Pi4NoRM · Piezomagnetic ferrites for self-biased non-reciprocal millimeter wave devices

The relentless demand to increase data rates, traffic, and connected devices in our mobile communications has prompted a paradigm shift in wireless technology. 5G and the forthcoming 6G will use mm-waves and miniaturized antenna systems that need to be low-cost and energetically efficient. An unresolved challenge of this transition is the miniaturization of non-reciprocal devices above 100 GHz. Pi4NoRM envisions an on-chip integration of miniaturized self-biased non-reciprocal magnetic components for the forecasted 6G evolution. Those passive devices are significant components fulfilling three critical functions within RF systems: decoupling amplifiers, protecting the systems against mismatched impedances or electromagnetic aggression and enabling the Full-Duplex operation of antennas. Pi4NorM aims to fill the gap between materials science and mm-wave engineering to develop sub-THz, ultra-compact, self-biased non-reciprocal elements. The success of Pi4NoRM could open an expansive innovation roadmap toward more capable RF systems and radar. For this reason, a strategic transfer strategy is also implemented in Pi4NoRM.