Active Multifunctional Filter Design Using Carbon Nanotube Transistors

A VDVTA-based MISO active multifunctional filter has been designed and analyzed using carbon nanotube field-effect transistor. The filter is capable of realizing multiple operations such as lowpass, highpass, bandpass, bandreject, and allpass filter functions. The circuit is configured to employ 3 input voltages and generate 1 output voltage. The proposed configuration provides capability of electronic controllability filter parameters, such as corner frequency (ωc) and Q-factor via the external current of VDVTA. The presented work is realized in a 32-nm Standard CNFET Stanford model and is simulated using Hspice.