Abstract: This article proposes a full-metal omnidirectional series-fed filtenna array. The antenna is primarily composed of an outer metal shell, a built-in metal post and three pairs of open-circuit ...

Digital picture frame brand Aura has announced a new take on its frames with the Aura Ink. The new digital frame opts for a low-power e-paper display, enabling a cord-free design that isn't stuck to ...

Abstract: Due to visual impairment and lack of social attention, the reading problem of the blind has not been well resolved. Many existing Braille reading devices still have many problems and are not ...