| 摘要 |
PURPOSE: A PIFA(planar inverse F antenna) is provided to widen the bandwidth of a small-sized antenna by using arms having different lengths which are formed on one side and other side of a radiating plate, respectively. CONSTITUTION: A PIFA includes a ground plate(20), a power feed pin(21), a connection plate(22), and a radiating plate(23). The power feed pin penetrates a portion of the ground plate to contact an inner core of a specific transmission line, thereby feeding the power transferred through the inner core. The connection plate is implemented so as to be parallel with the ground plate and is connected to one side of the ground plate in a vertical direction. The radiating plate is coupled with one end of the power feed pin to radiate a resonance frequency corresponding to the power fed by the power feed pin. Arms(23a,23b), having lengths different from each other, are formed on the radiating plate.
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