PIFA Antenna for Wireless Communications

PIFA is abrivation of planar inverted antenna is actually a patch antenna where a shorting pin is introduced. An implantable compact planar inverted antenna designed for wireless telemetry is being proposed for operating in Australian ISM band of 900 MHz and 915-928 MHz IN wireless telemetry pifa antenna was designed and which is explained in this paper..PIFA antenna can also designed for testing antenna inside living body. The PIFA antenna is basically developed from the monopole antenna, Inverted L is realised by folding down the monopole in order to decrease the height of the antenna at the same time maintaining identical resonating length. When feed is applied to the inverted L, the antenna appears as inverted F as shown in figure. Also the addition of a shorting pin between the ground plane and patch planes increases the effective size of the PIFA antenna, thus further reducing the physical dimensions .In this paper i am going to compare it with the two types of feeding techniques i.e. line feeding with coaxial feeding.