An Internal Triple-Band Planar Inverted-F Antenna

Abstract

A novel internal triple-band planar inverted-F antenna (PIFA) for operating at Personal Communication Services/International Mobile Telecommunications (PCS/IMT)-2000/Bluetooth bands is proposed. The proposed antenna can be reduced the size by using the radiating element with thickness and via hole. A broadband characteristic is obtained by optimizing the thickness of radiating patch and the offset gap between patch and ground. The dual resonant frequencies are obtained by optimizing the slit lengths and the location of via hole. This proposed antenna is well suited to the internal antenna due to small size and wide bandwidth of about 42%, which is covered with the PCS (1.75-1.87 GHz), IMT-2000 (1.92-2.17 GHz) and Bluetooth (2.402-2.48 GHz) bands. The design of proposed antenna and experimental results are discussed.