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Smart Skin Antenna Structure (SSAS) was a multifunctional composite structure with the integration of airborne antenna into a composite aircraft structure.The embedded antenna of Broadband Smart Skin Antenna Structure (BSSAS), the planar log-spiral antenna, had broadband electromagnetic characteristics.The input impedance and voltage standing wave ratio (VSWR) remain essentially constant over a wide frequency range from 0.8GHz to 8GHz.