On-Chip Transformer: Overview, Apllications and Modeling

Abstract

According to the chronological literature survey, there exist three types of the on-chip transformer i.e thetraditional on-chip passive transformer, the Distributed active transformer (DAT), and the CMOS gyrator-Cactive transformer (Yuan 2007). Formerly, there exist many review articles on the on-chip transformer.However, these articles focus on the on-chip passive transformer due to its renowns where as DAT and CMOSgyrator-C are overlooked.Hence, the review on the on-chip transformer with the formerly overlooked DAT and CMOS gyrator-C activetransformer also focused has been proposed in this study. The overviews, applications and modelings of allthree types of the on-chip transformer have been discussed. Furthermore, an interresting open research issueis also suggested.