The biconical antennas are used as the Tx and Rx antennas. These antennas are chosen because they are easy to fabricate and have low distortion property. The geometry and dimensions of the antenna is shown in Fig. 3. The upper cone is connected to the center conductor of a coaxial line while the lower cone is connected to the shield conductor. The maximum diameter is 65.3 mm and the length is 37 mm. Only Rx antenna is