Abstract
Carbon nanotube field-effect transistors (CNFETs) have emerged as practicable replacements to conventional MOSFETs for contemporary analog/digital design. This work highlights a current-mode tunable universal filter (CMUF), which can provide band-reject, low-, band-, and high-pass filtering functions, by making use of a new CNFET-based second-generation current-controlled conveyor (CCCII) and grounded capacitors only. The circuit operates on lower power supply and bias currents, and uses smaller capacitors as compared to CMOS counterparts. Corner frequencies (for LPF and HPF) and center frequency (for BPF) have been obtained in the GHz range. Tunability of filter outputs with respect to bias current has been demonstrated. This CMUF is suitable for operation in 868–915 MHz, and 2.4–5 GHz bands used by Zigbee and Bluetooth, respectively. Noise and Monte Carlo analyses have also been performed. The performance of both the CCCII and the CMUF is verified with extensive SPICE simulations.
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Sharma, J., Ansari, M.S., Kundu, S. (2018). Tunable Universal Filter in ±0.5 V 32 nm CNFET for ISM 2.4 GHz Bluetooth/Zigbee Transceivers. In: Singh, R., Choudhury, S., Gehlot, A. (eds) Intelligent Communication, Control and Devices. Advances in Intelligent Systems and Computing, vol 624. Springer, Singapore. https://doi.org/10.1007/978-981-10-5903-2_3
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DOI: https://doi.org/10.1007/978-981-10-5903-2_3
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