A new compact metasurface microstrip antenna achieves 6.97 dBi gain in 5G applications, indicating significant size reduction benefits.
A new compact N‐shaped metasurface microstrip antenna (NM‐MSA) is designed for the advanced 5G/B5G communications. The NM‐MSA is featured with the elaborated metasurface patch, enabling its size to be electrically smaller than the conventional MSA. To demonstrate the NM‐MSA's performances, a particular antenna sample is fabricated on a dielectric substrate with ε r = 2.2. It has a patch size of 21 mm × 20 mm but is observed to resonate at 3.506 GHz. Considering the guided wavelength at 3.506 GHz is λ g = 57.69 mm, the practical NM‐MSA's patch size is normalized as 0.364λ g × 0.347λ g , which breaks the conventional MSA's 0.5λ g limitation. In addition, the NM‐MSA sample has an acceptably high antenna gain of 6.97 dBi and regular radiation patterns, which can well meet the demands of 5G/B5G communications.
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Wei et al. (2025) studied this question.
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