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Sometimes the right tool for the right job appears almost out of nowhere. That was certainly the case for [Jonathan] who came across an unusual but well-designed robot at a secondhand shop. The ...

Abstract: In this communication, we propose a dual-band Fabry-Perot (F-P) cavity antenna with a wideband low radar cross section (RCS) by integrating a Pancharatnam-Berry phase coding metasurface ...