Mirza Tariq Beg

• National Islamic University

In this article, a Schottky barrier β‐Ga2O3 MOSFET is proposed. It shows improvements in drain saturation current, Ion/Ioff ratio, transconductance, and off‐state breakdown voltage. The proposed design, which implements the Schottky barrier source and drain contacts, has led to reduced on‐state resistance (Ron), reduced forward voltage drops, faste...

In the present investigation we have demonstrated the effect of different substrates (Si, SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> , Al <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O <sub xmlns:mml="http://www.w3.org/1998/Math...

This work presents an evanescent wave-based U-shaped plastic optical fiber sensor. The effect of bend-induced material deformation on numerical aperture (N.A) and V-number has been thoroughly investigated. With sufficiently smaller bend radius, the numerical aperture of a U-bent fiber decreases toward zero near the inner curvature of the bending. T...

This article compares the performance of U and coil-shaped fiber optic sensors for the detection of fluoride in water. Low-cost and simple-to-use U-shape and coil-shape evanescent wave fiber optic sensors have been designed and developed for in-situ detection of fluoride in water. The sensitivities of coil and U-shaped sensors are found to be 0.141...

Evanescent wave optical fibre sensors have attracted a lot of attention for the detection of chemical species due to their sensitivity, selectivity, and repeatability. In addition, plastic optical fibre sensors are inexpensive, simple to fabricate, and not only act as sensors, but the same fibre can also be used to transport sensor signals. The fib...

In this paper, sensitivity enhancement in U-shaped evanescent wave fiber optic sensor has been reported. The overall effect of surface roughness, material deformation and probe geometry on the sensitivity of U-shaped fiber optic evanescent wave fiber optic sensor has been investigated. The experimental results of the developed sensors demonstrate t...

Binary Decision Diagrams (BDDs) are an important data structure for the design of digital circuits using VLSI CAD tools. The ordering of variables affects the total number of nodes and path length in the BDDs. Finding a good variable ordering is an optimization problem and previously many optimization approaches have been implemented for BDDs in a...

Currently, the wireless communication industry is experiencing rapid advances in the smooth migration and upgrading of technology. Because of this, communication systems operating in multiple frequency bands are of interest, and multiband circuits play an important role in the design of compact and low-cost multiband communication systems. A multib...

In this paper, we have designed a U-bent fiber optic sensor based on evanescent wave absorption for iron detection and quantification in the iron tablet. A detailed investigation of the impact of the bend-induced material deformation on the refractive index losses, numerical aperture, light propagation inside core and absorption coefficient has bee...

The introduction of new technology in the wireless communication industry increases the number of frequency bands in the communication environment. Therefore, a communication system capable of functioning over several frequency bands, known as a multiband communication system , is required. In addition, multiband communication systems support tec...

In this paper, the design and performance analysis of GaSb/Si-based Negative Capacitance (NC) Tunnel Field Effect Transistor (TFET) are comparatively analyzed at both device and circuit levels. The simultaneous incorporation of the GaSb (low energy bandgap material) at the source region and ferroelectric material at the MOS gate stack in the propos...

Nowadays, digital data transmission is the most common method applied in communication systems. Transmission of data without error is needed from the source device to the destination device, odd/even parity generators/checkers is applied to ensure this. Due to better characteristics as compared to CMOS technology, carbon nanotube technology is one...

In this paper a coplanar waveguide feed (CPW) monopole antenna backed with artificial magnetic conductor (AMC) structure for efficient radiation has been presented for off-body wearable applications. A split ring resonator (SRR) having thiner and longer lines to produce higher inductance and six splits with smaller gaps for high capacitance have be...

The use of mmWaves for achieving 5G networks is increasingly being seen as a necessity due to the vastly improved bandwidth and data rates at these frequencies. These waves suffer from severe attenuation and their use may, however, be restricted, in the immediate future, to short-range networks, such as personal area networks (IEEE 802.11ad) or veh...

In this paper, a compact GFET-based rectifier integrated with a monopole antenna is proposed for wireless energy harvesting applications. The GFET increases impedance bandwidth of the rectifying circuit, thus covering a range of 22.5–27.5 GHz. The sensing antenna is a triangular monopole with truncated corners for realizing circular polarization at...

A compact dual-band out of phase difference power divider having microstrip transmission capability has been proposed in this paper. To realize the proposed power divider a dual-band quarter-wave transmission line (DBQWTL) with closed-form design equations have also been proposed. In order to validate the proposed approach, a power divider has been...

A novel dual band branch line coupler (BLC) has been proposed, designed, implemented, and analyzed in this paper. A dual band 4 X 4 Butler matrix (BM) has also been developed by employing the proposed BLC. To realize the proposed BLC, PI and modified PI-shaped transmission lines (TLs) as dual band TLs, with the complete derivation of the design equ...

