ELECTRIC FIELD RECEPTION SYSTEM

PROBLEM TO BE SOLVED: To provide an electric field reception system which can receive only an electric field induced from a signal source to earth. SOLUTION: An electric field reception system receiving an electric field induced from a signal source 1 to an earth 2 includes an earth side electrode 3 arranged facing the earth 2, a signal source side electrode 4 arranged facing an opposite side of an earth side of the earth side electrode 3 and located on a signal source side of the earth side electrode 3, and a differential amplifier 51 performs differential amplification of a potential difference which has occurred due to the electric field between the signal source side electrode 4 and the earth side electrode 3. An area of the signal source side electrode 4 is larger than that of the earth side electrode 3 and an electric capacity C4 becomes equal to an electric capacity C3. Therefore, a noise to the signal source side electrode 4 from the earth 2 and a noise to the earth side electrode 3 from the earth 2 are canceled each other. COPYRIGHT: (C)2010,JPO&INPIT