Design of a Tunable 4th Order OTA-C Band-Pass Filter for Use in Front-End of ADC

Mohsen Ghaemmaghami; Shahbaz Reyhani

Volume 2, Issue 2 , July 2023, , Pages 152-157


  This article presents a tunable fourth-order band-pass filter that is designed using an operational trans-conductance amplifier (OTA), which can be used as an anti-aliasing filter (AAF) in the front-end of an analog-to-digital converter (ADC). It is necessary to use a suitable filter to prevent unwanted ...  Read More

Performance Analysis of a Steep-Slope Bi-channel GaSb-GaAs Extended Source Tunnel Field Effect Transistor with Enhanced Band-to-Band Tunneling Current

Zahra Ahangari

Volume 2, Issue 2 , July 2023, , Pages 206-213


  This paper presents a comprehensive investigation of the electrical properties of a heterojunction tunnel field effect transistor with enhanced electrical tunneling current. The proposed device structure incorporates an extended source region and two parallel channels positioned above and below the source ...  Read More

Improving Stochastic Computing Fault-Tolerance: A Case Study on Discrete Wavelet Transform

Shabnam Sadeghi; Ali Mahani

Volume 2, Issue 1 , January 2023, , Pages 11-18


  The stochastic computing (SC) method is a low-cost alternative to conventional binary computing that processes digital data in the form of pseudo-random bit-streams in which bit-flip errors have a trivial effect on the signal final value because of the highly redundant encoding format of this method. ...  Read More

Smart AI-based Video Encoding for Fixed Background Video Streaming Applications

Mohammadreza Ghafari; Abdollah Amirkhani; Elyas Rashno; Shirin Ghanbari

Volume 2, Issue 1 , January 2023, , Pages 37-44


  This paper is an extension of our previous research on presenting a novel Gaussian Mixture-based (MOG2) Video Coding for CCTVs. The aim of this paper is to optimize the MOG2 algorithm used for foreground-background separation in video streaming. In fact, our previous study showed that traditional video ...  Read More

Investigating the Effect of Geometric Design Parameters on the Mutual Inductance Between Two Similar Planar Spiral Coils With Inner and Outer Diameter Limits

Ata Ollah Mirzaei; Amir Musa Abazari; Hadi Tavakkoli

Volume 2, Issue 1 , January 2023, , Pages 70-74


  Nowadays, planar spiral coils are widely used in different applications. Mutual inductance of two adjacent coils, is one of the critical operating principles in near-field wireless power and data transmission systems, significantly impacting their performance. Hence, in this study, the mutual inductance ...  Read More

A Feedforward Active Gate Voltage Control Method for SiC MOSFET Driving

Hamidreza Ghorbani; Jose Luis Romeral Martinez

Volume 2, Issue 1 , January 2023, , Pages 87-94


  A new active gate drive for Silicon carbide (SiC) metal–oxide–semiconductor field-effect transistor (MOSFET) is proposed in this paper. The SiC MOSFET as an attractive replacement for insulated gate bipolar transistor (IGBT) has been regarded in many high power density converters. The proposed ...  Read More

Design of Low-Power Approximate Logarithmic Multipliers with Improved Accuracy

Mojtaba Arab Nezhad; Ali Mahani

Volume 2, Issue 1 , January 2023, , Pages 95-102


  Approximate computing is considered a promising way to design high-performance and low-power arithmetic units recently. This paper proposes an energy-efficient logarithmic multiplier for error-tolerant applications. The proposed multiplier uses a novel technique to calculate the powers of two products ...  Read More

RTWSM: Real-Time Ad Hoc Wireless Sensor System Monitoring of Local Air Particle Pollution

Reza Ghanavati; Yousef Seifi Kavian; Abdolnabi Kosarian

Volume 1, Issue 2 , July 2022, , Pages 112-120


  The ever-increasing threat of air pollution as a serious health hazard throughout the world requires measuring prior to devising a structured solution. Air quality monitoring systems measure the amount of particulate matter such as particles and hazardous gases in the air. Information is required on ...  Read More

Investigating the Effects of Phosphorene Nanotubes (PNTs)-on-Gold Substrates on the Enhancements of the Sensitivity of SPR Biosensors

Amir Davami; Mohammad Hadi Shahrokh Abadi

Volume 1, Issue 2 , July 2022, , Pages 169-174


  Surface plasmon resonance (SPR) sensors have been widely considered for their sensitivity, accuracy, and appropriate response speed. This article simulates and analyzes the effects of phosphorene nanotubes (PNTs) layer with various diameters and rolling directions on the structure of SPR biosensor in ...  Read More

