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Journal of Electrical and Computer Engineering
Volume 2010, Article ID 463925, 4 pages
Research Article

New RTD-Based General Threshold Gate Topologies and Application to Three-Input XOR Logic Gates

1Science and Research Branch, Islamic Azad University, Tehran, Iran
2Electrical and Computer Faculty, Shahid Beheshti University, Tehran, Iran

Received 4 August 2009; Accepted 10 November 2009

Academic Editor: Paul D. Franzon

Copyright © 2010 S. M. Mirhoseini et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper presents two new general threshold gate (GTG) structures which are based on the monostable-bistable element (MOBILE) as their main part. These new GTGs eliminate an RTD from the structure compared to old structures and lead to less elements count and better performance in terms of power consumption, maximum frequency, and power-delay product (PDP). In the paper also two new single gate three-input XOR logic gates based on the old GTGs and two ones based on the new GTGs are presented and simulated in HSPICE simulator.