Design of an Unequal Arrow Based Printed Antenna for Radar Applications

A low profile printed antenna for radar applications are here proposed and analyzed. In recent years, great interest was focused on Printed antennas for their small volumes, excellent integration, low costs and good performance. With the continuous growth of wireless communication service and the constant miniaturization of communication equipment, there are higher and higher demands for the volume of antennas, integration and working band. This paper represents an unequal arrow based printed antenna for many kind of wireless communication applications. Unequal arrow based can be achieved with asymmetries. The emphasis is on to increase the bandwidth of the antenna. Resonant frequency has been reduced drastically consists of two triangular and one unequal shaped slot located from the conventional microstrip patch antenna. It is shown that the simulated results are in acceptable agreement. More importantly, it is also shown that the differentiallydriven microstrip antenna has higher gain of simulated 3.73 dBi at 9.40635GHz and 0.33 dBi at 13.3046GHz and beam width of simulated 136.189 at 9.40635GHz & 131.27at 13.3046GHz of the printed antenna. Compared to a conventional microstrip patch antenna, simulated antenna size has been reduced by 53.26% with an increased frequency ratio. The initial design and optimization of the printed antenna is operating in X band (8-12GHz). The Zeland IE3D [18] software has been performed.