Abstract: In this letter, the maximal achievable bandwidth of an Archimedean spiral antenna above a reflector is investigated. This bandwidth is defined by the frequency range where the gain in the ...

For circular charging pads, employing a symmetrical Archimedean spiral, a magnetic null occurs at a misalignment distance equal to approximately 40% of the pad diameter (or about 70% of the coil ...

Find more information on the Altmetric Attention Score and how the score is calculated. Spiral phase contrast imaging and bright-field imaging are two widely used modes in microscopy, providing ...