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370 articles for “Filtering”
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ECG System based on ATMEGA 16 Microcontroller
Abstract: AbstractOur paper describes the electrocardiography (ECG) monitoring system based on ATMEGA 16 microcontroller. To detect R-peak detection and heart rate monitoring, the authors used ATMEGA 16 microcontroller with inbuilt analog-to-digital (ADC). Our device is low cost and portable, so that it can help in home monitoring of ECG data. The basic aim of our roject is the detection of abnormality or emergency condition, before they prove to be dangerous. ECG …
Published in Journal of Microcontroller Engineering and Applications · Vol. 4, Issue 3, 2017 · pp. 11–15 Read article
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Analysis and Design of Microstrip Antenna for Applications in Energy Harvesting
Abstract: AbstractThis paper focuses on design and analysis of wide band antenna for the use of energy harvesting. The design parameter for achieving optimal operation of the antenna is also analyzed. The presented antenna design has been simulated by IE3D software which is suitable for wide band applications at resonant frequency 3.23 and 4.25 GHz.Keywords: Wireless communication, LC filter, RF power, Schottky diodeCite this ArticleHira Sultan, Neha Sen, Vinod Kumar Singh, …
Published in Journal of Microwave Engineering and Technologies · Vol. 4, Issue 3, 2017 · pp. 1–4 Read article
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LNA-BPF for Receiver Applications in ISM Band
Abstract: A new approach of design and performance analysis of low-noise amplifier with band-pass filter at 2.45 GHz is proposed in this paper. High gain of 15.99 dB and noise of 1.024 dB is achieved at a frequency of 2.45 GHz. A low noise amplifier is used in receiver applications to amplify possibly very weak signals. LNA and BPF are placed in the front end of the receiver circuit so that …
Published in Journal of Microwave Engineering and Technologies · Vol. 3, Issue 2, 2016 · pp. 7–12 Read article
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EBG Technology and Applications; A Review
Abstract: This present paper concentrates on applications of Electromagnetic band gap (EBG) technology that is operating at microwave and sub mm wave frequencies. Some of examples of Electromagnetic band gap configurations in the region of microwave are shown, that includes array antennas, high precision GPS, mobile telephony, wearable antennas and diplexing antennas. A 500 GHz dipole configuration and a novel heterodyne mixer are shown as examples for sub millimeter wave region. …
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 1, 2015 · pp. 21–36 Read article
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Design of Digital Frequency Sensitive Phase Detector and study its Phase Response
Abstract: In this paper, a digital frequency sensitive phase detector (PD) with voltage controlled phase response is presented. This scheme is based on classical type flip-flop phase detectors and an improved PD operating on both edges of the input sequence. Phase-to-voltage response characteristic control is accomplished by the additional feedback of the low-pass filter output voltage to reset the control pin input. In this paper, we have presented a simulated frequency …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 3, 2021 · pp. 43–51 Read article
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Improved Unified Power Quality Conditioner Design and Numerical Simulation For Power Quality Improvement
Abstract: Harmonic currents can distort the waveform voltage, resulting in a weak signal. There is also an increase in the number of loads requiring enough sinus tension to function properly. As electronic devices become more power-sensitive, people are becoming increasingly interested in power conditioning solutions. Therefore, if the amount of electricity being generated falls below a certain threshold, some type of compensation must be provided. Unified Power Quality Controller (UPQC) is …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 3, 2021 · pp. 52–60 Read article
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Analysis of Braggs Grating for photonics application
Abstract: The plane wave expansion approach was used to optimise reflectance in a Braggs grating on a silicon on insulator structure at wavelength 1.55µm. When the results were compared to the experimental results, it was discovered that they agreed better than any other present results. Aside from the inherent benefits of FBGs, such as low cost, low losses, polarisation insensitivity, and full compatibility with fiber-optic systems, they have demonstrated that by …
