Miniaturized 3-dimensional transformer design. - Wei-Zen Chen; Kuo-Ching Hsu (CICC, 2005)

Three-Dimensional Fully Symmetric Inductors, Transformer, and Balun in CMOS Technology. - Wei-Zen Chen; Wen-Hui Chen; Kuo-Ching Hsu (IEEE Trans. Circuits Syst. I Regul. Pap., 2007)