Wave transmission lines and networks – Coupling networks – Frequency domain filters utilizing only lumped parameters
Patent
1997-03-12
1999-05-18
Ham, Seungsook
Wave transmission lines and networks
Coupling networks
Frequency domain filters utilizing only lumped parameters
333 12, H03H7/01
Patent
active
059054174
ABSTRACT:
A passive cascaded low-pass and high-pass filter comprises a conductive ferrite block (100) for filtering out some and not others of the frequencies of a multi-frequency electrical signal, and a pair of electrical contacts (101) on the block for connecting the unfiltered signal to the block and connecting the filtered signal from the block. The filter characteristic depends upon the ferrite's stoichiometry, but is independent of the ferrite's geometry. Signal attenuation caused by the filter evenly across the whole frequency range can be varied by varying the stress between one or both contacts and the block, via various stress-inducing mechanisms (400, 500).
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Norte David A.
Yoon Woong K.
Ham Seungsook
Lucent Technologies - Inc.
Volejnicek David
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