Magnetic filter

Details Magnetic filter Magnetic filter

2005-12-27

2005-12-27

Ledynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Magnetometers

C327S552000, C257S421000

Reexamination Certificate

active

06979998

ABSTRACT:
The invention includes a magnetic filter. The magnetic filter includes a magnetic transducer for generating a magnetic field in response to the plurality of information carrying signals. The magnetic filter further includes a magnetic tunnel junction. The magnetic tunnel junction can be tuned to switch states in response to selected frequencies of the magnetic field. The magnetic filter can further include a magnetic tunnel junction sensor for sensing the states of the magnetic tunnel junction.

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He, Yiping et al., Hybrid Magnetic Tunnel Juntion/Vertical Cavity Surface Emitting Laser Field Sensor Device, Nov. 2001, Electronic Letters, vol. 37, No. 24, all.
Reed, Daniel S., et al., Low Frequency Noise in Magnetic Tunnel Junctions, Jul. 2001, IEEE Transactions on Magnetics, vol. 37, No. 4, all.
Shimazawa, K. et al., Frequency Response of Common Lead and Shield Type Magnetic Tunneling Junction Head, Jul. 2001, IEEE Transactions on Magnetics, vol. 37, No. 4, all.
Lu Yu et al, observation of magnetic switching in submicronmagnetic-tunnel junctions at low frequency, journel of applied physics, american institue of physics, Apr. 15, 1999.
Bauer M et al, journal of applied physics, american institue of physics, Jan. 1, 2002.

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