Patent ID: 7696444

Claim:
A device for varying capacitance, comprising: a first dielectric ( 54 ) and a second dielectric ( 55 ), the first dielectric ( 54 ) and the second dielectric ( 55 ) being arranged in parallel and spaced apart from each other to form an isolation layer ( 58 ) therebetween; a first electrode ( 56 ) and a second electrode ( 57 ), the first electrode ( 56 ) and the second electrode are connected to the first dielectric ( 54 ) and the second dielectric ( 55 ) at the same one end face of the first dielectric ( 54 ) and the second dielectric ( 55 ), respectively, an elastic conductive pad ( 52 ) being disposed at the other end face opposite to the one end face; and a gasket ( 53 ) being disposed between the first dielectric ( 54 ) and the second dielectric ( 55 ) and the elastic conductive pad ( 52 ).