CNTFET VDGA based ultra-low power low voltage high frequency filter applications

Yıl 2024, Cilt: 39 Sayı: 3, 1555 - 1566, 20.05.2024

Şeyda Sunca , Mustafa Alçı

https://doi.org/10.17341/gazimmfd.1223428

Öz

With approaching the limit value, many problems have arisen in the scaling of MOSFET sizes. Alternative solutions have been investigated for many problems such as short channel effects and reduced gate control, which are caused by reducing the size of the MOSFET. Carbon Nanotube Field Effect Transistor (CNTFET) is considered as the most suitable alternative to replace MOSFET with its superior electrical and mechanical properties. In this study, simulation studies of Voltage Differencing Gain Amplifier structure were carried out using 32 nm CNTFET. In addition, a three-input single-output filter structure is presented with the CNTFET VDGA structure. The filter structure realized at ±0.3V low supply voltage and 1µA low bias current has a higher center frequency of 22.909 MHz compared to the filter structure realized with CMOS VDGA. In addition, the filter made with CNTFET VDGA structure has a low power consumption of 8.3412 µW.

Anahtar Kelimeler

: CNTFET, low voltage, low power, universal active element

CNTFET VDGA tabanlı ultra düşük güç düşük voltaj yüksek frekanslı filtre uygulamaları

Öz

MOSFET boyutlarının ölçeklendirilmesinde sınır değere yaklaşılmasıyla birlikte birçok problem ortaya çıkmıştır. MOSFET’in boyutlarının küçültülmesiyle ortaya çıkan kısa kanal etkileri ve azaltılmış geçit kontrolü gibi birçok problemler için alternatif çözüm yolları araştırılmıştır. Karbon Nanotüp Alan Etkili Transistör (CNTFET- Carbon Nanotubes Field Effect Transistors) üstün elektriksel ve mekaniksel özellikleri ile MOSFET’ in yerini alacak en uygun alternatif olarak düşünülmektedir. Bu çalışmada, 32 nm CNTFET kullanılarak Voltaj Farkı Alan Kazanç Kuvvetlendirici (VDGA-Voltage Differencing Gain Amplifier) yapısının benzetim çalışmaları yapılmıştır. Buna ek olarak CNTFET VDGA yapısı ile üç girişli tek çıkışlı filtre yapısı sunulmuştur. ±0.3V düşük besleme voltajında ve 1µA düşük kutuplama akımında gerçekleştirilen filtre yapısı, CMOS VDGA ile gerçekleştirilen filtre yapısına kıyasla 22,909 MHz gibi daha yüksek merkez frekansına sahiptir. Ayrıca CNTFET VDGA yapısıyla gerçekleştirilen filtre 8,3412 µW düşük güç tüketimine sahiptir.

Anahtar Kelimeler

CNTFET, VDGA, düşük voltaj, düşük güç, üniversal aktif eleman

Kaynakça

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