The impact of scaling in advanced RF/MS-CMOS has been extensively discussed but there has not been a publication that compares the RF characteristics of 28nm high-K metal gate HKMG and PolySiON technologies fabricated in the same facility. In this work, we show that HKMG improves transistor f<sub>T</sub> and increases varactor tunning range. However, it can… (More)
We report experimental improvement of both RF and digital AC performance of a 28nm CMOS technology by predoping the gate poly. The results are explained in terms of the physical structure of the gate and the atomic structure of the gate TiN/Si interface in the gate stack.