Design and analyis of compact ultra-wideband inverted F-L microstrip patch antenna for intelligent transportation communication systems

Ultra-wideband (UWB) radio is a technology that has a wide range of applications including range measurement, materials penetration, and low probability of interception and interference communication systems. UWB signals are unusual, because they have a bandwidth greater than 25 percent of center frequency compared to less than unity percent for conventional radio signals. Recent developments make it possible to build a transmitter and receiver on a single chip at low cost. The intelligent transportation system (ITS) applications will use very low radiated power levels, usually less than a milli-watt. These capabilities are possible with current solid state electronics and low-cost chips can be made to perform a wide range of applications. The proposed compact ultra-wideband antenna structure has been analyzed using a commercial software and the radiation characteristics, such as, return loss, VSWR, input impedance, radiation patterns and the surface current densities have been introduced and fabricated, which offered excellent performance and have measured lower return loss up to -31.4 dB with percentage bandwidth 22.34 %.