Department Publications

The objective of this study is to propose a heuristic model of energy propagation due to an anomaly; electromagnetic (EM) field penetration into a continuously covered conducting enclosure (Faraday shield) from an external radio frequency source, violating the accepted model in the EM field theory. In this study, at an arbitrarily selected frequency, range of 26.965–1,800 MHz, of an external frequency source, an EM field inside the conducting enclosure was observed, contrary to expectations, which was followed by a systematic examination. Although no induced voltage could be expected inside the enclosure according to the classical theory, the experiment revealed a clear induced voltage inside, an attenuated induced voltage of −18.0 to −1.0 dB (for the range of frequencies 26.965–1,800 MHz) was observed. Hence, these results apparently contradict the established notion that an EM field cannot …

5.1 Discussion: One of the most cumbersome and difficult problems associated with obtaining solutions for electromagnetic integral equations has been the manipulation of large matrices resulting from numerical methods such as MoM. Unfortunately, such situations are unavoidable in practical problems where the analysis (such as electro-magnetic wave scattering or radiation characteristics) has to be made in respect of objects of complex shapes and sizes. As mentioned in the introductory chapter, several techniques have been developed over the years in order to address this problem. Objective of this research work has been, to investigate the possibility of addressing the above-mentioned problem through wavelet transform techniques that started gaining popularity among the research community over a decade ago. Though there is evidence that wavelet transform techniques have been invented in early 20t h …