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1Ultra wide Band (UWB) technology is one of the most promising solutions for future communication systems due to its high-speed data rate and excellent immunity to multi-path interference. The frequency range for UWB systems approved by the FCC is between 3.1 and 10.6 GHz. The printed antenna is designed to cover the UWB in particular, the lower band of 3.1-5 GHz. It is a well known concept that the bandwidth of wire antenna can be increased by increasing the diameter, thickness of wire. This concept is tried here to enhance the bandwidth by increasing the size of the monopole by different sizes and geometries.In this paper, Wide Rectangular Patch is considered and tested its response for UWB applications,and this patch is loaded with one left strip at bottom of the patch on one side and then it is loaded with two strips on either side of the patch,and the three prototypes are tested and their reponses are compared.

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In this paper, statistical antenna approach is applied to develop an equivalent model for the fields generated by a fixed excitation inside a jet engine with dynamic rotating blade. The equivalent model is represented by a jet engine with static blade and a random excitation. A simplified jet engine, containing one set of 24 blades, is simulated for different excitation positions through full wave simulation analysis by, 'Ansys R ⃝ HFSS '. The field distribution inside the engine results from a randomly excited Hertzian dipole antenna is extracted and are studied upon different points, which are located on a circular plane along the engine axis. For each antenna position, we study specified blade position instead of analyzing the rotation effect of blade. The real and imaginary components of the electric field along the engine axis are extracted and analyzed statistically. Using a Gaussian distribution excitation, the field components are proved to have Gaussian distribution too at different points. For specified blade positions, the mean values for the field distribution are calculated. Most of the mean values are proved to have almost the same value trend independent of the blade position. This methodology provide a novel approach for analyzing the field distribution inside the jet engine by analyzing static jet blades and random source excitation with prespecified parameters.978-1-4799-0091-6/13/$31.00 c ⃝ 2013 IEEE

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