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Due to the applications in meteorological broadcasts, radio navigation andunderwater communications, low-frequency(LF) receiving antennas have beenactively studied. However, because the frequency range of LF antenna is 30kHzto 300kHz, its electromagnetic wavelength is 1km to 10km, which makes LFelectromagnetic antennas difficult to be implemented in miniaturized orportable devices. This article presents a miniaturized LF magnetoelectric(ME)receiving antenna with an integrated DC magnetic bias. The antenna is based onthe magnetoelectric effect and operates by resonance at its mechanical resonantfrequency. Thus, compared with traditional LF wire antennas, the dimension ofME antenna is reduced significantly. Compared with prior art of ME antennaswhich do not have DC magnetic bias, higher performance can be achieved byintegrating the miniaturized DC magnetic bias. Compared with prior art of an MEantenna with bulky external DC magnetic bias, the ME antenna with an integratedDC magnetic bias significantly reduce its dimension. MagnetostrictiveTbDyFe2(Terfenol-D) and piezoelectric lead zirconate titanate(PZT) thin filmsare bonded together to form the 38x12x5.8mm3 ME receiving antenna. Four10x10x10mm3 Rb magnets are implemented to provide an optimal DC bias for theantenna. A maximum operation distance of 2.5m is demonstrated with the DCmagnetic field bias, 2.27 times of the maximum operation distance of theantenna without DC magnet field bias. The efficiency, gain and quality factorthe ME receiving antenna is also characterized. The miniaturized LF ME antennacould have potential applications in portable electronics, internet of thingsand underwater communications.

A Miniaturized Low Frequency (LF) Magnetoelectric Receiving Antenna with an Integrated DC Magnetic Bias