Voltage-dependent thin-film capacitor
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United States of America Patent
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Issued Date -
Sep 26, 2002
app pub date -
Apr 3, 2000
filing date -
Apr 3, 1999
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a passive ceramic component with a carrier substrate (1), a first and a second electrode (2, 6), and a ferroelectric dielectric (5). The electrodes (2, 6) and the dielectric (5) preferably comprise a multilayer structure with at least a first and a second layer. The capacitance value C of the capacitor can be varied through the application of a voltage to the electrodes (2, 6), owing to the field dependence of the dielectric constant .notlessthan..sub.r of the dielectric (5). Such components may be used in filter devices or in delay lines or as replacements for variable-capacitance diodes in the manufacture of voltage-controlled oscillators.
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