Bandwidth extension of unbalanced fed ultra low profile inverted L antenna

The return loss bandwidth of the unbalanced fed ultra low profile inverted L antenna has been extended by adjusting length and width of its conducting plane. The return loss less than -10 dB is satisfied at the frequency from 463 MHz to 606 MHz. This frequency bandwidth is almost 60 % of the television frequency band in Japan. This antenna is promising as the driven element of compact reception antenna of the digital terrestrial television broadcasting in Japan.