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Ka-Hyeon Lee

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Open access Oct 2026

Eight-beam wide coverage ridge waveguide slot antenna array based on 4×4 Butler matrix

Multibeam antennas fed by Butler matrices (BMs) can effectively combine passive beamforming networks with antenna arrays. However, limited structural approaches exist for BM-integrated antennas to address the issues associated with scan loss and null regions. This paper presents a ridged waveguide slot antenna arra...

Soyeon Jo, Ka-Hyeon Lee, Su-Jeong Yun et al. · 0 citations

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