Abstract: There is described a filtering device (1) for systems for supplying gas to internal combustion engines, comprising, integrated in the device, sensor means (10, 11, 12) for detecting the pressure and temperature of the gas being injected into the engine as well as the pressure at the inlet manifold of the engine.

Abstract: An antenna module for receiving a multiplicity of radiofrequency signals comprises a first patch antenna (2) with a second patch antenna (3) disposed above it. The first patch antenna (2) comprises a first dielectric substrate (4) having a top surface (5) with a first antenna structure (6) made of a first electrically conductive layer (7) laying thereon, and a bottom surface (8) with a second layer of electrically conductive material (9) thereon. The second patch antenna (3) comprises a second dielectric substrate (10) having a top surface (11) with a second antenna structure (12) made of a third electrically conductive layer (13) laying thereon, and a bottom surface (14) with a fourth layer of electrically conductive material (15) thereon. One of the first (6) and second antenna structures (12) has a substantially circular or elliptical surface, and the other has a substantially polygonal surface.

Abstract: There is described a filtering device (1) for systems for supplying gas to internal combustion engines, comprising, integrated in the device, sensor means (10, 11, 12) for detecting the pressure and temperature of the gas being injected into the engine as well as the pressure at the inlet manifold of the engine.