Thales

Centre National De La Recherche Scientifique

Centre National Detudes Spatiales

Alcatel

Inria Institut National De Recherche En Informatique Et En Automatique

Centre National De La Recherche Scientifique-cnrs

Serge Verdeyme

Damien Pacaud

Olivier Tantot

Nicolas Delhote

Stephane Bila

Aurelien Perigaud

Laetitia Estagerie

Stéphane Bila

Hussein Ezzeddine

Pierre Guillon

Marc-Yves Lienhart

Nicolas Jolly

Michel Campovecchio

Lëtitia Estagerie

Jérôme Puech

Fabien Seyfert

Pierre Mazet

Etienne Laplanche

Aurélien Perigaud

Sandra Gendraud

Ludovic Carpentier

Sebastien Bonnet

Alain Dravet

Sébastien Bonnet

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.

Tunable microwave system

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&#xb0; 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 +/&#x2212;30%.

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

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&#xb0; 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&#xb0; to within 20&#xb0;.

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

The printed circuit with a multi-layer structure comprises: a first layer machined to form a spotface passing through the layer, a second layer comprising a first cavity passing through the layer, a third layer comprising, on one face, an electronic component that is in the first cavity, a fourth layer comprising a second cavity, a heat-conducting element with two parts: one made of metal, called a thermal cover, inserted into the spotface of the first layer so as to close, mechanically and electrically, the first cavity, the other made of a dielectric material with heat conduction &#x3e;30 W/(m&#xb7;K), placed in the first cavity so as to be in contact with the electronic component.

Cooled printed circuit with multi-layer structure and low dielectric losses

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, characterized in that it includes at least two filters (), each filter comprising at least two coupled resonators, at least one resonator (Rs, Rs) 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.

Compact multi-port router device

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.

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

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.

Frequency-tunable microwave-frequency wave filter with a dielectric resonator including at least one element that rotates

A filter device including a metal cavity (,) closed by two end walls (,) extending transversely relative to the axis of said cavity (,) and at least two dielectric inserts (,to,) defining a resonator (,) in said cavity, characterized in that it includes at least one coupling iris (,) which also extends transversely relative to said axis.

Filtering device with metal cavity provided with dielectric inserts

Growing community of inventors

Limoges, France

Serge Verdeyme