The progressive shrinking of MOS dimensions confronts critical issues while designing low power consuming computational devices. The Single Electron Technology is one of the emerging technological solutions to cope up with the scaling challenges and support Moore’s law. Apart from the miniaturization, another concern is the energy efficiency of the designed circuit. Use of reversible logic in place

The distributed modulated wideband converter (DMWC) is a kind of sub-Nyquist sampling system which randomly moves the sparse wideband signal spectrum to the baseband to realize low-speed sampling. DMWC regards each sensor node as a sampling channel and combines compressed sensing technology with a broadband cooperative spectrum sensing network. However, DMWC contains phase and transmission attenuation

In this paper, ANN speed and flux controller for feedback linearization control (FLC) IM drive with nonlinear flux observers are proposed to achieve an accurate and fast dynamic response over a wide operating range. Because of the nonlinearity in IM, a linear PI controller with direct field oriented control (DFOC) IM drive, gives the poor performance, longer convergence time and limited disturbance

Cognitive radio technology is a solution to the spectrum scarcity problem that exists in today’s wireless networks. It provides spectrum conscious paradigm. However, these wireless systems impose eccentric challenges because of dynamic spectrum availability and diverse quality of service requirements. This paper investigates the performance of the adaptive cognitive system in multi-user and multi-channel

In this paper, a digital pulse width modulation (PWM)-based boundary control (BC) for boost converter is proposed. Compared to existing BC methods for boost converter, the proposed method utilizes the exact feedback linearization model and employs PWM technique to realize a fixed switching frequency and a low sampling rate simultaneously. Firstly, based on the linearized model of boost converter, we

In this manuscript, the impact of dielectric pocket on analog/radio-frequency (RF) performances of SOI-TFET is investigated. The inclusion of a dielectric pocket to SOI-TFET has been found to have great potential in eliminating the ambipolarity when Tunnel FET is biased at a higher negative gate voltage. With 2-D numerical simulations, it is demonstrated that inclusion of a dielectric pocket on partially

The impact of environmental degradation and the energy crisis, countries are vigorously developing renewable power generation technology. Among renewable energy sources, wind energy is a clean, convenient, and easy to access, which have become the priority nowadays. The doubly-fed induction generators (DFIG) are widely used in modern wind power plants because of their robustness in variable speed and

A device-to-device (D2D) communication permits wireless devices to communicate mutually without network assistance. It promises to enhancement in spectral and network efficiency in the next-generation networks. A D2D communication needs device discovery, which is considered as a primary task. It represents the geographic coordinates of the wireless devices in a cellular network. If the device discovery

In this paper, a multi-parametric analysis modelling for an ultra-wideband (UWB) antenna using artificial neural networks is proposed to predict both the UWB impedance bandwidth and multi-band notch frequencies. Two different neural models are implemented and tested using eight different algorithms. Neural model with two hidden layers having testing mean square error as 27.51 KHz proved to be efficient

In this paper, we investigate the secrecy performance of an uplink-downlink power domain non-orthogonal multiple access (PD-NOMA) system with imperfect successive interference cancellation (SIC) in physical layer security (PLS). In the proposed system, two source users (SUs) communicate with two destination users (DUs) with the help of a cluster of multi-relay nodes using the decode-and-forward (DF)

This paper develops a mathematic model to calculate the power losses and efficiency for an onboard three-level brushless synchronous generator (TLBLSG) which consists of pilot exciter (PE), main exciter (ME), and main generator (MG). A back-iteration algorithm which combines an analytical model of the MG stator loading with a three-phase diode bridge rectifier (TPDBR) and a capacitor, an equivalent

This paper investigates the solution to an optimization problem to minimize the total transmission power at the transmitter in a cooperative non-orthogonal multiple access (NOMA) system with simultaneous wireless information and power transfer (SWIPT) and an energy-harvesting user. First, we formulate the optimization problem to obtain the minimum transmission power at the transmitter under the constraints

