Kohei Kuriyama

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A two-turn low-profile helical element backed by a cavity is investigated using frequencies within the Ku band. It is found that the beam width is sensitive to the cavity diameter D<sub>cav</sub>; as the D<sub>cav</sub> is decreased, the beam width increases. It is also found that the beam width is not sensitive to a cavity height of more than 0.2(More)
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