High-frequency oscillator

Details High-frequency oscillator High-frequency oscillator

2008-02-07

2010-10-05

Chang, Joseph (Department: 2817)

Oscillators

With distributed parameter resonator

C428S212000, C257S421000, C324S237000, C331S187000

Reexamination Certificate

active

07808330

ABSTRACT:
A high-frequency oscillator includes a high-frequency oscillation element having a magnetization pinned layer whose magnetization direction is pinned substantially in one direction, an oscillation layer formed of a magnetic material which generates a high-frequency oscillation phenomenon when a current is supplied, an intermediate layer provided between the magnetization pinned layer and the oscillation layer, the intermediate layer having an insulation layer and current paths which pass through the insulation layer in a thickness direction, and a pair of electrodes which supply a current perpendicularly to a plane of a stacked film including the magnetization pinned layer, the intermediate layer and the oscillation layer.

REFERENCES:
patent: 5695864 (1997-12-01), Slonczewski
patent: 7126202 (2006-10-01), Huai et al.
patent: 2002-208744 (2002-07-01), None
patent: 2004-349966 (2004-12-01), None
patent: 2005-19570 (2005-01-01), None
patent: 2005-109499 (2005-04-01), None
patent: 2005-285936 (2005-10-01), None
Kiselev, S. I. et al., “Microwave Oscillations of a Nanomagnet Driven by a Spin-Polarized Current,” Nature, vol. 425, pp. 380-383, (Sep. 25, 2003).
Slonczewski, J. C., “Current-Driven Excitation of Magnetic Multilayers,” Journal of Magnetism and Magnetic Materials, vol. 159, pp. L1-L7, (1996).
Notice of Reasons for Rejection issued by the Japanese Patent Office in Japanese Patent Application No. 2005-314689, mailed Feb. 23, 2010.

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