The Bluetooth technology becomes a rapidly growing area of research in the field of mobile charging, interference, recognition and profile. Bluetooth technology operates 2.400-2480MHz in unlicensed industrial scientific and medical (ISM) band and it cover short distances, typically up to 30 feet (10 meters). It can handle data and voice transmissions simultaneously. Bluetooth is designed to use very little power, low bandwidth wireless connections so simple to use in daily life. The objective of this paper to design of u-shape patch antenna for 2.4GHz and this is applicable (class2, range 10m) of Bluetooth technology. In this paper the design patch antenna using substrate material Rogers RT/duroid5880, its dielectric constant is 2.2 and dielectric loss tangent 0.0009.