Smart Switch Metamaterials for Multiband Radio Frequency Antennas
作者： Paul J. Wolcott , Christopher D. Hopkins , Lanlin Zhang , Marcelo J. Dapino
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摘要: We investigate metal–matrix composite metamaterials with embedded electrical switches made of shape memory nickel–titanium (Ni–Ti) for use in broadband radio frequency (RF) antennas. Experiments show that a Ni–Ti ribbon can form an contact opens and closes depending on the phase being austenite or martensite. Finite element modeling thermal gradients illustrates change within ribbon. Ultrasonic additive manufacturing (UAM), solid-state process, was utilized embedding switch aluminum matrix. The matrix must have structural-grade strength load-carrying antennas; thus, mechanical testing conducted to quantify longitudinal tensile, transverse shear UAM Reconfiguration using proven monopole RF antenna producing operating shift from 270 185 MHz when is connected. A planar microstrip line w...
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