Arthur Yaghjian Scientific Contributions in Antennas, High-Frequency Diffraction, and Metamaterials

Dr. A. Yaghjian stands out as one of the most innovative, creative, and influential scientists in Electromagnetics (EM). His remarkable qualities stem from his impressive fundamental background in Maxwell's equations and on his unparalleled ability to formulate complex EM problems in a rigorous and impactful manner. Undoubtedly, he is among the few remaining repositories of knowledge in EM theory. This paper undertakes a review of his primary contributions, with special emphasis on Antennas, High-Frequency diffraction, and metamaterial, that have had a profound impact on the EM community.