Electromyography (EMG) measures the electrical activity in muscles during movement. An electromyography machine records signals from muscle's movements as sound waves. EMG signal measurement is used to help doctors make a quick evaluation identify conditions such muscle problems; dystrophy and neuropathies. The objectives of this study were provide good method that gives proper preprocessing for signals. Often, corrupted by natural noise, which makes analysis difficult; new method, namely...

The empirical wavelet transforms and Capon time-frequency applications are used in this work. EMG EEG non-invasive ways to measure muscle activity the electrical of brain. visual analyses significantly impacted by these noises. EWT's effectiveness eliminating sounds has been assessed using several common metrics between clean original signal filter's output. According results, EWT performed better than other denoising algorithms terms locating different parts aberrant biomedical data. is...

<p>The high-efficiency multi-source Lithium-Ion battery charger with multiple renewable energy sources described in the present paper is based on supply voltage management and a variable current source. The goal of charging constant (CC) mode controlling circuit are both made achievable using source, which may improve charger’s efficiency. must be charged degraded by switching from CC state for (CV) to prevent harming Li-Ion battery. Cadence Virtuoso simulator was utilized obtain...

In this paper, we study a perfect quasi-periodic system, consisting of periodicity segments length d <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</inf> and N' closed resonators lengths xmlns:xlink="http://www.w3.org/1999/xlink">2j</inf> , in which the depend on each other according to an arithmetic sequence. Firstly, take single resonator between two semi-infinite guides indicate existence AIT resonance resonant modes move towards lower...

The problem of the potential depletion IPv4 addresses has given rise to development a new version Internet Protocol named IPv6. This protocol offers many improvements, including an increase in address space from 232 2128 and improvements security, mobility, quality service. However, transition current (IPv4 IPv6) is complicated cannot be performed short time. size complexity make this migration task extremely difficult time-consuming. Engineering Task Force (IETF) took into account proposed...

Wearable biomedical devices for recording electrocardiograms (ECG) are becoming more and popular as they provide clinicians with a comprehensive view of patient's diagnosis. ECG signals characterized by low amplitude susceptible to many kinds noise, so high gain common mode rejection ratio (CMRR) essential suppress them, while ultra-low power noise (AFE) is used Analog front-end signal acquisition, based on Drive Right Leg (DRL) circuit that combines common-mode feedback CMRR notch filter...

This paper presents an integrated power control system for photovoltaic systems based on maximum point tracking (MPPT). The architecture presented in this is designed to extract more from panels under different partial obscuring conditions. To the MPPT block, used ripple correlation algorithm (RCC), as well a high-efficiency synchronous direct current (DC-DC) boost converter. Using 180 nm complementary metal-oxide-semiconductor (CMOS) technology, proposed was designed, simulated, and layout...

This paper presents an architecture of a charger based on LDO regulator with high efficiency for Li-Ion battery which controlled the three-mode: trickle current, fast constant current and voltage modes. The simulation results provide 250mA, maximum charging 1. 12A 4. 2V at power supply 4.8-5V using TSMC 180nm CMOS technology.

This paper introduces a novel direct current to (DC-DC) buck converter that uses pseudo-current hysteresis controller and an on-chip soft start circuit for improved transient performance in automotive applications. The proposed converter, implemented with Taiwan semiconductor manufacturing company (TSMC) 0.18 µm complementary metal oxide (CMOS) one-poly-six-metal (1P6M) technology, includes rail-to-rail detection handle responses improve efficiency. Transient response analysis shows fast...

This paper presents a novel Li-Ion battery charger that utilizes low-dropout (LDO) regulator and incorporates four control modes: low constant current mode, pre-charge fast voltage mode. The aims to meet specific criteria such as high precision, efficiency, small form factor. Through simulation results, the following specifications were obtained using 1.8 V supply in 0.18 μm complementary metal–oxide–semiconductor (CMOS) technology: trickle of 124.7 mA, 466.94 maximum charge 1.06 A, 4.21 V....

This paper introduces an enhanced low transient voltage and fast response boost converter. It uses a hysteresis-controlled circuit fed by signal from rail-to-rail current sensor, resulting in improved efficiency, response. The converter is designed using Taiwan semiconductor manufacturing company (TSMC) 0.18 µm CMOS 1P6M technology, delivers output of 1.8 V while operating with input range 0.5 to 1 supports load 10 100 mA. key contributions this are: i) introducing new architecture employing...

In this paper, an analysis and design of a new active rectifier used for wireless power transfer applications using 90 nm CMOS technology are presented. The proposed architecture the has mainly been chosen to improve VCE PCE also eliminate need large on-chip capacitors. circuits drop needed conduction by replacing diode-connected nMOS devices with others controlled circuit. designed, simulated, laid out Cadence Virtuoso TSMC 90nm technology. input range is 0–5 V, output voltage 2.14 values...

This paper presents A low noise, high PSRR low-dropout regulator for low-cost portable electronics. The proposed LDO uses an Operational Transconductance Amplifier (OTA) with Miller R-C compensation to ensure a stable phase margin greater than 62°. active chip of the is only 150×680 um2. design was simulated and lyouted in Cadence using mixed-signal 90 nm 2P9M CMOS process, simulation results show that this output voltage can achieves line regulation less 0.10% load better 0.25% quiescent...

This paper presents a new analog Li-Ion battery charger using pulsed charging. Simple structure, low cost and small size, the proposed is very solution because it doesn't need any calibration no precise external resistor needed to end of charge detection. implemented in TSMC 0.18um CMOS process with power supply equal 5V. The maximum charging current reaches 800mA output voltage over or 4.2V. layout occupies active area 1.5 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...

A new architecture of Li-Ion battery charger with charge mode selection is presented in this work. To ensure high efficiency, good accuracy and complete protection mode, we propose an based on variable current source, temperature detector power control. avoid the risk damage, Li- Ion batteries charging process must change between three modes (trickle (TC), constant (CC), voltage (CV)) order to degrading current. However, interest study develop a fast that able switch without reducing its...

Currently, the exponential growth of Internet and limitations IPv4 (the current version Protocol) in terms lack IP addresses, mobility security make transition from to IPv6 more a necessity. There are even some operators who finished off their addresses store migrated IPv6. In addition, routing protocols have adapt facilitate this deployment as well. Moreover, selection best protocol among available ones is critical task, which depends on one hand network requirements its other performance...

In this paper, we propose a new power generating circuit for passive ultra high frequency (UHF) RFID tag. The proposed consists of RF limiter, efficiency and sensitivity full wave radio (RF) rectifier low-power regulator with NMOS diodes work like DC-limiter. design method in study use one low drop out (LDO) to provide tow output stable supply voltages vdd1 value 1V the digital section supply, vdd2 0.5V analog front-end supply. is optimized terms consumption tag system have operating range...

This paper presents the simulation results of an Amplitude-shift keying (ASK) modulator in 180nm CMOS technology for radio frequency identification (RFID) tag. It can operates even at low voltage VDD=1V. based on multiplier. The proposed circuit made multiplication two signals, a carrier signal (high sinusoidal signal) and modulating (low signal), we chose square that has binary sequence data to transmit, output variation amplitude is called modulated signal. We designed circuits do same...