Abstract
A dual-polarized multifunctional reconfigurable band-notched absorber (MRBNA) based on Galinstan is presented in this paper. The proposed MRBNA comprises a liquid metal transmission/reflection switchable layer (LM-T/RSL) and a wideband band-notched absorber (BNA). The MRBNA represents a paradigm shift in adaptive electromagnetic (EM) solutions, offering unprecedented wideband switching capabilities between superior band-notched absorption and full-band reflection states. By harnessing the potential of LM-T/RSL and innovative polarization selection mechanisms, this design sets a new benchmark for advanced stealth systems. The impact of LM-T/RSL on transmission and reflection characteristics is investigated, followed by experimental investigation of fluid flow in microfluidic channels. Then, the structural conception of the MRBNA is examined, employing the equivalent circuit method (ECM) and surface current distributions for a better understanding of its operating mechanism. Finally, a prototype is fabricated and empirical validation is conducted to demonstrate the simulated results. Positioning it at the forefront, the seamless adaptability of the proposed MRBNA to changing EM conditions promises to revolutionize modern stealth operations.
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