A New Microstrip PIFA antenna is proposed for wireless applications. The proposed antenna structure is consisting of microstrip antenna with T shaped slots on the patch and two parallel slots in the ground for bandwidth enhancement. This antenna has been design based on a FR-4. The PIFA antenna design have two an operating frequency of 2.34 GHz and 25.4 GHz with S11 -25 and -15.2 dB, while peak gain is about 2.82 dB, 9.654 dB and directivity is 3.122 dB, 9.776 dB over the operating frequency, respectively. Therefore, it suitable for applications of wireless communication with good matching and return loss characteristics. The proposed design model and performance evaluation of PIFA antenna has been executed by CST Microwave Studio.