Reviews of Electromagnetics, Vol. V, 2026 EuCAP 2025 Special Issue DOI: 10.53792/RoE/2026/25017 Reviews of Electromagnetics EuCAP 2025 Special Issue Pin-Fin Heatsink Active Antenna Array With Joint Bandwidth Improvement, Footprint Miniaturization and...
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Reviews of Electromagnetics, Vol. V, 2026 EuCAP 2025 Special Issue DOI: 10.53792/RoE/2026/25017 Reviews of Electromagnetics EuCAP 2025 Special Issue Pin-Fin Heatsink Active Antenna Array With Joint Bandwidth Improvement, Footprint Miniaturization and Cooling Benefits Feza Turgay Celik1 *, Alexander Yarovoy1 , Yanki Aslan1 Abstract This paper presents a novel heatsink antenna array architecture that addresses electromagnetic (EM) performance, antenna miniaturization, and thermal management challenges in antenna-on-substrate (AoS) configurations. By integrating tilted fin heatsinks onto rectangular patch antennas, the proposed unit element improves convective cooling while maintaining desirable radiation characteristics. A parametric analysis demonstrates that optimizing the fin tilt angle results in an 8 % reduction in the resonant frequency, effectively miniaturizing the antenna. To further enhance array performance, complementary split ring resonator (CSRR) walls are introduced betwee
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