Microstrip Slot Antenna with a Finite Ground Plane for 3.1{10.6GHz Ultra Wideband Communication

This paper introduces an Ultra Wideband microstrip Slot Antenna conformed to craving for the band of IEEE802.15.3a UWB (3:1GHz » 10:6GHz) communication. In this paper, the design for enhancing impedance bandwidth of wideband microstrip slotting antenna with a flnite ground plane is proposed and studied. With this design, a matching impedance bandwidth (SWR • 2) about of more than 146% was achieved; as a result, the bandwidth can be located at the wireless communications from 2.3GHz to 12GHz. The variations of gain are changing from 0.2 to 6.98dBi. In addition, the design has been a planar proflle and it can easily be integrated in small mobile units; besides, it also can be in the laptops or various remote-sensing devices etc.. 1. INTRODUCTION In the communication systems, to develop small size, lightweight, low proflle, broad bandwidth, and proper polarization are fundamental demands in the antenna design for the miniaturization of the communication equipment. Microstrip antennas have many desirable features, such as low proflle, lightweight, and are usually fabricated by a photolithographic etching process or a mechanical milling process of these kinds antennas, making the construction relatively easy and inexpensive. These features make microstrip antennas are one of the most widely used types of antennas in the microwave frequency range, and they are often useful for many applications in the satellite communication and mobile communication systems. However, the major drawback of these kinds of antennas inherently has limited impedance bandwidth (VSWR? 2), if the narrow bandwidth of the microstrip antenna can be widened, then it can serve as a dual antenna for second- and third-generations of mobile communications systems. Therefore, developing broadband techniques to enhance the bandwidths of the microstrip antennas is very important. Recently, most of the research on microstrip antennas focused on methods to increase their