Active solid-state devices (e.g. – transistors – solid-state diode – Voltage variable capacitance device
Reexamination Certificate
2006-07-25
2006-07-25
Pham, Hoai (Department: 2891)
Active solid-state devices (e.g., transistors, solid-state diode
Voltage variable capacitance device
C361S292000
Reexamination Certificate
active
07081663
ABSTRACT:
A semiconductor junction varactor utilizes gate enhancement for enabling the varactor to achieve a high ratio of maximum capacitance to minimum capacitance. The varactor has a gate region (131or181) divided into multiple portions of differing zero-point threshold voltages for enabling the varactor capacitance to vary relatively gradually with a control voltage applied to the varactor.
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Farahani Dana
Meetin Ronald J.
National Semiconductor Corporation
Pham Hoai
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