Radiation-Stealth Integrated Antenna Structure Based On FSR

This article proposes a radiation-stealth integrated antenna structure based on an FSR (Frequency Selective Rasorber) structure. When the antenna is operational, this structure functions as a normal radiator; however, when it is inactive, the entire system becomes a broadband absorber. Simulation results indicate that the structure exhibits a VSWR < 3 bandwidth spanning from 9.69 GHz to 10.63 GHz, with boresight radiation gains exceeding 5.4 dBic. In non-operational state, the antenna structure achieves broadband absorption across the frequency range of 4.8 GHz to 15.48 GHz.