| 摘要 |
[Problem] To provide a socket that supplies a discharge current and electromagnetic waves for spark discharge to a spark plug without installing a separate mixer. [Solution] The present invention is provided with: an electrical supply part 110 that is electrically connected to a terminal 20 of a spark plug 1; and an annular antenna 121 that supplies electromagnetic waves from a electromagnetic wave oscillator 104 to an inner conductor 2 of the spark plug by the capacitive coupling, via an insulator 3 of the spark plug 1, of the electromagnetic waves with the inner conductor 2 of the spark plug 1. The annular antenna 121 is preferably formed by winding the tip of a coaxial cable that serves as the transmission cable for the electromagnetic waves. |
