Design and simulation of an Ultra Wideband (UWB) Antenna for wireless Communication

D. K. Raghuvanshi1, A. K. Somkuwar2, Poonam Sinha3, T. K.Gupta4 and Ashish Patle5

1,2,,4,5Dept. of Electronics and Communication Engineering, MANIT Bhopal- INDIA 3Dept. of Electronics, UIT Barkatullaha University Bhopal-INDIA

Abstract. A design of a wideband printed microstrip antenna which was fed by a microstrip transmission line for the wireless communication through satellite is presented in this paper. All the design parameters like dimensions of strip, position of antenna, thickness of substrate and selection of dielectric material are optimized for the suitable VSWR characteristics, required downlink frequency (2.5 GHz to3.8 GHz) and gain. The antenna parameters like radiation pattern, input impedance, current distribution and gain are obtained by simulating the designed antenna using IE3Dv14.65 Zeland Software.

Keywords: UWB, VSWR, current distribution and antenna gain.

1. Introduction: Ultra-wideband is a radio technology that can be used at very low energy levels for short-range high-

bandwidth communications by using a large portion of the radio spectrum. UWB has traditional applications in non-cooperative radar imaging. Most recent applications are target sensor data collection, precision locating and tracking applications. Since the first Report and Order by the Federal Communications Commission (FCC) authorized the unlicensed use of UWB which must meet the emission masks on February 14, 2002, both industry and academia have paid much attention to R&D of commercial UWB systems. In UWB systems, antenna design is one of key technologies, and a suitable UWB antenna needs to full-fill requirements set by UWB technology and by portable devices alike, such as ultra wide bandwidth, directional or Omni-directional radiation patterns, constant gain and group delay over the entire band, high radiation efficiency and small size. Under the extensive demands of various wireless operations, UWB systems usually operate at close quarters with other wireless systems resulting in the intersystem interference. The frequency band allocated for UWB communications is 3.1-10.6 GHz. The typical existing narrow-band systems within this frequency band are WLAN (2.4-2.484 GHz / 5.15-5.35 GHz / 5.725-5.85 GHz), Wimax (2.5-2.69 GHz / 3.3-3.8 GHz / 5.25-5.85 GHz), E band applications (2–3 GHz) and C-band satellite communications (3.8-4.2 GHz) [4-6].

The UWB technology offers several advantages over conventional communications systems. For instance, there is no carrier frequency. Instead, UWB emits timed "pulses" of electromagnetic energy. Therefore transmitter and receiver hardware’s can be made very simple, which is necessary for the portable devices. There is a wide range of applications for UWB technology, which includes wireless communication systems, position and tracking, sensing and imaging, and radar. In this paper an antenna with bandwidth suitable for wireless and satellite communications and with sufficient gain is presented. This antenna covers major bands like GSM, AWS, WCDMA, UMTS, DSR, Wi. Bro. ISM application (Wi-Fi), Wi-max, Fixed microwave links and DMB, Onboard aircrafts internet based on the AMSS.

2. Design Consideration of Antenna.

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4. Conclusion A wideband microstrip antenna was designed with the suitable dimensions and position co-ordinates.

With this design we conclude that this antenna is well suited for the wireless LAN and WiMAX applications with the frequency of 2.5 GHz to 3.8 GHz. The measured gain is also suited with the required value. The design was simulated using IE3Dv 14.65 simulator. The parameters are also measured and compare by using an HP8510C vector network analyzer and the result are very well correlated with simulated results. The correlation coefficient is obtained 0.98. The mean square error obtained less (0.022). The experimental result like the antenna gain, VSWR ,Radiation patterns and current distribution shows that it is fit for this application.

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