Multiferroic antenna/sensor

摘要

A multiferroic antenna and sensor where the sensor includes a multiferroic stack of multiple connected multiferroic layer-pairs, each multiferroic layer-pair comprising an alternating layer of a magnetostrictive material and a piezoelectric material bonded together enabling a high signal sensitivity, a magnetic field of an incident signal causing mechanical strain in the magnetostrictive material layers that strains adjacent piezoelectric material layers producing an electrical voltage in each multiferroic layer-pair proportional to the incident signal. An output of the multiferroic stack comprises the electrical voltage amplified proportional to a total number of multiple connected multiferroic layer-pairs in the multiferroic stack.

主权项

1. A multiferroic sensor comprising:
an array comprising more than four multiferroic stacks configured as an antenna to receive an incident signal, the more than four multiferroic stacks being connected at least one of in series or in parallel, wherein each multiferroic stack comprises a multiferroic stack of multiple connected multiferroic layer-pairs, each multiferroic layer-pair comprising an alternating layer of a magnetostrictive material and a piezoelectric material bonded together enabling a high signal sensitivity, a magnetic field of an incident signal causing mechanical strain in the magnetostrictive material layers that strains adjacent piezoelectric material layers producing an electrical voltage in each multiferroic layer-pair proportional to the incident signal, wherein an output of the multiferroic stack comprises the electrical voltage amplified proportional to a total number of multiple connected multiferroic layer-pairs in the multiferroic stack; and wherein when the more than four multiferroic stacks are connected in series an amount of voltage delivered by the array is proportional to a number of the more than four multiferroic stacks connected in series, and wherein when the more than four multiferroic stacks are connected in parallel an amount of current delivered by the array is proportional to a number of the multiferroic stacks connected in parallel.