Abstract:<p>A series-fed traveling-wave uniform circular array of sequentially rotated slot antennas producing two orbital angular momentum (OAM) modes is presented. The antenna operates at 10190 MHz, is built using a single layer of substrate integrated waveguide technology, and can be readily expanded to create additional modes from a shared aperture. A unique simulation-based step-by-step design procedure is presented, taking practically all functional features of a series-fed array into account. A novel formu… Show more
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