Magnetoelectric antenna arrays

A magnetoelectric (ME) antenna, comprising:

• at least two resonators electronically connected in series or in parallel, each of said resonators having a structure of
• a magnetostrictive layer;
• a top ground electrode layer;
• a piezoelectric layer;
• a bottom electrode layer;
• and
• a substrate layer;
• wherein said top ground electrode layer is deposited on said piezoelectric layer and is patterned with a shaped aperture;
• the magnetostrictive layer is also deposited on said piezoelectric layer through the shaped aperture;
• the piezoelectric layer is deposited on the bottom electrode layer which is deposited on the substrate layer, said substrate layer is configured with an air cavity below, so that the bottom electrode layer area of the resonator is suspended from the substrate layer;
• thereby when in use the magnetostrictive layer and the piezoelectric layer form a heterostructure on the bottom electrode layer, leading to magnetization oscillation that radiates electromagnetic waves by an induced acoustic resonance frequency or converting the electromagnetic waves into a piezoelectric voltage output.

A magnetoelectric ME antenna, comprising:

• at least two resonators electronically connected in series or in parallel, each of said resonators having a structure of
• a magnetostrictive layer;
• a top ground electrode layer;
• a piezoelectric layer;
• a bottom electrode layer;
• a substrate layer;
• and
• a plurality of Acoustic Mirror layers comprising a plurality of alternating layers of low acoustic impedance materials having an acoustic impedance value smaller than 50 g/cm2-sec×105 and high acoustic impedance materials having an acoustic impedance value higher than 50 g/cm2-sec×105;
• wherein said top ground electrode layer is deposited on said piezoelectric layer and is patterned with a shaped aperture;
• the magnetostrictive layer is also deposited on said piezoelectric layer through the shaped aperture;
• the piezoelectric layer is deposited on the bottom electrode layer which is deposited on the Acoustic Mirror layers;
• thereby when in use the magnetostrictive layer and the piezoelectric layer form a heterostructure on the bottom electrode layer, leading to magnetization oscillation that radiates electromagnetic waves by an induced acoustic resonance frequency or converting the electromagnetic waves into a piezoelectric voltage output, and said acoustic mirror layer prevents energy leakage into the substrate layer.