CMOS and SiGe bipolar circuits for applications up to 110 GHz

Recently, CMOS has been demonstrated to be a viable technology for very-high-bit-rate broad-band and wireless communication systems up to 40 Gb/s and 50 GHz. Advances in device scaling and doping-profile optimization have also resulted in SiGe bipolar transistors with impressive performance, including cut-off frequencies of more than 200 GHz. This paper presents advances in circuit design which fully exploit the high-speed potential of a 0.13 µm CMOS technology up to 50 GHz and of a high-performance SiGe bipolar technology up to 110 GHz operating frequency. The combination of advanced circuit techniques and a state-of-the-art fabrication-process technology results in continuing the upward shift of the frequency limits.