Design of Tunable Low-Power Band-Stop Filter for Elimination of 50 Hz Power-Line Noise

Amirreza Solaymanpour; Shahbaz Reyhani

Volume 1, Issue 2 , July 2022, , Pages 197-202


  The electrocardiogram is affected by various noises and one of the most important of which is 50 Hz power-line noise. On the other hand, it is necessary to use a battery in the portable device and so it requires the use of low power consumption circuits. Therefore, one of the challenges ahead when designing ...  Read More

A Novel 2-D BWA-MEM FPGA Accelerator for Short-Read Mapping of the Whole Human Genome

Mahdi Taheri; Ali Mahani

Volume 1, Issue 2 , July 2022, , Pages 203-210


  The mapping of DNA subsequences to a known reference genome, referred to as “short-read mapping”, is essential for next-generation sequencing. Hundreds of millions of short reads need to be aligned to a tremendously long reference sequence, making short-read mapping very time consuming. Day ...  Read More

A Fourth-order MASH DDSM for Accurate Fractional Frequency Synthesizers

Seyed Ali Sadatnoori

Volume 1, Issue 2 , July 2022, , Pages 211-220


  The output of a Digital Delta-Sigma Modulator (DDSM) is always a periodic signal and the input is constant. A hybrid DDSM is a premiere to its conventional counterpart for having a potential speed, by the choice of its smaller bus. This paper offers an implementation for multi-stage noise shaping (MASH) ...  Read More

Compact All-Optical Encoder Based on Silicon Photonic Crystal Structure

Mohsen Makvandi; Mohammad Javad Maleki; Mohammad Soroosh

Volume 1, Issue 1 , January 2022, , Pages 1-7


  In this paper, a photonic crystal structure composed of the silicon rods is proposed for an all-optical 4*2 encoder. Four input ports are connected to two outputs port via the cross-connections. Different radii of rods as defects are placed in the cross-connection region for coupling the optical waves ...  Read More

A Novel Design for an All-Optical Half Adder Using Linear Defects in Photonic Crystal Microstructure

Saleh Naghizade; Hamed Saghaei

Volume 1, Issue 1 , January 2022, , Pages 8-13


  This paper reports a new optical half-adder design using linear defects in a photonic crystal (PhC) structure. The half adder's proper design obviates the need to increase the input signal's intensity for the nonlinear optical Kerr effect's appearance, which leads to the diversion of the incoming light ...  Read More

Improved Laser Beams-Based Security Fence to Protect Borders

Rahim Ildarabadi; Zohrah Keramat

Volume 1, Issue 1 , January 2022, , Pages 50-58


  In this paper, the procedure for the protection of borders-based security fences improved using laser beams. Laser beams can be used to protect the border of large departments, large agencies, large universities, and large companies that have a large yard with several-kilometre erecting walls based on ...  Read More

A High-Performance MEMRISTOR-Based Smith-Waterman DNA Sequence Alignment Using FPNI Structure

Mahdi Taheri; Hamed Zandevakili; Ali Mahani

Volume 1, Issue 1 , January 2022, , Pages 59-68


  It is crucial to detect potential overlaps between any pair of the input reads and a reference genome in genome sequencing, but it takes an excessive amount of time, especially for ultra-long reads. Even though lots of acceleration designs are proposed for different sequencing methods, several crucial ...  Read More

A Novel Energy-Efficient Weighted Multi-Level Clustering Protocol

Ebrahim Farahmand; Ali Mahani

Volume 1, Issue 1 , January 2022, , Pages 69-78


  Wireless sensor networks (WSNs) consist of a large number of sensor nodes that allow users to accurately monitor a remote environment by aggregating the data from the individual nodes. These networks require robust and energy-efficient protocols that are improved reliability and lifetime of WSNs. Clustering ...  Read More

A Fault-Resistant Architecture for AES S-box Architecture

Mahdi Taheri; Saeideh Sheikhpour; Mohammad Saeed Ansari; Ali Mahani

Volume 1, Issue 1 , January 2022, , Pages 86-92


  This paper introduces a high-Speed fault-resistant hardware implementation for the S-box of AES cryptographic algorithm, called HFS-box. A deep pipelining for S-box at the gate level is proposed. In addition, in HFS-box a new Dual Modular Redundancy based (DMR-based) countermeasure is exploited for fault ...  Read More