With the aggressive scaling of integrated circuit technology, parametric estimation is a critical task for designers who looked for solutions to the challenges of some Nanoscale CMOS parameters. This paper presented the prediction of primary parameters of CMOS transistor for 16 nm to 10 nm process nodes using both of Bisquare Weights (BW) method and a novel recursive least squares (RLS) parameter estimation

An interleaved frequency control soft switching converter is studied for solar power or fuel cell power applications. The proposed circuit topology contains two parallel current-fed circuit cells with interleaved pulse-width modulation operation. Thus, the ripple currents at input and output terminals are decreased. In each circuit cell, the proposed current-fed dc-dc converter includes boost circuit

Energy harvesting (EH) is an eminent solution to perpetuate the lifetime of energy-constrained relay nodes in wireless sensor networks (WSNs). This paper considers a multi-hop amplify-and-forward (AF) network in which relay nodes with EH capability harvest energy inherent in the source transmitted radio frequency (RF) signal and use the harvested energy for signal transmission. Based on the time switching

This paper presents a 4-bit, 2–2 multi-stage noise shaping (MASH) delta-sigma modulator (DSM) fabricated using a 0.18 µm complementary metal oxide semiconductor (CMOS) process. The DSM was designed using a cascade-of-integrators with a feedforward (CIFF) structure. The first integrator was designed to reduce the loading effect of the system’s front-end circuit using a switched-resistor integrator instead

In this article, asymmetrical mirror-imaged monopole antenna comprises a rectangular patch with tuneable stub and supported with modified ground structure (MGS) is investigated. The proposed antenna is characterised for dual band dual polarised (DBDP) radiations and can operate at 2.45 GHz for Wi-Fi and WLAN systems (2.4–2.485 GHz) and 5.45 GHz for WLAN band (WLAN band: 5.2–5.8 GHz) with the corresponding

Present article exhibits the design of a third-order compact parallel-coupled line bandpass filter at 5.25 GHz having asymmetric perturbations to suppress the second harmonic. Initially, the effects of compactness on filter characteristics have been studied by synthesising the distributed filter network into its equivalent circuit model. The design has been initiated by computing the unit cell model

Worldwide Interoperability for Microwave Access (WiMAX), based on IEEE 802.16, provides first-mile wireless access for broadband users and is capable of satisfying the Quality of Service (QoS) requirements of voice, video and data traffic (triple-play services). This paper proposes two WiMAX hybrid schedulers, developed by integration of homogeneous schedulers, for providing QoS to triple-play services

Detection and localisation of contacts using sensor array play a significant role in the area of array signal processing. In this paper, a new beam-forming analysis for broad-banded quadratic frequency modulated (QFM) signals using generalised time–frequency transform (GTFT) is presented by extending the conventional fractional Fourier transform (FrFT). As FrFT is constrained to the analysis of linear

This paper proposes a 4:1 Multiplexer (MUX) designed using proposed Dual Chirality High-Speed Noise Immune Domino Logic (DCHSNIDL) technique for designing lower delay noise immune domino logic circuits in Carbon Nanotube Field Effect Transistors (CNTFETs) technology. Dynamic power consumption, speed and noise immunity of the circuit are improved by changing the threshold voltage of the CNTFETs. The

This paper presents an effective fault diagnostic and tolerant method for an open-gate fault of a three-phase inverter. The induction motor (IM) drive system is controlled by a speed sensorless indirect rotor field-oriented control (IRFOC). The proposed diagnostic method requires low computation to detect open-gate faults. This method uses a simple direct current technique based on the measured motor

This paper presents a new expression for the capacitance model based on ligament efficiency. The parallel plate capacitance is the first component derived based on the percentage of ligament efficiency and the second component which is fringing field capacitance is the combination of both existing Yang’s fringing field developed by the perforations and Meji’s capacitance model developed for fringing

In this work, a low radar cross-section (RCS) dual-band with one band circularly polarized (CP) slot antenna consisting of an L-shaped metallic strip along with a combination of Split Ring Resonator (SRR) and complementary SRR (CSRR) is proposed. In the dual-band, one wideband operation is obtained by creating a wide slot in the ground plane of the antenna and a narrow band is achieved by loading the

