The maximum level of electric field distribution is occurred at the center of input port power as 324 V/m. Moreover, the rice weevil is placed at the position that is concluded in Table II (code A1 and A2). The electric field distribution is directed to the rice weevil more than the rice. The rice weevil has the electric field intensity equal to 84.2 V/m and rice is equal to 73.5 V/m. In addition, the rice weevil is placed at the position that is concluded in Table II (code A3 and A4). In Figs. 6 (c) and (d), the electric field distribution of code A3 and A4 is satisfied because it has position as near the input port power. Rice weevil has the electric field intensity equal to 114.7 V/m and rice is equal to 100.1 V/m. In Fig. 6(e), when the rice weevil is placed at the position that is concluded in Table II