Published in Journal of Microwave Engineering and Technologies · Vol. 9, Issue 1, 2022 · pp. 32–35 Read article
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A Compact CPW-fed Quadruple-band-notched Antenna with Concentric Annular-rings for UWB Applications
Abstract: In this paper, a compact coplanar waveguide (CPW)-fed quadruple-band-notched antenna with concentric annular-rings for ultra-wideband (UWB) applications is presented. The proposed antenna consists of four concentric annular-ring resonators, a circular shape radiating element and a CPW feed line. The quadruple band rejection is easily achieved by controlling the widths and radii of four concentric annular-ring resonators. Through the exception of four stop-bands at 3.29 to 3.7 GHz, 5.07 to 5.92 …
Published in Journal of Microwave Engineering and Technologies · Vol. 10, Issue 2, 2023 · pp. 38–47 Read article
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Investigation of Local Weighting Materials as a Substitute To Barite In Drilling Mud Formulation
Abstract: Weighting materials are important components needed to increase the density of drilling mud in order to provide enough hydrostatic pressure to balance abnormalpore pressures. In Nigeria, millions of dollars are spent annually in importing barite to serve this purpose. However, there exists large reserves of weighting materials such as barite, hematite, dolomite, calcite, ilmenite in Nigeria hence the need to investigate the suitability of these materials as substitute for imported …
Published in Journal of Materials & Metallurgical Engineering · Vol. 10, Issue 1, 2020 · pp. 39–48 Read article
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A Robust and Real Time Approach for Scene Text Localization and Recognition in Image Processing
Abstract: The text localization and recognition in real-time scene text images is still a big issue in current applications. Mobile application and digitization in real world gives a vital and broad impact on real-time scene text images. However, the efficiency of recognition rate depends upon the text localization, i.e., higher the purity of text background segmentation and decomposition, higher the rate of accuracy for the image recognition. In this paper is …
Published in Journal of Microelectronics and Solid State Devices · Vol. 2, Issue 3, 2015 · pp. 16–22 Read article
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Use of Microwaves in Wireless Charging of Mobile Phone
Abstract: The foremost objective of this present scheme is to make the recharging of the mobile phones independent of their manufacturer and battery make. In this paper a new scheme has been made so as to make the recharging of the mobile phones is done by design as you talk in your mobile phone. This is done by use of microwaves. The microwave signal is transmitted from the transmitter along with …
Published in Journal of Microelectronics and Solid State Devices · Vol. 2, Issue 2, 2015 · pp. 21–25 Read article
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Sinusoidal Pulse Width Modulation Switching Technique based Single Phase Inverter
Abstract: This paper discusses about the inverter which transfers power from DC source to AC load side. Inverters are usually used in motor drive, static var compensators, uninterruptible power supplies (ups), etc. Pulse Width Modulation (PWM) technique is used because the total harmonics distortion is low as compared with other techniques. The switching scheme of sinusoidal PWM permits control of the frequency and the magnitude of the output. This switching scheme …
Published in Journal of Power Electronics and Power Systems · Vol. 9, Issue 1, 2019 · pp. 34–41 Read article
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Performance Comparison of Control Approaches for Improving Power Quality by DSTATCOM
Abstract: Power quality is very important consideration for electrical supply system. A number of methods like active-passive filters, dynamic voltage restorer, distribution static compensator (DSTATCOM) etc; are used to compensate the power quality problems like harmonics, voltage sag and swell, load balancing and others. This paper presents performance comparison of two control strategies used for DSTATCOM to mitigate the problems of harmonics in distribution network. The DSTATCOM, a shunt connected device …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 1, 2016 · pp. 26–33 Read article
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Performance of Smes Unit on Artificial Neural Network Based Multi-Area Agc Scheme
