Dual-Band Acoustics Promoted Low Frequency Antenna

A dual-band bulk acoustic wave (BAW)-mediated multiferroic antenna is proposed, modeled and simulated, which is mainly composed of two multiferroic materials, namely, ZnO and FeGaB. As the devised antenna is implemented with acoustic resonance, the size of low frequency antenna can be reduced compared with conventional low frequency antenna. In this case, the entire length of antenna is 2000 μm and its thickness is about 20 μm. A two-dimensional antenna model is created using commercial software COMSOL MULTIPHYSICS based on finite element. As a result, the antenna has two frequency bands operating at 251MHz and 528MHz. The imulation results show that the antenna provides good resonance at the desired working bands, and the stress generated by the resonance is smoothly transferred from the piezoelectric layer to the magnetostrictive layer, realizing the conversion of electric-magnetic converting.