طراحی یک سلول جدید ورودی انتشارگیت در فناوری آتوماتای سلولی نقطه کوانتومی

محورهای موضوعی : سیستم های الکترونیک دیجیتال

حمیدرضا صدر ارحامی ¹ ( دانشکده مهندسی کامپیوتر- واحد نجف‌آباد، دانشگاه آزاد اسلامی، نجف‌آباد، ایران )
سید محمد علی زنجانی ² ( مرکز تحقیقات ریزشبکه‌های هوشمند- واحد نجف‌آباد، دانشگاه آزاد اسلامی، نجف‌آباد، ایران )
مهدی دولتشاهی ³ ( دانشکده مهندسی برق- واحد نجف‌‌آباد، دانشگاه آزاد اسلامی، نجف‌‌آباد، ایران )
بهرنگ برکتین ⁴ ( مرکز تحقیقات کلان داده- واحد نجف‌آباد، دانشگاه آزاد اسلامی، نجف‌آباد، ایران )

تاریخ دریافت : 1401/04/09 تاریخ پذیرش : 1401/08/08 تاریخ انتشار : 1401/08/08

کلید واژه: فناوری نانو, توان پایین, قطبش, آتوماتای سلولی نقطه کوانتومی, ورودی انتشارگیت,

چکیده مقاله :

آتوماتای سلولی نقطه کوانتومی (QCA) یک فناوری جدید با سرعت بالا، مصرف توان کم، چگالی بالا و پیچیدگی پایین نسبت به فناوری‌های قدیمی مانند نیم‌رسانای اکسید-فلز مکمل (CMOS) است. از طرفی، روش ورودی انتشارگیت (GDI)، یک روش موفق در سامانه‌‌‌های کم‌مصرف است. این روش باعث کاهش پیچیدگی، کاهش مساحت و کاهش میزان مصرف انرژی در مدارهای طراحی‌‌شده با این روش است. این روش، اجرای طیف گسترده‌‌ای از توابع منطقی پیچیده را تنها با استفاده از دو ترانزیستور به‌‌عنوان بلوک اصلی، امکان‌‌پذیر می‌‌کند. در این مقاله، بلوک GDI مبتنی بر QCA تنها با 11 سلول پیشنهاد شده که به‌‌عنوان واحد طراحی استاندارد، قادر به اجرای توابع اساسی مانند AND، OR، NOT، BUFFER، MUX و XOR برای پیاده‌‌سازی مدارهای دیجیتال است. نتایج شبیه‌‌سازیِ توابع، توسط نرم‌افزار QCADesigner در فناوری 18 نانومتر، نشان ‌‌دهنده عملکرد بهتر سلول هم‌‌سطح پیشنهادی است؛ به‌‌نحوی که سلول پیشنهادی، 1 سیکل ساعت تاخیر برای اجرای عملکردها دارد. همچنین تحلیل میزان مصرف انرژی و توان مصرفی مدارهای طراحی‌‌شده توسط نرم‌افزار QCADesigner انجام شده است. 31 درصد کاهش در تعداد سلول‌‌ها، 50 درصد کاهش در سطح و 17 درصد کاهش در اتلاف انرژی کل از مزایای طرح پیشنهادی نسبت به طرح‌های پیشین است.

چکیده انگلیسی:

Quantum-dot cellular automata (QCA) is a modern technology, which has higher speed, lower power consumption, higher density, and lower complexity than conventional technologies, such as CMOS. Moreover, the gate diffusion input (GDI) technique has been successful in reducing complexity, area, and energy consumption in low-power circuit designs. In this technique, a wide range of complex logic functions can be implemented using only two transistors as the main block. In this study, a QCA-based GDI block is proposed using only 11 cells as a standard design unit that can be used to implement basic functions such as AND, OR, MUX, BUFFER, NOT and XOR in digital circuits. QCADesigner simulations of the functions in 18 nm technology indicate the superior performance of the proposed block with only one clock cycle delay in performing the operations. Moreover, the power consumption analysis of the designed circuits is performed using QCADesigner. The advantages of the proposed circuit compared to previous designs are 31% reduction in cell count, 50% smaller surface area, and 17% reduction in total energy loss.

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