This article presents a high gain broadside radiation antenna based on spoof surface plasmon polaritons (SSPPs). It is designed on the metamaterial-inspired substrate integrated waveguide (SIW) with two rows broadside-coupled complementary split ring resonators (BC-CSRRs). The overall dimension of the SSPPs antenna is <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1.15λ× 0.61λ× 0.04λ</tex> . The gain is more than 9.19 dBi and achieve 11 dBi at 23 GHz. The proposed SSPPs antenna has the merits of high gain, low cost and easy fabrication. Such antennas will be highly desirable in millimetre-wave applications.
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Ning et al. (2024) studied this question.
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