As data speed on printed circuit boards have increased, new difficulties have evolved and necessitating the development of new analytical methodologies and solutions. It will be necessary to continue research in order to keep up with the ever-increasing data rates and smaller form factors. The literature and issue pertaining to the EMI/EMC of printed circuit boards are reviewed in detail in this paper for the purpose of providing an overview and to assist people looking for more extensive references related to this area. This review includes EMI issues related to high speed PCB, EMI measurement techniques using software and hardware and solution for the EMI issues. Also reviewed the use of electromagnetic band gap (EBG) technology to minimize electromagnetic interference (EMI). In recent years, there have been a number of articles describing the several uses of EBG for the purpose of blocking undesired radiation at discontinuities. Various EBG structure performances with its applications are analysed and detailed.

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Electromagnetic noise is a operational disturbances in the high frequency operational circuits. Parasitic filters are not efficient in the case of high frequency electronic circuits. In order to mitigate the noise level in such circuits, novel electromagnetic bandgap structure is designed, simulated and measured the noise level. Electronic design automation (EDA) tools help for these work and provide the designer to prevent the rework which leads to time and cost savings. It is essential to understand the capabilities of the tool. This paper gives the design and simulation procedure of the Novel L Bridge with double square embedded Electromagnetic Bandgap structure (EBG) for the frequency range 0 GHz to 10 GHz and the same structure is implemented in hardware and measured the results using R&S®ZVH Vector Network Analyzer. It is observed that the simulated and measured results are in good alignment with the result values.