1. A Novel Method Design Multiplexer Quaternary with CNTFET

S. Rahmati; E. Farshidi; J. Ganji

Volume 8, Issue 1 , Winter and Spring 2020, , Pages 9-18


  Background and Objectives: In recent decades, due to the effect of the short channel, the use of CMOS transistors in the nanoscale has become a major concern. One option to deal with this issue is the use of nano-transistors. Methods: Using nano-transistors and multi-valued logic (MVL) can reduce the ...  Read More

2. Design of High Frequency Single and Double Gate Laterally-Contacted InGaAs/InAlAs HEMTs

Z. Kordrostami; S. Hamedi; F. Khalifeh

Volume 7, Issue 2 , Summer and Autumn 2019, , Pages 155-162


  Background and Objectives: High electron mobility transistors (HEMTs) are designed so that they are able to work at higher frequencies than conventional transistors and this has made them an attractive topic of research. Methods: Two developed designs of InGaAs/InAlAs high electron mobility transistors ...  Read More

3. A Novel Low-Power FPGA-based 1-1 MASH ΔΣ Time-to-Digital Converter Employing one Counter for both Stages

A. Mouri Zadeh Khaki; E. Farshidi; K. Ansari Asl

Volume 7, Issue 2 , Summer and Autumn 2019, , Pages 173-182


  Background and Objectives: Beside acceptable performance, power consumption and chip area are important issues in embedded systems that should be taken into consideration. Methods: In this paper, a novel continuous-time 1-1 MASH ∆∑ Time-to-digital converter (TDC) is presented. Since the proposed ...  Read More

4. Low Computational Complexity and High Computational Speed in Leading DCD ERLS Algorithm

F. Abdi; P. Amiri; M.H. Refan

Volume 7, Issue 1 , Winter and Spring 2019, , Pages 19-26


  Background and Objectives: Adaptive algorithm adjusts the system coefficients based on the measured data. This paper presents a dichotomous coordinate descent method to reduce the computational complexity and to improve the tracking ability based on the variable forgetting factor. Methods: Vedic mathematics ...  Read More

5. Improvement of Tunnel Field Effect Transistor Performance Using Auxiliary Gate and Retrograde Doping in the Channel

M. Karbalaei; D. Dideban; N. Moezi

Volume 7, Issue 1 , Winter and Spring 2019, , Pages 27-33


  Background and Objectives: In this work, a dual workfunction gate-source pocket-retrograde doping-tunnel field effect transistor (DWG SP RD-TFET) is proposed and investigated. Methods: The dual workfunction gate-source pocket-retrograde doping-tunnel field effect transistor is a Silicon-channel TFET ...  Read More

6. Room Temperature Methanol Sensor Based on Ferrite Cobalt (CoFe2O4) Porous Nanoparticles

P. Halvaee; M.S. Beigi

Volume 6, Issue 2 , Summer and Autumn 2018, , Pages 215-222


  Background and Objectives: In this work, porous nanoparticles of ferrite cobalt were prepared by dissolving CoCl2.6H2O and FeCl3 in ethylene glycol in a hydrothermal process. Using ethylene glycol instead of DI water as a solvent would cause to provide porous structure of ferrite cobalt. Methods: In ...  Read More

7. Image Registration Based on Sum of Square Difference Cost Function

J. Khosravi; Mohammad Shams Esfand Abadi; R. Ebrahimpour

Volume 6, Issue 2 , Summer and Autumn 2018, , Pages 273-281


  Background and Objectives: There are numerous applications for image registration (IR). The main purpose of the IR is to find a map between two different situation images. In this way, the main objective is to find this map to reconstruct the target image as optimum as possible. Methods: Needless to ...  Read More

8. Improvement the Efficiency of CIGS Thin Film Solar Cells by Changing the Doping of the Absorbent Layer and Adding the InAsP Layer

H. Firoozi; M. Imanieh

Volume 6, Issue 1 , Winter and Spring 2018, , Pages 7-13

  < p>Background and Objectives: In this article, the functionality of solar cells structure based on CuIn1-xGaxSe2 is investigated. This type of solar cell consists of different layers, namely, ZnO (TCO layer), Cd_S (Buffer layer), CIGS (Absorbent layer), and MO (Substrate layer). Two layers, Cd_S ...  Read More

9. A Numerical Optimization of an Efficient Double Junction InGaN/CIGS Solar Cell

M. Feli; F. Parandin

Volume 6, Issue 1 , Winter and Spring 2018, , Pages 53-58


  Background and Objectives: Solar cell is an electronic device which harvest photovoltaic effect and transform light energy to electricity. An efficient double junction InGaN/CIGS solar cell can be simulated using Silvaco ATLAS software. In this study, a thin CdS top cover layer is used as the anti-reflector ...  Read More

10. A Simple and Fast Method for Field Calibration of Triaxial Gyroscope by Using Accelerometer

S. Ranjbaran; A. Roudbari; S. Ebadollahi

Volume 6, Issue 1 , Winter and Spring 2018, , Pages 1-6


  Background and Objectives: Using field calibration methods without precision laboratory equipment, systematic faults of inertial sensors can be reduced and measurement accuracy can be increased. Methods: In this paper, a simple and fast method called improved least squares is used to find calibration ...  Read More