paper

Serrodyne frequency translation using time-modulated metasurfaces

arXiv:1905.06792 · doi:10.1109/TAP.2019.2943712

Abstract

Temporally modulated metamaterials have attracted significant attention recently due to their non-reciprocal and frequency converting properties. Here, a transparent, time-modulated metasurface that functions as a serrodyne frequency translator, is reported at X-band frequencies. With a simple biasing architecture, the metasurface provides electrically-tunable transmission phase that covers . A sawtooth waveform is used to modulate the metasurface, allowing Doppler-like frequency translation. Two such metasurfaces can be cascaded together to achieve magnetless devices that perform either phase or amplitude non-reciprocity.

submitted also to IEEE Transactions on Antennas and Propagation

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