Abstract: The present invention relates to a device for transmitting a signal between a waveguide and a printed circuit board, the device comprising a first access means and a second access means for the signal to be transmitted, a conductor track forming the first access means, a printed circuit board comprising a substrate, and a transition element. The element comprises an upper ground plane and a lower ground plane that is intended to be in direct contact with the waveguide, the lower ground plane comprising a slot forming the second access means of the transmission device, one of the upper ground plane and the lower ground plane being connected to the conductor track.

Abstract: The present invention relates to a device for transmitting a signal between a waveguide and a printed circuit board, the device comprising a first access means and a second access means for the signal to be transmitted, a conductor track forming the first access means, a printed circuit board comprising a substrate, and a transition element. The element comprises an upper ground plane and a lower ground plane that is intended to be in direct contact with the waveguide, the lower ground plane comprising a slot forming the second access means of the transmission device, one of the upper ground plane and the lower ground plane being connected to the conductor track.

Abstract: The present invention relates to a boron nitride (BN(C)) composite material in the form of a continuous structure, and a phase change material (PCM) included inside said continuous structure of (BN(C)), the method for manufacturing same and the components that comprise same.

Abstract: The present invention relates to the field of rotary joints, or similar devices, more specifically to optical rotary joints. Embodiments of the invention are directed to a multipathway optical rotary joint, comprising a stationary plane, a moving plane rotatable about a reference axis of rotation and a Dove prism, rotatably placed between the stationary plane and the moving plane. The assembly is configured so that when the moving plane rotates at a speed ?, the prism rotates at a speed ?/2. The optical pathways are arranged so as to pass through the prism. The Dove prism includes a central optical channel passing an optical wave without undergoing deviation, the axis of the channel being substantially coaxial with the reference axis of rotation. An optical pathway is furthermore arranged in the joint so as to pass through the joint, following an axis substantially coinciding with the reference axis of rotation.

Abstract: The present invention relates to the field of rotary joints, or similar devices, more specifically to optical rotary joints. Embodiments of the invention are directed to a multipathway optical rotary joint, comprising a stationary plane, a moving plane rotatable about a reference axis of rotation and a Dove prism, rotatably placed between the stationary plane and the moving plane. The assembly is configured so that when the moving plane rotates at a speed ?, the prism rotates at a speed ?/2. The optical pathways are arranged so as to pass through the prism. The Dove prism includes a central optical channel passing an optical wave without undergoing deviation, the axis of the channel being substantially coaxial with the reference axis of rotation. An optical pathway is furthermore arranged in the joint so as to pass through the joint, following an axis substantially coinciding with the reference axis of rotation.

Abstract: A control device for the formation of plural simultaneous radar reception beams in an electronic scanning antenna. The electronic scanning antenna includes an array of detectors of a reception microwave signal arranged in n columns and m rows. The control device makes, in the microwave domain, a first partial combination of the signals received, the first combination being made according to each column. An optical device makes a second partial combination in the optical domain, the optical device including at least n optical sources each producing an optical signal modulated at the frequency of the reception microwave signal by an associated microwave combination signal. The optical signal is divided into r optical signals to obtain nxr optical signals.

Abstract: An optical control device for an electronic scanning antenna having at least two controlled radiating elements, and including means for providing first and second mixed light beams, the first light beam polarized according to a first direction and having a first wavelength (&lgr;1), and the second light beam, polarized according to a second direction and having a second wavelength (&lgr;2); at least two optical delay circuits each receiving the first and second mixed light beams and configured to induce complementary delays compared to a determined time value on the first and second beams; chromatic separators each situated at the output of a corresponding one of the delay circuits and configured to separate the light having the first wavelength (&lgr;1) from the light having the second wavelength (&lgr;2); first photodetectors each coupling a corresponding radiating element to a corresponding chromatic separator; second photodetectors each coupling a corresponding chromatic separator to a corresponding first