The ever-increasing quest for wireless communication capacity along with overcrowding of available spectrum resources calls for development of full-duplex RF front-end modules with extreme frequency scalability to untapped cm- and mm-wave regimes (i.e. 3-300 GHz). Realization of simultaneous data transmission and reception in the same frequency band and at the same time calls for transforming integrated spectral-processing technologies that enable wideband nonreciprocal operation with extreme frequency scalability beyond the ultra-high-frequency regime (>UHF: 0.3-3GHz).
We investigate novel nano-acoustic technologies that fuse the nonreciprocal acoustoelectric wave propagation physics in single-crystal germanium (Ge) with frequency-selective transducers to realize monolithic spectral processors with scalable frequencies over cm- and mm-wave regimes. Ground-breaking results coming up shortly. Stay tuned!