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US 2022/0336729 A1Published application
Interlayer Exchange Coupled Multiplier
AssigneeRedpine Signals, Inc.
InventorsVenkat MATTELA, Sanghamitra DEBROY, Santhosh SIVASUBRAMANI
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Abstract
A multiplier device for binary magnetic applied fields uses Interlayer Exchange Coupling (IEC) structure where two layers of ferromagnetic material are separated from each other by non-magnetic layers of electrically conductive material of atomic thickness, sufficient to generate anti-magnetic response in a magnetized layer. A plurality of regions on a top surface are activated with a magnetic field in a first direction for a 1 value and in an opposite direction for a 0 value, the multiplication result presented as magnetic field direction on a plurality of output ferromagnetic regions.
Claims20
An multiplier comprising:
- a continuous bottom layer of ferromagnetic material separated from a plurality of regions of ferromagnetic material positioned on a plane substantially parallel to the continuous bottom layer;
- a thin electrically conductive layer positioned between the continuous bottom layer and the plurality of regions of ferromagnetic material, the thin electrically conductive layer sufficient to induce a reciprocal anti-ferromagnetic response between one of the regions of ferromagnetic material to a corresponding coupled area of the continuous bottom layer of ferromagnetic material;
- the plurality of regions of ferromagnetic material arranged as a sparse rectangular array of ferromagnetic material regions in a first column, second column, third column, fourth column, and fifth column, the sparse rectangular array having a first row, second row, third row, fourth row, fifth row, sixth row, seventh row, eighth row, ninth row, and tenth row;
- the first row having an a0 input ferromagnetic region at the second column;
- the second row having a b0 input ferromagnetic region at the first column and an m0 output ferromagnetic region at the second column;
- the third row having a zero ferromagnetic region in the second and fourth columns and a one ferromagnetic region in the third column.
- the fourth row having a b0 input ferromagnetic region at the first column, m1 output ferromagnetic regions at the second column, third column, and fourth column, and a b1 input ferromagnetic region at the fifth column;
- the fifth row having an a1 input ferromagnetic region at the second column, a zero ferromagnetic region at the third column, and an a0 input ferromagnetic region at the fourth column;
- the sixth row having a b1 input ferromagnetic region at the first column, an m3 output ferromagnetic region at the second column, third column, and fourth column, and a b0 input ferromagnetic region at the fifth column;
- the seventh row having a zero ferromagnetic region at the second and fourth columns, and an m3 output ferromagnetic region at the third column;
- the eighth row having an a1 input ferromagnetic region at the second column and an m3 output ferromagnetic region at the third column;
- the ninth row having a b1 input ferromagnetic region at the first column, an m2 output ferromagnetic region at the second and third columns, and a one ferromagnetic region at the fourth column;
- the tenth row having a zero ferromagnetic region at the second column;
- and where the a0 input, the a1 input, the b0 input, and b1 input are activated with a “1” by application of a magnetic field oriented in a first direction and activated with a “0” by application of a magnetic field in a second direction oriented opposite from the first direction.
11 more elements
A ferromagnetic multiplier comprising:
- a continuous lower layer of ferromagnetic material;
- a thin conductive layer positioned adjacent to the continuous lower layer of ferromagnetic material;
- a plurality of ferromagnetic regions on a layer adjacent to the thin conductive layer, the plurality of ferromagnetic regions arranged in a sparse rectangular array having a first column, second column third column, fourth column, and fifth column, the sparse rectangular array also having a first row, a second row, a third row, a fourth row, a fifth row, a sixth row, a seventh row, an eighth row, a ninth row, and a tenth row;
- a multiplier first input having a low order bit input formed as a plurality of ferromagnetic regions in the second column first row and fourth column fifth row of the sparse rectangular array;
- the multiplier first input having a high order bit input formed as a plurality of ferromagnetic regions in the sparse rectangular array further comprising ferromagnetic regions in the second column fifth row and second column eighth row;
- a multiplier second input having a low order bit input formed as a plurality of ferromagnetic regions in the first column second row, first column fourth row, and fifth column sixth row of the sparse rectangular array;
- the multiplier second input having a high order bit input formed as a plurality of ferromagnetic regions in the sparse rectangular array further comprising ferromagnetic regions in the first column sixth row, first column ninth row, and fifth column fourth row;
- the multiplier having outputs:
- an m0 least significant output bit formed by a ferromagnetic region in the second column second row;
- an m1 output bit formed by ferromagnetic regions in at least one of:
- second column fourth row, third column fourth row, fourth column fourth row;
- an m2 output bit formed by a ferromagnetic region in at least one of:
- second column ninth row or third column ninth row;
- am m3 output bit formed by a ferromagnetic region in at least one of:
- second column sixth row, third column sixth, seventh, or eighth rows, or fourth column sixth row.
12 more elements
Dependencies are inferred from the claim text.