Prof. Byun is a corresponding author of the article, and detailed information is as follows:
Jun Hur, Gangil Byun*, and Hosung Choo, “Design of Small CRPA Arrays with Circular Microstrip Loops for Electromagnetically Coupled Feed,” J Electromagn Eng Sci., vol. 18, no. 2, pp. 129-135, Apr. 2018. DOI: https://doi.org/10.26866/jees.2018.18.2.129