Spin modulator and spin-transfer torque oscillators having phase tuning means and modulation method thereof
AssigneeKorea Advanced Institute of Science and Technology
InventorsChulSoon Park, Inn Yeal Oh
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Abstract
A spin modulator with phase tuning means which comprises, a spin array which consists of m×n matrix spin-transfer torque oscillators, a selection control means which selectively operates the spin-transfer torque oscillators according to an operation condition of the spin array, and a phase tuning array which includes m×n matrix phase tuning means, wherein the m×n matrix phase tuning means tune a phase synchronization operation of the spin-transfer torque oscillators according to the operation condition.
Claims5
A spin modulator having a phase tuning means, comprising:
- a spin array including m×n matrix spin-transfer torque oscillators where m and n are integer greater than 1;
- a selection control means configured to selectively operate the spin-transfer torque oscillators according to a modulation of input data;
- a phase tuning array including m×n matrix phase tuning means for one-to-one (1:1) pairing with the spin-transfer torque oscillators to synchronize a phase of an output signal of each of the spin-transfer torque oscillators, the synchronization being performed by applying tuning values according to an operational condition;
- and
- a lookup table which stores the tuning values which are applied to each of the m×n matrix phase tuning means for an output power of the spin-transfer torque oscillators according to the operational condition,
- wherein the m×n matrix phase tuning means are connected to the spin-transfer torque oscillators with 1:1 pairs and the m×n matrix phase tuning means are variable capacitors which vary capacitance according to the tuning values from the lookup table.
A spin oscillator with a phase tuning array, comprising:
- a spin array including m×n matrix spin-transfer torque oscillators where m and n are integer greater than 1;
- a power supply means configured to apply power to the spin-transfer torque oscillators;
- a phase tuning array including m×n matrix phase tuning means to synchronize the spin-transfer torque oscillators each other;
- and
- a lookup table configured to store tuning values which are selectively applied to the phase tuning array for a maximum output power of the spin-transfer torque oscillators according to an operational condition,
- wherein the phase tuning array consists of variable capacitors which are connected to the spin-transfer torque oscillators with 1:1 pairs.
Dependencies are inferred from the claim text.