Wave transmission lines and networks – Coupling networks – Electromechanical filter
Reexamination Certificate
2011-08-23
2011-08-23
Pascal, Robert (Department: 2817)
Wave transmission lines and networks
Coupling networks
Electromechanical filter
C333S204000
Reexamination Certificate
active
08004374
ABSTRACT:
A microwave bandstop filter having a magnetic strip formed over dielectric material. The magnetic resonant frequency is controlled by an induced magnetic anisotropy in the magnetic strip of the microwave bandstop filter. The magnetic anisotropy field is induced by an anisotropic surface texture formed on the surface of the magnetic strip itself, or formed on an underlying layer. Alternatively, the anisotropic surface texture could be formed on both an underlying layer and on the magnetic strip itself. This induced magnetic anisotropy field allows the resonant frequency of the microwave filter to be controlled over a wide frequency range and make high frequency operation possible without reliance on the application of an externally applied magnetic field.
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Carey Matthew Joseph
Childress Jeffrey Robinson
Maat Stefan
Hitachi Global Storage Technologies - Netherlands B.V.
Pascal Robert
Wong Alan
Zilka-Kotab, PC
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