Multiferroic antenna/sensor
First Claim
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.
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Accused Products
Abstract
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.
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Citations
19 Claims
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1. A multiferroic sensor comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An aircraft comprising:
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a skin; and an antenna including a multiferroic sensor, the multiferroic sensor comprising an array including more than four multiferroic stacks configured to form the antenna to receive an incident signal, the more four multiferroic stacks being connected at least one of in series or in a parallel, each multiferroric stack residing on an outside of the skin,each multiferroic stack comprising 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 sensor 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 more than four multiferroic stacks connected in parallel. - View Dependent Claims (14, 15, 16, 17, 18)
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19. An antenna comrprising:
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a multiferroic sensor, the multiferroic sensor comprising an array including more than four multiferroic stacks configured to form the atenna to received an incident signal, the more than four multiferroic stacks being connected at least one of in series or parallel, each multiferroric stack residing on an outside of the skin, the multiferroic stack comprising 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 sensor comprising the electrical voltage amplified proportional to a total number of multiple connected multiferroic layer-pairs in the multiferroic stack, 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 more than four multiferroic stacks connected in parallel; a receiver, the receiver amplifying and processing the multiferroic sensor output; and a matching circuit connected between the multiferroic sensor and the receiver, the matching circuit matching an impedance of the multiferroic sensor to an impedance of the receiver.
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Specification