Binary Decision Diagrams or BDD are data structure used to represent single and multi-output digital circuits. BDD mapped adder circuits are used to represent different adder functions in a digital system. Optimization of adder circuits are done by optimizing the corresponding BDDs. In this work the optimization of BDD Mapped adder circuits are pro...

This book is a collection of the best research papers presented at the 8th International Conference on Innovations in Electronics and Communication Engineering at Guru Nanak Institutions Hyderabad, India. Featuring contributions by researchers, technocrats and experts, the book covers various areas of communication engineering, like signal processi...

This paper presents a graphene field effect transistor (FET) based rectenna with substrate-integrated waveguide (SIW) broadband approach for RF energy harvesting application. The proposed structure of integrated rectenna consists of a graphene FET rectifier and an SIW antenna operating in the (S11 < −10 dB) range of 29–46 GHz. The peak gain of the...

In this article, a circularly polarized small‐sized deca‐band monopole antenna is proposed and investigated. The proposed antenna consists of gun‐shaped monopole radiator and split‐ring resonator (SRR) array‐loaded partial ground plane present on the top and bottom sides of the substrate, respectively. The antenna is excited by a microstrip line fe...

In this paper, a triple band rectenna for Wi-Fi (2.4 GHz), Wi-MAX (3.5 GHz) and WLAN (5.2 GHz) application frequencies is proposed. The rectenna consists of a square-shaped circularly polarized antenna and a voltage doubler rectifier linked through a matching circuitry. A Schottky diode based voltage doubler rectifier and three stubs are used for t...

This study proposes a new hepta‐band antenna that consists of an inductive ground plane and slots loaded patch for the multiband body‐worn scenario. The phase distribution is optimised by considering a 7 × 7 array of periodic square patches on the metallic ground‐backed substrate in such a way that resonant modes of patch slots interact with the re...

When a large number of cognitive users (CUs) are competing for the spectral resource sharing with different parameters, it is a challenging job to decide a scheduling criterion to be followed and to solve the problem of idle channel allocation. This paper proposed a novel two levels Hierarchical Fuzzy Systems based cooperative spectrum sensing (lev...

This paper presents the design and development of a multiband rectenna for ambient RF energy harvesting. The proposed rectifying antenna consists of fractal-based geometry to obtain GSM 0.9 GHz (0.8–1.2 GHz), GSM 1.8 GHz (1.6–2.1 GHz), WLAN 2.5 GHz (2.2–2.8 GHz), Wi-MAX 3.5 GHz (3.1–4.0 GHz), WLAN 5.5 GHz (5.3–6.4 GHz) and 7.35 GHz (7.0–7.8 GHz) re...

The identification of the speakers from the continuous speech requires manifold algorithms and mathematical formulation at each integrated work stage. In this paper, a multi-feature adaptive hybrid model is provided to process the real time uninterrupted speech which provide 98.8% accuracy rate. To remove the speech impurities, wavelet decompositio...

In this paper, a dual‐band branch line coupler (BLC) for Long Term Evolution (LTE) 0.7 GHz and LTE 2.6 GHz frequencies is designed and developed. A dual‐band quarter wave transmission line (DBQWTL) capable to perform dual band operation for frequency ratio >3 is also proposed. The dual band BLC is designed by replacing the quarter wave transmission...

In this paper a new dual band Wilkinson power divider (WPD) with extended band ratio has been proposed. The proposed WPD has been developed by replacing each transmission line (TL) of the single band WPD with the dual band TL. In order to validate the proposed technique, a dual band WPD for Long Term Evolution (LTE)0.7GHz and Wireless Local Area Ne...

In this paper, a novel dual band branch line coupler (BLC) for designing a dual band Butler matrix (BM) has been proposed. To realize the proposed BLC, a unique dual band impedance transformer (DBIT) with a derivation of closed form design equations, capable of performing a dual band operation for a traditional transmission line (TL) of any electri...

A hexa-band branch line coupler (BLC) and Wilkinson power divider (WPD) for long term evolution (LTE) 0.7GHz, LTE 1.7GHz, LTE 2.6GHz, 3.9GHz, public safety band (PSB) 4.9GHz, and wireless local area network (WLAN) 5.8GHz frequencies have been proposed, designed, implemented and analyzed in this paper. To realize the proposed BLC and WPD a hexa-band...

A dual band quadrature branch line coupler (BLC) with wide frequency ratio has been proposed in this paper. A dual band quarter wave (λ/4) transmission line (TL) structure with wide frequency ratio operation has also been presented here with closed-form design equations. An analysis for the BLC’s circuit parameters variations versus frequency ratio...

This paper presents a compact dual band rectenna consisting of an open ended microstrip line antenna useful for sensing UMTS and RFID microwave signals. The designed antenna has a Sierpinski fractal geometry loaded on the ground surface and resonates at 2.1 GHz and 5.8 GHz. In the proposed structure, suppression of higher order harmonics is realize...

