Ferroelectrics and ferromagnetics for noise isolation in...

Active solid-state devices (e.g. – transistors – solid-state diode – Responsive to non-electrical signal – Magnetic field

Reexamination Certificate

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C257S422000, C257S428000, C257S435000, C361S818000

Reexamination Certificate

active

07977758

ABSTRACT:
Disclosed are ferroelectric and ferromagnetic noise isolation structures that reduce electromagnetic interference and noise in integrated circuit devices and system architectures. Representative structures comprise two or more devices that are vertically disposed relative to one another, and a thin ferroelectric or ferromagnetic film layer disposed between the respective devices that isolates electromagnetic energy coupling from one device to another.

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Charles E. Kittel, Theory of ferromagnetic resonance absorption, vol. 73, 2, Jan 1948, pp. 155-161.
Ki Hyeon Kim, et al., “Integrated Noise Suppressor Using Soft Magnetic Films,” IEEE Transactions on Magnetics vol. 40, No. 4, Jul. 2004.
Bijoy Kuanr, et al., “Iron and Permalloy based magnetic monolithic tunable microwave devices,” Journal of Applied Physics, vol. 93, No. 10, May 15, 2003.
Leszek M. Malkinski, et al., “Microwave Absorption of Patterned Arrays of Nanosized Magnetic Stripes with Different Aspect Ratios,” Journal of Applied Physics, 101, 2007.

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