Tri-Band Rectangular Spiral Slot Antenna with L-Shaped Slot Antenna for WLAN and Radar Applications

Tri-band rectangular spiral slot (RSS) antenna with an L-shaped slot antenna insertion is introduced in this paper. The antenna was designed on the substrate with 2.2 of dielectric constant and 1.575 mm of thickness. FDTD method was adopted to evaluate the proposed antenna characteristics A rectangular spiral slot antenna was designed to support dual-frequency at 2.44 GHz and 8 GHZ. An L-shaped slot antenna was inserted to obtain more resonant frequency at 5.2 GHz. The simulation results revealed that the proposed antenna could be used to support tri-band of frequency which is compatible to IEEE 802.1 la or HIPERLAN (5.2 GHz) standard, IEEE 802.1lb/g (Wi-Fi 2.44 GHz) standard and 8.0 GHz satellite or radar communications.