Hierarchical architecture, in combination with static structure, is a productive approach to Wireless Sensor Networks (WSNs) scalability as well as efficiency. Sensor nodes, a dual-layer framework, are extensively explored for several scenarios. This paper demonstrates the proposed novel clustering methodology representing it as the Minimum Weight Low Energy Adaptive Clustering Hierarchy (MW-LEACH)

A modified fault-tolerant voltage source inverter fed induction motor drive to maintain normal operation during open-circuit or short-circuit of power devices is proposed. The proposed inverter topology consists of a single capacitor at dc-link to eliminate the voltage balancing issue in conventional fault-tolerant topology and a boost converter at the front end of inverter to operate the drive in

In this paper a new soft switching bidirectional dc-dc converter with high conversion ratio is proposed. In the proposed converter, soft switching condition is provided with only one auxiliary switch for both directions, which simplifies the structure of the converter. The switching in boost mode is under ZCS condition and in buck mode is under ZVS condition. In the proposed converter, all diodes turn

The existing modulation classification method using instantaneous features is poor for low SNRs, and the high-order cumulant features-based modulation recognition algorithm is only applicable to some types of communication modulation signals. To overcome these problems, we propose a mixed features-based modulation recognition algorithm, which refines instantaneous features and high-order cumulant feature

Equalization is one of the most important algorithms to improve the Bit-Error-Rate (BER) performance in communication systems. In general, equalization can be classified into two categories: linear and non-linear equalization. The linear equalizers include Zero Forcing (ZF), and Minimum Mean Square Error (MMSE) equalizers. The non-linear equalizers include ZF, and MMSE equalizers that are based on

In order to counteract the main lobe multi-false target jamming of radar, a blind source separation jamming suppression method based on channel ratio function is proposed. The cross-polarized auxiliary antenna is used to expand the receiving channel, and the blind signal processing method is used to separate the jamming from the target echo. This method utilizes the statistical characteristics of channel

In this paper, a grid-connected power conversion topology is developed to convert a DC power from the renewable energy into a high-quality AC power. This grid-connected power conversion topology consists of an asymmetric diode-clamped multi-level inverter (DCT-MLI) and a dual-output DC-DC power converter. The asymmetric DCT-MLI includes two diode-clamped arms, two DC capacitors, and a filter inductor

Dedicated hardware realisation of ‘Discrete Wavelet Transform’ (DWT) is highly demanded for real-time multimedia operations in any handheld gadgets, as DWT is a popular transform domain mathematical tool widely employed for many applications. Several DWT techniques exist in the literature assisting the software based DWT realizations which are inappropriate for any real-time operation. There also exists

A wideband voltage-controlled oscillator (VCO) with coupling reduction and small VCO gain ( Kvco) variation has been fabricated for multi-standard RF transceivers. A high quality factor 8-shaped inductor is adopted to reduce the magnetic coupling between inductors and optimize the phase noise of the VCO. Electromagnetic simulations of magnetic coupling are carried out between an octagonal inductor

A low spur frequency synthesizer is proposed based on the frequency-hopping spread spectrum which is employed on the control voltage of the voltage-controlled oscillator. A spur reduction circuit is inserted between the phase-frequency detector and charge pump to randomly shift the spur to higher frequencies to suppress the reference spur. In order to achieve this, the proposed technique uses the time

A New Controller for Boost DC–DC Converters based on a Novel Sliding Surface. International Journal of Electronics. Accepted .

