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Low frequency communication systems offer significant potential in portableelectronics and internet of things (IoT) applications due to the lowpropagation loss and long transmission range. However, because the dimension ofelectrical antenna is comparable to one quarter wavelength of theelectromagnetic wave that it transmits and receives, currently a gap existsbetween LF communication systems and IoT, as IoT generally implementminiaturized electrical antennas with a small wavelength at a high frequencywhile traditional LF electrical antennas are too bulky. In this paper, wepresent an LF magnetoelectric mechanical transmitting and receiving antennapair to significantly miniaturize the dimension of LF antennas. As theoperation principle of the magnetoelectric mechanical antenna pair is based onmechanical resonance, its dimension is reduced by four orders of magnitudecompared with an electrical antenna counterpart. The transmitting and receivingantennas are the same in structure and dimensions: they are both composed ofmagnetostrictive Terfenol-D and piezoelectric PZT laminate, and theirdimensions are both 38x12x8.2mm3. Both the transmitting and receiving antennasare integrated with DC magnetic bias to improve its performance. Antenna pairperformance measurement demonstrates that a maximum operation distance of 9m isdemonstrated with DC magnetic bias, while maximum operation distance without DCmagnetic bias is 4m, which is reduced by 56%. The LF magnetoelectric mechanicalantenna pair may be a promising candidate for the portable electronics and IoTapplications.

Transceiving signals by mechanical resonance: A low frequency (LF) magnetoelectric mechanical antenna pair with integrated DC magnetic bias