Compact K-Band Current Mode Tunable Active Only Bandpass Filter Using 32nm CNTFET-Based MOCCCII

Abstract

A low-power and compact carbon nanotube field-effect transistor (CNTFET)-based [Formula: see text]-band electronically tunable band-pass filter (BPF) is presented. The filter is designed using second-generation multiple-output current-controlled current conveyor (MOCCCII). The presented active only current-mode BPF employs three MOCCCIIs and two CNTFETs as capacitors. This BPF can be tuned by varying the parasitic resistance of MOCCCIIs via the control current. The designed current-mode tunable BPF is simulated in an advanced design system (ADS) using the Stanford CNTFET model with the extension of noise and manufacturing process variation. The filter achieves a 21–23[Formula: see text]GHz tuning frequency range, with a minimum noise figure of about 11.09[Formula: see text]dB. The 1-dB compression point and input-referenced third-order intercept point are −19.28 and −8.4[Formula: see text]dBm, respectively. This compact filter consumes only 145.7[Formula: see text][Formula: see text][Formula: see text]W power at ± 0.5[Formula: see text]V supply voltage at room temperature. The temperature analysis shows good thermal stability. The Monte Carlo analysis demonstrates the good process variation stability of the filter. The suggested BPF can be thought of as the first fully active BPF that is a candidate for [Formula: see text]-band communication applications with future advances in the fabrication process for CNTFET.