Disclosed is a synchronized adaptive infrastructure network. The high power path includes a high power mode amplifying circuit for amplifying an input signal in the high power mode. As compared with a background art internal combustion engine in which a combustion chamber is disposed opposite to a crankshaft with a piston located therebetween, a ratio of an increased amount of the volume of the combustion chamber to an increased amount of a crank angle of the piston from the top dead center position can be suppressed at a small value. The central opening overlaps the central cavity formed in the first surface of the heat spreader. The underlying electrode layer is disposed on the first principal surface.