Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode
Reexamination Certificate
2007-05-29
2007-05-29
Tran, Long K. (Department: 2818)
Active solid-state devices (e.g., transistors, solid-state diode
Field effect device
Having insulated electrode
C257S379000, C365S189090, C365S196000, C365S207000, C327S053000, C327S056000, C330S288000, C330S300000
Reexamination Certificate
active
11307469
ABSTRACT:
A voltage-controlled amplifier for a signal processing system includes an input voltage reception end, a first voltage-to-current converter, a reference current generator, a gain adjustment circuit, a first current mirror, and an output circuit. The voltage-controlled amplifier adjusts a gain according to a variable control voltage, so as to transfer an input voltage to an output voltage according to the adjusted gain. When adjusting the gain, the present invention changes only an alternating current part of the input voltage, and can decrease noise, the production cost, and increase integration degree.
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Hsu Winston
Princeton Technology Corporation
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