Patent classifications
H
ELECTRICITY
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H03
ELECTRONIC CIRCUITRY
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H03H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
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11/00
Networks using active elements
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H03H11/04
Frequency selective two-port networks
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H03H11/0422
using transconductance amplifiers, e.g. gmC filters
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H03H11/0466
Filters combining transconductance amplifiers with other active elements, e.g. operational amplifiers, transistors, voltage conveyors
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