Quantum-Dot Cellular Automata (QCA), which has very high speed and very low area and power consumption, is one of the proposed nanotechnologies to design digital electronic circuits. Phase-locked loops (PLL) and delay-locked loops (DLL) are two important blocks in transceiver circuit design. The phase-frequency detector (PFD) which measures the phase and frequency differences of two signals, is one

In this paper, a miniaturized band-notched Printed Log Periodic Dipole Array (PLPDA) is designed with fractal dipole for UWB Communication. The miniaturization is achieved using Meander fractal geometry applied to each dipole element of the PLPDA. The sub-sectional tapered concept is integrated to achieve notches in the WLAN band (5.15 GHz-5.825 GHz) and the WiMAX band (3.4 GHz-3.6 GHz). A broad bandwidth

Opportunistic routing protocol with cross layer design mainly focuses on energy harvesting principles and is named as modified energy harvesting opportunistic routing protocol (MEHOR). In the cross-layer design, we follow the Markovian model where the parameters are exchanged between the different layers in order to optimize the usage of energy. MEHOR focuses on energy constraints at a sensor node

Recent researches have indicated that the gate-overlap tunnel FETs (GOTFETs) exhibit double the on-currents Ion and one-tenth the off-currents Ioff than the equally sized MOSFETs at the same technology node, making them ideal candidates for ultra-low-power VLSI applications. This paper presents a complementary GOTFET (CGOT) based dynamic full adder (DFA), which consumes significantly lower power than

In this paper, a reduced mutual coupling dual-band multiple-input-multiple-output (MIMO) antenna is reported. A thin rectangular slot is incorporated into an unlicensed 5.2 GHz band rectangular patch antenna (RPA) to excite another industrial, scientific and medical (ISM) 2.4 GHz band. In the 1×2 MIMO configuration, antennas are closely placed at a distance of λmax/8 and the mutual coupling between

The novel implementation of three evolutionary optimisation algorithms, namely quantum particle swarm optimisation (QPSO), teaching-learning based optimisation (TLBO) and symbiotic organism search (SOS) for thinning of multiple concentric circular array antenna with isotropic array elements for the simultaneous optimisation of the sidelobe levels (SLLs) as well as peak directivity is presented in this

Composite fading models have been considered as the suitable fading models for scenarios such as indoor communication and free space optical. Most of the composite fading models are based on Nakagami-m fading distribution in which amount of fading parameter ranges from 0.5 (most severe fading) to infinity (no fading). However, using the McKay–Meijer G function, one of the recent article presents McKay

In this paper, a new cascade multilevel inverter based on series connection of several basic units is proposed. The basic topology consists of 5 dc voltage sources and 12 switches. The required mathematical analysis consisting of voltage on switches, power losses and the values of dc voltage sources is provided. To verify the advantages of proposed topology, the suggested structure is compared with

In wireless charging system, limited by the coupling effect between the loads and the change of the equivalent impedance of the battery, it becomes difficult to provide efficient and stable energy supply for multiple load devices. In this paper, a multi-load constant current charging technology for wireless charging system is proposed, which combines the primary side control and the secondary side

A new approach to the design of the nearly linear phase infinite impulse response low-pass differentiators using a parallel all-pass structure is discussed in this paper. The magnitude and phase responses of the proposed low-pass differentiators are first formulated as functions of the phase responses of the corresponding all-pass filters, and a set of equations is derived such that the magnitude response

A class of fractal-chain fractance approximation circuit (FCFAC) has been discussed in this paper. The FCFAC type 1 (FCFAC-1) can achieve the rational approximation of negative-half-order fractances. Changing the series and parallel connections or the positions of resistors and capacitors in FCFAC-1 produces another three FCFACs of negative-half-order. Making scaling extensions to the four original

In this paper, direction of arrival (DOA) estimation of multiple signals with coprime array is investigated and signal subspace fitting (SSF) method is linked to the coprime array, which achieves a better DOA estimation performance than the traditional uniform array. While the SSF method requires expensive computational cost in the case of multiple signals due to the multidimensional global angular

Purpose: This paper proposes a novel approach for flywheel replacement of Induction Motor (IM) with convenient power electronic circuitry. Methology: The proposed technique is the joined execution of the Salp Swarm Optimization Algorithm (SSA) plus Adaptive Neuro-Fuzzy Interference System (ANFIS) based duty ratio controller. Findings: In the proposed technique, the ANFIS procedure is enhanced by using

