Dr Andrew Mackay has expertise in most aspects of electromagnetic engineering, from the latest cutting edge theory and analysis to computational methods and the practical design of innovative antennas. From radar clutter statistics to new applications of chaos theory in ray tracing and electromagnetic fields. In recent years he has published in the theory and design of optimal radar absorbent materials and has recently submitted papers on fundamental bandwidth limits of finite antennas and on the dispersion properties of negative refractive index materials. He is the author of QDAS, frequency selective surface (FSS) analysis software, which is currently available for free download (a limited trial version) from the Q-Par web-site. Other interests include Aikido, orchid growing and painting (not necessarily related) together with a deep interest in all aspects of mathematics and the physical sciences.