MODIFIED PLANAR INVERTED F-ANTENNA

The design of a modified planar inverted F antenna (PIFA) which is mor e compact (antenna length < lambda(0)/8 and antenna height < 0.01 lamb da(0)) and has a much wider antenna bandwidth (greater than 10 times t hat of a simple PIFA) is demonstrated. The reduction in antenna length is achieved by meandering the radiating patch, while the enhanced ban dwidth with low antenna height is obtained using a chip-resistor load in place of the shorting post. A typical design of the modified PIFA i n the 800 MHz band has been implemented, and experimental results are presented and discussed.