Distinguished Prof. Yahya Rahmat-Samii delivered a keynote speech entitled, “The Mesmerizing Evolution of Reflector Antennas in Diverse Application: A Passage from the Ancient Past to the Renaissance and the Present” at the 2015 International Antennas and Propagation Symposium (ISAP), Tasmania, Australia, November 9-12, 2015. ISAP started in 1971 and is held once every two years and this year marked its 20th symposium. Under the technical sponsorship of IEEE and IEICE, ISAP has become the premium antennas and propagation conference in Asia-Pacific region with nearly 400 participants internationally.