both ends and, *at least one dielectric element (40) disposed inside the cavity, -the said resonator resonating according to a mode for which two perpendicular polarizations (Px, Py) respectively have distributions of the electromagnetic field in the cavity that are deduced from one another by a rotation of 90°, characterized in that it comprises: -means of rotation adapted for setting the said element into rotation in relation to an axis R substantially perpendicular to the axis Z, between at least a first (P1) and a second (P2) position, -the said element comprising at least one first end (E1) such that: * in a first position the said element is disposed substantially in a plane perpendicular to the axis Z and the centre of the said first end (E1 ) is disposed at a height in the cavity corresponding substantially to a minimum of the electric field, * in a second position (P2) the said element is substantially parallel to Z and the said first end (E1) is disposed in a plane corresponding to an electric field maximum to within +/- 30%.

Dispositif routeur multiports compact

L'invention concerne un dispositif routeur multiports adapté à acheminer un nombre P supérieur ou égal à trois de canaux fréquentiels, depuis un nombre M de ports d'entrée vers un nombre N de ports de sortie, au moins un des deux nombres M ou N étant supérieur ou égal à deux, caractérisé en ce qu'il comporte au moins deux filtres (12, 14, 16, 18), chaque filtre comportant au moins deux résonateurs couplés, au moins un résonateur (Rs1 , Rs2) étant commun à deux filtres différents, chaque port d'entrée et chaque port de sortie étant connecté directement à au moins un résonateur. Le dispositif routeur est apte à réaliser un routage dans lequel sur au moins un port de sortie est fourni un multiplexe de sortie comportant au moins un premier et un deuxième canal fréquentiel, parmi lesquels le premier canal fréquentiel est issu d'un premier multiplexe d'entrée fourni sur un premier port d'entrée et comportant ledit premier canal fréquentiel et au moins un autre canal fréquentiel acheminé vers un deuxième port de sortie du dispositif, et le deuxième canal fréquentiel est soit acheminé depuis un deuxième port d'entrée, soit, lorsque ledit premier multiplexe d'entrée comporte au moins trois canaux fréquentiels différents multiplexés, ledit deuxième canal fréquentiel est issu dudit premier multiplexe d'entrée, lesdits premier et deuxième canal fréquentiel étant disposés fréquentiellement de part et d'autre d'un troisième canal fréquentiel, ledit troisième canal fréquentiel étant routé vers un autre port de sortie.

Radiofrequency filter with dielectric element

A radiofrequency filter exhibiting at least one resonant mode comprises: at least one cavity at least partially closed using conductive walls, having a cylindrical outer surface defined by a directing curve described by a generatrix and having a point of symmetry, an axis passing through a point of symmetry and parallel to the generatrix being a longitudinal axis of the cavity. At least one dielectric element is arranged in the cavity and comprises: a first portion having a thickness according to the longitudinal axis and a section according to a plane perpendicular to the longitudinal axis whose vertices are distributed according to a polygon, at least two vertices being short-circuited between them by the conductive walls of the cavity, via an electrical or radiofrequency contact between the vertices and walls, at least one pyramidal portion comprising an apex and a base coinciding with an extreme section of the first portion.

Bandpass microwave filter tunable by relative rotation of an insert section and of a dielectric element

A bandpass filter for microwave-frequency wave which is frequency tunable, comprises at least one resonator. Each resonator comprises a cavity having a conducting wall substantially cylindrical in relation to an axis Z, and at least one dielectric element disposed inside the cavity. The resonator resonates on two perpendicular polarizations having respectively distributions of the electromagnetic field in the cavity that are deduced from one another by a rotation of 90° and according to one and the same frequency. The wall of the cavity comprises an insert section facing the element having a different shape from a section not situated facing the element. The insert section and the element are able to perform a rotation with respect to one another in relation to the axis Z so as to define at least a first and a second relative position differing by an angle substantially equal to 45° to within 20°.

Bandpass microwave filter tunable by a 90 degree rotation of a dielectric element between first and second positions

A frequency tunable microwave bandpass filter comprises a resonator, including: a cavity with conducting wall substantially cylindrical with axis Z having height H, and partially closed at both ends; and a dielectric element inside the cavity. The resonator resonates at two perpendicular polarizations having distributions of electromagnetic field in the cavity deduced from eachother by 90° rotation. The element rotates about an axis substantially perpendicular to axis Z, between a first and second position. The element comprises a first end wherein: in a first position the element is disposed substantially in a plane perpendicular to axis Z and the center of the first end is disposed at a height in the cavity corresponding substantially to an electric field minimum; and in a second position the element is substantially parallel to Z and the first end is disposed in a plane corresponding to an electric field maximum within +/−30%.