Earl McCune is a practising engineer and Silicon Valley entrepreneur. A graduate of the University of California, Berkeley, Stanford University, and the University of California, Davis, he has over thirty-five years of postgraduate industry experience in wireless communications circuits and systems and more than sixty-five issued US patents. Now semi-retired, he has founded two successful start-up companies in addition to working in medium and very large sized corporations. He is also the author of Practical Digital Wireless Signals (Cambridge University Press, 2010).