This paper presents a unified reconfigurable coordinate rotation digital computer (CORDIC) processor for floating-point arithmetic. It can be configured to operate in multi-mode to achieve a variety of operations and replaces multiple single-mode CORDIC processors. A reconfigurable pipeline-parallel mixed architecture is proposed to adapt different operations, which maximises the sharing of common

In this paper, electronically tunable grounded immittance simulators are presented. Each of the proposed circuits employs a single Extra X Current Controlled Current Conveyers (EX-CCCII) and a single grounded capacitor. First, two circuits provide lossless positive grounded inductance. These circuits offer different lossless/lossy immittance circuits with some changes in the connection at the Z-terminals

Domino circuit topology for high-speed operation, robustness and lower power consumption is quintessential in design of digital systems. In this paper, various high speed and robust mechanisms are proposed to enhance the speed of Clock-Delayed Dual Keeper Domino (CDDK) circuit. Delayed enabling of keeper circuit in CDDK domino circuit reduces contention between keeper circuit and Pull-Down network

Batteries used in electric vehicles and microgrid applications use battery modules connected in series to satisfy the voltage required for each system, and battery modules are connected in parallel to increase capacity. In this parallel connected system, in order to disconnect and reconnect a specific battery module or to reconnect a new battery module, the battery module to be newly connected should

In order to obtain speed self-detecting with low cost for a bearingless induction motor (BIM) a speed-sensorless control strategy based on the iterative central difference Kalman filter (ICDKF) is proposed. Firstly, on the basis of the BIM mathematical model, the nonlinear state equation is established and its order is reduced from fifth-order to fourth-order using the stator terminal voltage and current

This paper presents a new structure of Metal Semiconductor Field Effect Transistor (MESFET) for high power applications. One of the problems that we face in the design of the MESFET devices is that in most cases, the increase of breakdown voltage is accompanied by a decrease in the saturation drain current. Our aim to propose this structure is to improve these two parameters simultaneously. Using the

The performance of most angle estimation system degrades when the signal attributes coherency coupled with the high computational burden of the preprocessing technique. This paper addresses the issue of the computational burden of the coherent angle estimation for the bistatic multiple-input multiple-output (MIMO) radar. A modified spatial smoothing technique is initially developed by ensuring the

Medical data transmission is a major challenge in wireless communication to preserve their integrity and coherence. Orthogonal frequency division multiplexing (OFDM) has emerged as a modulation scheme that can achieve high data rates over frequency selective fading channel by multipath effects. As the foetal ECG (FECG) signal is large to process, the dimensionality of the data is reduced by linear

In this paper, a dual-band circular polarised (CP), Multiple Input Multiple Output (MIMO) antenna with bi-directional polarisation is presented. Designed antenna is operating at two frequency bands i.e. 5.4 GHz–6.2 GHz and 7.0 GHz–7.4 GHz. A rectangular dielectric resonator (DR) is excited by two ports for designing an MIMO antenna system. To generate the Circular polarisation, ground plane is modified

It is very important that the quality of the energy obtained is at a high level while alternating energy is obtained from the direct current energy source. In order to improve the energy quality by reducing the harmonics in the generation of the alternating current, numerous studies have been done on multi-level inverter hardware structures and switching techniques. However, the effect of the slope

Image upscaling is an efficient solution to eliminate the gap between image/video sizes and display resolutions. Generally, image-upscaling algorithms use computation-intensive edge detection and filtering to improve their performance with inefficient hardware performances. In this study, an image-upscaling algorithm for 1080p to 4K using gradient-based interpolation technique is proposed. It simply

This paper proposes a novel tracking method to deal with fast changes of solar irradiation and power limit change in order to increase tracking efficiency. This goal is achieved by estimating (i) next operating mode and (ii) next step point with the use of tangent rule in triangle. After every fast response to sudden changes, accurate response phase starts in order to track desired power in each operating