Abstract: The reconfigurable radio remote unit for distributed antenna systems comprises a plurality of integrated radio frequency boards each dedicated to a respective frequency band, and configuration means for remotely selecting the frequency bands and/or for setting the power level of the frequency bands.

Abstract: The reconfigurable radio remote unit for distributed antenna systems comprises a plurality of integrated radio frequency boards each dedicated to a respective frequency band, and configuration means for remotely selecting the frequency bands and/or for setting the power level of the frequency bands.

Abstract: The reconfigurable radio remote unit for distributed antenna systems comprises a plurality of integrated radio frequency boards each dedicated to a respective frequency band, and configuration means for remotely selecting the frequency bands and/or for setting the power level of the frequency bands.

Abstract: The reconfigurable radio remote unit for distributed antenna systems comprises a plurality of integrated radio frequency boards each dedicated to a respective frequency band, and configuration means for remotely selecting the frequency bands and/or for setting the power level of the frequency bands.

Abstract: The reconfigurable radio remote unit for distributed antenna systems comprises a plurality of integrated radio frequency boards each dedicated to a respective frequency band, and configuration means for remotely selecting the frequency bands and/or for setting the power level of the frequency bands.

Abstract: The reconfigurable radio remote unit for distributed antenna systems comprises a plurality of integrated radio frequency boards each dedicated to a respective frequency band, and configuration means for remotely selecting the frequency bands and/or for setting the power level of the frequency bands.

Abstract: The present invention relates to a piezoelectric sensor (1,100) comprising a piezoelectric material (10) interposed between a first (11) and a second (12) electric contact element. The first electric contact element (11) comprises at least two sensing areas (110, 111) spatially separated along a sensing direction. It also describes a sensor node that includes the piezoelectric sensor, a system and a method for monitoring the integrity of a structure using said piezoelectric sensor.

Abstract: The present invention relates to a piezoelectric sensor (1,100) comprising a piezoelectric material (10) interposed between a first (11) and a second (12) electric contact element. The first electric contact element (11) comprises at least two sensing areas (110, 111) spatially separated along a sensing direction. It also describes a sensor node that includes the piezoelectric sensor, a system and a method for monitoring the integrity of a structure using said piezoelectric sensor.

Abstract: A device for measuring the concentration of a gas dissolved in an electrical insulation oil comprises a measuring member (2), internally defining a measuring chamber (3) and a conduit (4) to access the measuring chamber (3), a membrane (6) permeable to gases, inserted inside the conduit (4) for insulating the measuring chamber (3) against the oil and allowing gas to pass from the oil to the measuring chamber (3), a sensor (20) located in the measuring chamber (3) for measuring the concentration of gas in the measuring chamber (3), and a reinforcing grid (8) positioned in the conduit (4) for preventing deformation of the membrane (6), where the grid (8) is located at a position adjacent to the membrane (6) on the side opposite to the measuring chamber (3), and has at least one through section (9, 10) for allowing the oil to exert pressure directly on the membrane (6).

Abstract: A system for correction of the fuel injection time control upon variation in altitude, for a heat engine having an electronic fuel injection system, and having means for substantially detecting the value of the external atmospheric pressure and the consequently correcting the value of induction air pressure utilized by a central processing unit of the injection system for calculating the injection time.

Abstract: A system for limiting the maximum speed of an internal combustion engine comprising an electronic injection system, which system comprises first means for detecting when the speed of the engine exceeds a first given threshold value, and for consequently disabling fuel supply to the injectors, and second means for determining whether the speed of the engine exceeds a second given threshold value higher than the first threshold value, and for consequently maintaining disabled or enabling fuel supply.