Moonil Kim was born in Seoul, Korea, on March 14, 1965. He received the B.S. degree from Illinois Institute of Technology in 1987 and the M.S. degree from the California Institute of Technology in 1988. He is currently working toward the Ph.D. degree as a mem- ber of the MMIC group at Caltech. He has been working on millimeter-wave power combining and beam steering circuitry.