Abstract: The present disclosure concerns a group of cannabinoid compounds defined by formulas (I) to (IV), wherein R1 is —H or —COOH, for the first time isolated and fully characterized in structure, absolute stereochemistry by the present applicant. Methods of isolation, characterization, stereoselective synthesis, biological activity, pharmaceutical composition and therapeutic applications of the present compounds as modulators of the cannabinoid CB1 receptor are also object of the disclosure.

Abstract: This invention is related to a high efficiency antenna having compact dimensions, particularly for installation on a vehicle, such as an aircraft or a high velocity train or a motor vehicle, comprising a main circular reflector, an illuminator or feed, centrally mounted with respect to said main reflector, and a sub-reflector, mounted on said illuminator by means of a positioning support member, said antenna being installed upon a positioning member adapted to carry out azimuth and elevation polarisation movements.

Abstract: This invention concerns a system (1) for electronically aligning the polarisation of an antenna (2;2b) with the polarisation of a signal received therein or transmitted therefrom, said signal having two mutually orthogonal components, namely a vertical component (Cv) and a horizontal component (Co).

Abstract: This invention concerns a system (1) for electronically aligning the polarisation of an antenna (2;2b) with the polarisation of a signal received therein or transmitted therefrom, said signal having two mutually orthogonal components, namely a vertical component (Cv) and a horizontal component (Co).

Abstract: This invention is related to a high efficiency antenna (1) having compact dimensions, particularly for installation on a vehicle, such as an aircraft or a high velocity train or a motor vehicle, comprising a main circular reflector (5), an illuminator (2) or feed, centrally mounted with respect to said main reflector (5), and a sub-reflector (3), mounted on said illuminator (2) by means of a positioning support member (4), said antenna (1) being installed upon a positioning member adapted to carry out azimuth and elevation polarisation movements.

Abstract: A transceiver or transponder particularly for synthetic aperture radar, or SAR, systems, operating in a frequency band having a central frequency, the transponder comprising a receiver (1) and a transmitter (2) both thermally stable and made by microstrip technology, the receiver (1) and the transmitter (2) being adapted to receive and to transmit, respectively, an electromagnetic wave provided with at least one linear polarisation, the receiver (1) being connected to the transmitter (2) by amplifier means comprising an amplifier unit (5) for each linear polarisation of the wave received by the receiver (1), each amplifier unit (5) including at least two amplifier stages (7, 9, 11) cascade arranged along a single microstrip and interconnected to one another and to an input and to an output of the corresponding amplifier unit (5) by means of coupling or matching stages (6, 8, 10, 12), the output signal of each amplifier unit (5) having substantially the same frequency as the input signal thereto, the amplifier

Abstract: A transceiver or transponder particularly for synthetic aperture radar, or SAR, systems, operating in a frequency band having a central frequency, the transponder comprising a receiver (1) and a transmitter (2) both thermally stable and made by microstrip technology, the receiver (1) and the transmitter (2) being adapted to receive and to transmit, respectively, an electromagnetic wave provided with at least one linear polarisation, the receiver (1) being connected to the transmitter (2) by amplifier means comprising an amplifier unit (5) for each linear polarisation of the wave received by the receiver (1), each amplifier unit (5) including at least two amplifier stages (7, 9, 11) cascade arranged along a single microstrip and interconnected to one another and to an input and to an output of the corresponding amplifier unit (5) by means of coupling or matching stages (6, 8, 10, 12), the output signal of each amplifier unit (5) having substantially the same frequency as the input signal thereto, the amplifier

Abstract: An antenna is composed of a number of subarray radiating elements, with an aperiodic geometry, which assures connections between satellites and between satellites and ground stations. The aperiodic structure makes it possible to eliminate possible interference acting on the connection. The possible presence of the array grating lobes during steering of the array beams in the angular sector of interest is reduced. The presence of a grating lobe within the field of view which can cause interference with another low orbiting satellite is avoided, so as to improve reception quality characteristics. The invention is applicable to microwave antennas and space-borne systems by eliminating the presence of grating lobes in the field of view.

Abstract: A multibeam antenna, which has a high switching capability with high RF power levels, consisting of three subarrays (5,6,7) which suitably spaced, assure angular coverage in the azimuth hemispace from 0.degree. to 180.degree.. A single beam forming network (2, 3) provides each subarray with the correct field amplitude and phase distribution. Switching is performed electronically.