%0 Journal Article %T Low-Cost Unattended Design of Miniaturized 4 × 4 Butler Matrices with Nonstandard Phase Differences %A Bekasiewicz, Adrian %A Koziel, Slawomir %J Sensors (Basel, Switzerland) %V 21 %N 3 %D 2021-01-27 %I MDPI %~ DeepDyve