Yaser Mohammadi | Louisiana State University (original) (raw)
Uploads
Papers by Yaser Mohammadi
AIP Conference Proceedings, 2009
In This paper, a new large signal SPICE model for RTD is presented which includes large signal ca... more In This paper, a new large signal SPICE model for RTD is presented which includes large signal capacitances for the first time. Then the usefulness of the model is considered in design, simulation and characterization of a large signal oscillator, a RF amplifier and a frequency multiplier.
Journal of Circuits, Systems, and Computers, 2010
Memristor had been¯rst theorized nearly 40 years ago by Prof. Chua, as the fourth fundamental cir... more Memristor had been¯rst theorized nearly 40 years ago by Prof. Chua, as the fourth fundamental circuit element beside the three existing elements (Resistor, Capacitor and Inductor) but because no one has succeeded in building a memristor, it has long remained a theoretical element. Some months ago, Hewlett-Packard (hp) announced it created a memristor using a TiO 2 =TiO 2ÀX structure. In this paper, the characteristics, structures and relations for the invented hp's memristor are brie°y reviewed and then two general SPICE models for the charge-controlled and°ux-controlled memristors are introduced for the¯rst time. By adjusting the model parameters to the hp's memristor characteristics some circuit properties of the device are studied and then two important memristor applications as the memory cell in a nonvolatile-RAM structure and as the synapse in an arti¯cial neural network are studied. By utilizing the introduced models and designing the appropriate circuits for two most important applications; a nonvolatile memory structure and a programmable logic gate, circuit simulations are done and the results are presented. . Downloaded from www.worldscientific.com by LOUISIANA STATE UNIVERSITY TROY H MIDDLETON LIBRARY -SERIALS DEPARTMENT on 11/29/12. For personal use only.
AIP Conference Proceedings, 2009
In This paper, a new large signal SPICE model for RTD is presented which includes large signal ca... more In This paper, a new large signal SPICE model for RTD is presented which includes large signal capacitances for the first time. Then the usefulness of the model is considered in design, simulation and characterization of a large signal oscillator, a RF amplifier and a frequency multiplier.
Journal of Circuits, Systems, and Computers, 2010
Memristor had been¯rst theorized nearly 40 years ago by Prof. Chua, as the fourth fundamental cir... more Memristor had been¯rst theorized nearly 40 years ago by Prof. Chua, as the fourth fundamental circuit element beside the three existing elements (Resistor, Capacitor and Inductor) but because no one has succeeded in building a memristor, it has long remained a theoretical element. Some months ago, Hewlett-Packard (hp) announced it created a memristor using a TiO 2 =TiO 2ÀX structure. In this paper, the characteristics, structures and relations for the invented hp's memristor are brie°y reviewed and then two general SPICE models for the charge-controlled and°ux-controlled memristors are introduced for the¯rst time. By adjusting the model parameters to the hp's memristor characteristics some circuit properties of the device are studied and then two important memristor applications as the memory cell in a nonvolatile-RAM structure and as the synapse in an arti¯cial neural network are studied. By utilizing the introduced models and designing the appropriate circuits for two most important applications; a nonvolatile memory structure and a programmable logic gate, circuit simulations are done and the results are presented. . Downloaded from www.worldscientific.com by LOUISIANA STATE UNIVERSITY TROY H MIDDLETON LIBRARY -SERIALS DEPARTMENT on 11/29/12. For personal use only.