Solid State Non-Reciprocal Microwave Devices

This proposal focuses on developing gyrators, isolators and circulators fabricated from goniopolar materials that have the potential to operate at high-THz frequencies. These non-reciprocal devices are essential components in telecommunications, antennas and quantum computers. The devices will be designed like those built from Hall plates, but with goniopolar materials used, as these avoid the use of external magnetic fields and thus can be much better miniaturized and integrated and are calculated to have much lower insertion losses. We will design and demonstrate operation of non-reciprocal goniopolar devices in the critical super-high radio frequency regime between ~3-20 GHz as a starting point for exploration of the high-frequency THz regime. We anticipate the proposed work will enable the development of non-reciprocal microwave elements that can extend over a wide frequency range without design changes, potentially deep into the THz range, to ultimately provide a one-package ultra-broadband technology that allows operation at considerably higher power than conventional technology.