摘要：In this study a new topology realizing the biquad filtering functions based on only single
DVCCTA as active element is proposed which consists of four grounded passive elements too
and canonical in structure as it consists of two grounded capacitors. By applying only the single
current input signal at appropriate node, the proposed biquad realizes various types of four
voltage filtering responses, simultaneously, each at different node of the circuit. Thus, the
proposed filter is behaving as current input voltage output circuit and hence, called transimpedance-mode
(TIM) biquad filter. Besides, it enjoys with reasonable low power consumption
and low components sensitivities. Moreover, the center pole frequency (ω0) can be independent
tuned to quality factor (Q0) through biasing current control of active element. Moreover, the
PSPICE simulated results in 0.18ˇm CMOS technology are also shown in the study which can
verify the validity of the circuit.
