Millimeter-wave and Terahertz technologies recently have shown tremendous potential applications ranging from high-speed wireless communications to biomedical imaging through their abilities to foster ultra-high-speed networks and high-resolution sensing applications. However, despite the significant efforts in this part of the electromagnetic spectrum, enabling scalable and chip-scale THz technology is still a major challenge and yet there is still a lack of efficient devices and systems.
In this dissertation, I have explored the design and implementation of devices and systems operating across mm-Wave to THz bands by mitigating fundamental inherent challenges through architectural innovations in electromagnetics and circuit co-design. To highlight some of my research works in this regard, I have experimentally demonstrated the highest reported on-chip lens-less THz power generation capability, THz wireless-link localization, and THz/mm-wave intelligent reconfigurable surfaces for improved and efficient wireless communication. These systems not only open-up unique and interesting design spaces but will also play a critical foundational role for the next generation of high-speed communication links, high-resolution imaging, and sensing applications.