ii ACKNOWLEDGEMENTS It has been a great privilege to be a graduate student in the Electrical and Computer Engineering department at the Texas Tech University and work closely with my advisor Prof. Dr. Kwong S. Chao. His keen insight into system and integrated circuit design is the key factor in the success of this research. I would also like to thank Prof. Dr. Sunanda Mitra, for her willingness...

SIGMA Adequate and understandable MOSFET models are presently a must for the design of integrated circuits. Most of the existing MOSFET models, however, are too complex andor do not comply with basic principles of physics. We propose here the use of ACM model, a very simple transistor model, together with a set of easily implemented experiments to determine the ACM parameters for the training o...

Continuous advancements in integrated circuit design and the constant development of a diverse set of computing applications, paved the way for versatile mobile devices that we use on daily basis. The dependency of these devices on battery as the main power source imposed strict constraints on the energy consumption of applications that run on these mobile devices. In this paper, we present a c...

This paper covers the evaluation and fine-tuning of different values of genetic operator’s parameters in the process of optimizing the designs of the integrated circuits. We investigated the interdependence of various values of these parameters in the use over the set of test-bench circuits, as well as their influence on the quality of the final solution and the convergence speed. Due to the in...

Very large scale integration (VLSI) circuit comprises of integrated circuit (IC) with transistors in a single chip, widely used in many sophisticated electronic devices. In our paper, we proposed VLSI circuit design by implementing satisfiability problem in Hopfield neural network as circuit verification technique. We restrict our logic construction to 2-Satisfiability (2-SAT) and 3Satisfiabili...

An intelligent design method of double screen frequency selective surfaces (FSSs) is addressed in this paper. The employed unit cell is composed of two metallic screens, which are printed on both sides of a substrate. The presented non-trial-and-error approach is investigated based on the separate design of each screen. With the help of some physical intuition and an equivalent circuit model, i...

in this paper a novel design of all-optical half-subtractor based on nonlinear directional coupler is proposed. by using four waveguides and appropriately adjusting the refractive indices and selecting the proper length of waveguides, halfsubtractor function can be obtained. the operation of this function is simulated by rsoft cad-layout (beamprop) simulator. the simulation results confirm the ...

due to the importance of material classification issue in grinding circuits, the ‎performance of primary and secondary hydrocyclones in grinding circuit of esfordi ‎phosphate plant was investigated by sampling within 7 days from feed, overflow, and ‎underflow‎ of these hydrocyclones. at first, the d80 of above streams samples were calculated by ‎the screening analysis. the results showed ‎that ...