Steve Arar is an electrical engineer with a PhD in microelectronics. His main interest is analog circuits such as analog filters, phase-locked loops, direct-digital frequency synthesizers, analog-to-digital converters, etc. He also has ample experience in digital signal processing. Based on his academic experience, Steve has reached the idea that most seemingly difficult-to-grasp topics are in fact simple. In other words, as Albert Einstein puts it, “If you can't explain it simply, you don't understand it well enough.” An intuitive revisit of electronics engineering is the main goal of Steve’s articles.