Abstract
The compact high gain planar antenna excited by the ultra low profile inverted L antenna is analyzed numerically and experimentally. The unbalanced fed inverted L antenna is mounted on the rectangular conducting plane. Two parasitic conducting planes are located above the inverted L antenna. The design frequency is from 2.40 GHz to 2.45 GHz. When the antenna size is 61 mm by 63 mm by 12 mm, S_<11> less than -10dB is satisfied at the frequencies from 2.20 GHz to 2.55 GHz. The directivity becomes more than 8 dBi at this frequency band. In the numerical analysis, the electromagnetic simulator "WIPL-D" based on the Method of Moments is used.