We present a compact silicon-based surface grating antenna featuring an aperture size of less than 5 µm 2 which has a measured wide far-field beam width of 44°×52°. The antenna is based on a single-etch grating and a Bragg reflector on a 300-nm-thick silicon-on-insulator (SOI) platform.
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Khajavi et al. (2024) studied this question.
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