Tunable ferro-electric filter

Details Tunable ferro-electric filter Tunable ferro-electric filter

2005-04-26

2005-04-26

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S205000, C333S235000

Reexamination Certificate

active

06885263

ABSTRACT:
The present invention quantifies and reduces losses in tunable bandpass filters having ferro-electric capacitors. Given a required insertion loss and the quality factor of a resonator, the geometric losses resulting from a particular topology for the ferro-electric capacitor and the metal losses are accounted for to quantify the allowable ferro-electric losses.

REFERENCES:
patent: 5908811 (1999-06-01), Das
patent: 6026311 (2000-02-01), Willemsen Cortes et al.
patent: 6049726 (2000-04-01), Gruenwald et al.
patent: 6094588 (2000-07-01), Adam
patent: 6097263 (2000-08-01), Mueller et al.
patent: 6108191 (2000-08-01), Bruchhaus et al.

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