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The low-voltage design is an effective method to decrease power consumption in a circuit. In this paper, a compact CMOS active inductor circuit is proposed. The circuit is based on the gyrator-C approach with both transconductance stages realized by MOS transistors. The proposed inductor is suitable for low voltage operation as it has minimum number of transistors and none of them suffers from body...
MOSFET drain current second-order nonlinearity has a significant impact on the linearity of current regulated CMOS active inductors. It tends to compress MOSFET transconductance (gm) by generating excess dc current (IEX) in the channel, which is a function of incoming input signal amplitude. This generated excess dc current can change the original dc operating point of the current regulated CMOS...
Implementation of voltage controlled active inductors on standard CMOS technology for 2 GHz is described. The circuit is based on a gyrator implemented with a 5 MOSFETs feedback circuit, including the DC bias. Theoretical expressions were derived with a simple but enough accurate MOSFET model. The inductor value is controlled by an auxiliary bias voltage Vtune. An MMIC with a CMOS standard technology...
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