Circuit for phase locked oscillators

Details Circuit for phase locked oscillators Circuit for phase locked oscillators

2008-10-31

2011-11-01

Kinkead, Arnold (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural oscillators controlled

C331S045000, C331S053000, C365S171000, C365S173000, C257S421000, C428S811000

Reexamination Certificate

active

08049567

ABSTRACT:
A circuit comprising a DC current source and at least two spin torque oscillators, the at least two spin torque oscillators being electrically coupled to each other and to the DC current source. A circuit comprising phase shifting means is connected in such a way as to cause a phase shift between current and voltage through the spin torque oscillators. An advantage is that the controlled phase shift significantly increases the tolerance for deviating anisotropy fields, which makes manufacturing of spin torque oscillator devices much more feasible in practice.

REFERENCES:
patent: 7678475 (2010-03-01), Slavin et al.
J. Grollier et al., “Synchronization of spintransfer oscillators driven by stimulated microwave currents”, Phys. Rev. B, 2006, 73, 060409-0604012.

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