In this article, a compact single fed hexa‐band circularly polarized (CP) monopole antenna using split ring resonators (SRRs) on the partial ground plane is designed and experimentally investigated. The loaded SRR elements generate multiple circularly polarized bands along with a reduction in antenna size. The multiband can be controlled by changin...

A new dual band 4 × 4 butler matrix (BM) without crossover has been proposed, implemented and analyzed in this paper. A new dual band 45° phase shifter has also been proposed. The dual band BM, dual band 3 dB quadrature branch line coupler (BLC) and dual band 45° phase shifter have been designed using Keysight Technologies’ Advanced Design System (...

The paper presents a multiband dual polarized rectenna for RF energy harvesting in C-band application range. The receiving antenna of the designed rectenna is consisting of a truncated corner square patch loaded with several circular slots, L-slots and U-slot. A proximity coupled feeding arrangement is used for obtaining a wide impedance bandwidth...

Free space optical communication (FSO) proves to be a very effective and efficient technology for wireless communication. This work basically deals with the designing of FSO systems. Further, a comparative study has been made to ascertain which modulation technique proves better for communication. This paper investigates the performance of ASK and...

The performance of resource allocation algorithms for wireless networks is measured by various parameters. One of the parameters is the 'fairness of allocation' which is a widely studied topic. A number of metrics have been defined in literature for measuring fairness. Jain's Index is the most popularly used metric. A survey of these metrics and is...

To attenuate the channel fading effects, a spectrum sensing policy for coordinating a cooperative sensing is proposed by adding a Hopping Sequence (HS) module to the detectors based on a fuzzy logic system (FLS). A significant effect on the spectrum efficiency is the ability of a secondary user (SU) to utilize a frequency slot for transmission in a...

as a breakthrough technology under 3GPP, LTE has attracted attention worldwide. Main features include enhanced peak data rates, lower delay, increased cell edge throughput. For an LTE system, serving a large number of users requires an efficient RRA algorithm which has not been standardized for the system and is still an open end for development. R...

The screening effect plays an important role when CNTs are placed in clustered and also have large effects in the calculation of field enhancement factor of clustered CNTs. Isolated CNT will have a greater field enhancement factor than the field enhancement factor cluster of CNTs because of screening effect. The screening effect is a function of di...

High-power lasers typically form a multidisciplinary technological area laced with innumerable challenges in its realization as a practical system. The prime amongst them are infrared gas laser sources, such as carbon dioxide gas dynamic laser, hydrogen fluoride, deuterium fluoride laser, and chemical oxygen iodine laser. Each of these laser system...

A significant impact on the spectrum efficiency and quality of service (QoS) of a secondary user (SU) is the ability to capture a frequency slot for transmission in an idle channel. Hence, the SU needs to sense the related spectrum in order to classify a licensed frequency band as occupied or vacant. Spectrum sensing can be a demanding task for a s...

Technological advances and market developments in the wireless communication area have been astonishing during the last decade and the mobile communication sector will continue to be one of the most dynamic technological drivers within comparative industries. This paper extend our previous work for detection and discrimination signals, and deals wi...

One of the most challenging topics for next-generation wireless networks is the process of discrimination among signals, since many of wireless technologies overlap each other and build a heterogeneous topology. The conventional signal's detection methods like Matched Filter detector, Energy Detector and Feature Detector cannot give us an indicatio...

In this paper, the proposed flip-flop reduces power consumption by reducing the clock switching power that was wasted otherwise. Unlike many other gated flip-flops, the proposed gated flip-flop has state retention property to save power and to switch circuit between idle and active modes smoothly. The feedback path is also improved in the proposed...

In this paper a multiband dielectric resonator with array of defect at the ground plane is proposed. Filter is constructed by placing high-quality factor 〖TE〗_01δ mode dielectric resonators on the microstripline. The focus is on the design process includes choosing optimum geometry of a dielectric resonator so that high Q can be achieved. This is d...

This work considered the differentiation and discrimination between GSM and WiMAX signals in noisy environment. Our new discriminator (Bouncy Detector (BD)) is an extension of the work of Hop Rate Detector (HRD) and it is exploited for differentiation and discrimination process between GSM and Wi- MAX signals. HRD was basically designed to detect a...

Double Edge-Triggered Flip-Flop (DETFF) allows maintaining a constant throughput while operating at only half the clock frequency as compared to Single Edge-Triggered Flip-Flop. This paper proposes a high performance and low power dual edge triggered flip-flop. In this work four previously published dual edge triggered flip-flops (DETFFs) are compa...

layer is key of wireless network. TDMA approach is based on Maximum utilization of frequency spectrum. Packet error is also depending on frequency spectrum. The demands of WLAN Devices day by day increases exponentially and it operates in the specific narrow spectrum of frequency bands and also increase communication parameters programmed and contr...

