mm-Wave Contactless Connectors: From Fundamental Research to Commercialization
This talk presents the overview of solid-state-based mm-wave wireless interconnects. Conventional mechanical connectors face issues from long-term reliability, signal-integrity, environmental hazard, and large form-factor. To remove the physical connection, direct baseband couplings via capacitors, inductors, and transmission lines, and carrier-modulation couplings via antennas have been explored for the past 40 years. The focus of this work is mm-wave wireless interconnects implemented in advanced CMOS technologies. Carrier frequencies ranging from 60GHz to 150GHz, and modulation schemes including on-off-keying and multi-level pulse amplitude modulation are demonstrated to achieve data rates of 6Gb/s to 30Gb/s with the energy efficiency less than 10 pJ/b.