Abstract
A new low-voltage Bipolar Complementary Metal Oxide Semiconductor (BiCMOS) triode transconductor with improved linearity suitable for very-high frequency continuous-time filters is proposed. The transconductance is tunable with a control voltage. Improved linearity is achieved using a translinear cross-coupled circuit that suppresses the major cause of nonlinearity. The output resistance of the transconductor is compensated, and the resulting output resistance can be fine-tuned by means of a separate voltage. The transconductor has a large bandwidth due to its parasitic poles that are at extremely high frequencies. The performance of the transconductor is demonstrated by simulation results.
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