Enhancement the Performance of MANET (Mobile Ad-hoc Network) using spatial diversity. Spatial diversity implemented using cooperative transmission technique in Medium access control (MAC) layer level protocol. In noisy environment limit the network performance like coverage area, limit number of node, degrade packet transmission rate, increase pack...

With the advent of next generation mobile data networks, ubiquitous, high-speed, mobile Internet access has become a reality. However, the concurrent development of multiple mobile data technologies has led to the existence of overlapping, mutually incompatible mobile data networks. So that this paper extending the work of Bouncing Detector that us...

With the advent of next generation mobile data networks, ubiquitous, high-speed, mobile Internet access has become a reality. However, the concurrent development of multiple mobile data technologies has led to the existence of overlapping, mutually incompatible mobile data networks. This paper extending the work of Bouncing Detector that used in de...

Cognitive Radio (CR) is a technique used to improve the utilization of the radio spectrum. It is a software controlled radio that endeavours to utilize the unused frequency spectrum at any time. The main challenge in cognitive radio is spectrum sensing. To provide a better understanding of CR, this article presents a survey and open research issues...

In this paper, a comparative analysis of existing architectures for flip-flop along with the proposed design is made. The comparison is done on the basis of power, delay, PDP and transistor count. Due to continuous increase in integration of transistors and growing needs of portable equipments, low power design is of prime importance. All simulatio...

In this paper, we compared previously published static Double-Edge Triggered clocked Storage Elements or double-edge-triggered flip-flops (DETFFs) for their delay, power dissipation and power delay product in 65nm CMOS technology. For each DETFF, the optimal delay, power consumption and power-delay product are determined as the primary figures of m...

Wireless sensor networks consist of sensor nodes with sensing and communication capabilities. As sensor nodes are generally battery-powered devices, the critical aspects to face concern how to reduce the energy consumption of nodes, so that the network life time can be increased to reasonable times. The efficiency of space-time block code-encoded (...

This paper proposed a low power, Double-edge-triggered flip-flop design in 65nm CMOS technology. The proposed DETFF is having fewer clocked transistors than earlier conventional designs. The DETFF is simulated with different clock frequencies ranging from 400MHz to 2GHz. Simulation results show least delay, lowest power dissipation than older desig...

A Wireless sensor network (WSN) has important applications such as remote ecological monitoring and target tracking. This has been enabled by the availability, particularly in recent years, of sensors that are smaller in size and smart. These sensors are equipped with wireless interfaces with which they can communicate with one another to form a ne...

Cooperative multiple-input multiple-output (MIMO) based communication architecture are used for energy efficient communication in wireless sensor networks. In this paper, we investigate cooperative MIMO for fixed and variable rates. We propose energy efficient routing based on cooperative MIMO. In wireless sensors networks, the nodes are operating...

This paper represents a novel method of evaluation of band width of MEMS based embedded gas sensor by using the concept of adding white Noise. In this paper we are providing the details of MEMS based embedded gas sensor and adding a concept to evaluate narrowed bandwidth of MEMS based gas sensor. Novel technique includes the concept of amp litude d...

In this paper, we compared various different techniques of previously published Single Edge Triggered Flip Flops (SET FFs). Flip Flops are most essential elements in the design of sequential circuits. We did the comparison for their performance and power dissipation and have also compared the transistor count of each Flip Flop.

This paper represents an enhancement in the performance of wireless monitoring of smart gas sensor. In this paper we are proposing a novel design of a wireless monitoring gas sensor whose response has been drawn using latest available technologies. It consists of an 8 bit micro controller with a 16 bit ADC on chip and a 433MHz transceiver. The sens...

Smart gas sensor for miniaturization of E-nose is the need of the fast developing decade. Some researchers have developed very sensitive integrated sensing elements for gas detection. The polymer coated micro bridges in high density arrays can detect ppm level concentrations of vapors using on chip integrated read out techniques. The demonstrated t...

Precision measurement of iodine concentration is an essential diagnostic tool in the development and optimization of chemical oxygen-iodine laser (COIL) system. A simple technique based on absorption spectroscopy has been developed and the absorption cell assembly was interfaced with the data acquisition and control system (DACS) for monitoring the...

The composition of various gas effluents and their flow parameters viz. flow rate, pressure and Mach number are very crucial in determining the output of high power infrared gas lasers. PC based real time gas Flow Control and Analysis (FCA) System which is the heart of the high power infrared gas lasers such as CO2 Gas Dynamic Laser (10.6m), Hydrog...

Estimation of communication overhead and transfer delay in a distributed computing networks play important roles in designing a load balancing strategy. There is a need for prediction of maximum value of communication overhead and transfer delay for the effective implementation of load balancing strategy on the distributed computing network. This p...