抄録
The structure of the compact and high gain antenna for the reception of the digital terrestrial television broadcasting in Japan is optimized by the PSO algorithm. The unbalanced fed inverted L antenna on a rectangular conducting plate is used as the driven element and two conducting plates are located at the forward and backward directions. Additional two conducting plates are located above and below of the driven element in order to increase the directivity. In the numerical analysis, the electromagnetic simulator ”WIPL-D” based on the method of moment is used.