Abstract: The main objective of this paper is to develop Fuzzy controller to analyse the performance ofinstantaneous real active and reactive power (p–q) control strategy for extracting reference currents ofshunt active filters under balanced, un-balanced and balanced non-sinusoidal conditions. When the supplyvoltages are balanced and sinusoidal, the all control strategies are converge to the same compensationcharacteristics; However, the supply voltages are distorted and/or un-balanced sinusoidal, these controlstrategies result in different degrees …
Published in Journal of Power Electronics and Power Systems · Vol. 1, Issue 1-2-3, 2011 · pp. 47–58 Read article
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RTDS Hardware Implementation and Simulation of 3-ph 4-wire SHAF for Mitigation of Current Harmonics using p-q Control strategy With Fuzzy Controller
Abstract: The main objective of this paper is to develop Fuzzy controller to analyse the performance of instantaneous realactive and reactive power (p–q) control strategy for extracting reference currents of shunt active filters underbalanced, un-balanced and balanced non-sinusoidal conditions. When the supply voltages are balanced andsinusoidal, the all control strategies are converge to the same compensation characteristics; However, thesupply voltages are distorted and/or un-balanced sinusoidal, these control strategies result in different …
Published in Journal of Power Electronics and Power Systems · Vol. 1, Issue 1-2-3, 2011 · pp. 59–71 Read article
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Adaptive-Hysteresis Current Controller Based Shunt Active Power Line Conditioners for Power Quality Improvements
Abstract: This paper presents three-phase shunt active power line conditioners (APLC) for harmonics and reactive powercompensation due to non-linear loads in the distribution network. The compensation process proposed is asinusoidal extraction control method, which consists of positive-sequence voltage detector for regulating thesupply voltage and instantaneous reactive power (p-q) theory for fundamental extraction from the distorted linecurrent. The shunt active filter voltage source inverter’s switching pulses are generated through an adaptivehysteresiscurrent controller …
Published in Journal of Power Electronics and Power Systems · Vol. 1, Issue 1-2-3, 2011 · pp. 1–13 Read article
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Different Types of PWM Techniques for Single Phase Inverter: A Review
Abstract: In this paper, different types of PWM techniques and their methodology of single-phase inverter have been introduced. The PWM technique used in single phase inverter is more advantageous than conventional inverter. This paper includes the review of modern power devices such as MOSFETs, IGBTs, etc. The conventional inverter output voltage changes according to the change in load but in single phase PWM inverter gives the steady output of voltage 230 …
Published in Journal of Power Electronics and Power Systems · Vol. 12, Issue 3, 2022 · pp. 19–25 Read article
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Experimental Analysis of the Effect of Fine Milled Husk of Rice as a Novel Filtration Control Agent for Water Based Drilling Fluid System
Abstract: Drilling operation is a complex process that requires integration of various engineering systems. As the drilling continues, the formation encountered offers challenges to wellbore integrity as pressure increases with depth. The influx of formation fluid is contained by the overbalance provided by weighted drilling fluid column. Another critical function of the mud is to restrict the filtration fluid lost to the formation by forming a suitable mud-cake around the wellbore. …
Published in Journal of Petroleum Engineering & Technology · Vol. 7, Issue 1, 2017 · pp. 4–8 Read article
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Eco-friendly drilling fluid water loss controlling agents
Abstract: The water loss from the drilling fluid with the addition natural additives like bagasse, natural sugar, natural rubber was studied. The entire study is focused on improving the quality of controlling fluid loss with effect of natural additives. The concentrations of the additives were changed to achieve the desired reasonable value of fluid loss with the help of high pressure and high temperature (HPHT) filter press which worked at the …
Published in Journal of Petroleum Engineering & Technology · Vol. 9, Issue 2, 2019 · pp. 14–16 Read article
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A New Dual Side Cut Corner Circularly Polarized Rectenna 2.45 GHz with DGS
Abstract: This paper introduces a new dual side cut corner circular polarized (CP) high efficiency rectifying antenna (Rectenna) array. The Rectenna consists of a truncated square patch antenna and a rectifying circuit. The Rectenna use a micro-strip patch antenna as a frequency 2.45 GHz and gain of 31.29 dB. The Rectenna circuit has a low pass filter (LPF) the maximum RF to DC conversion efficiency of the Rectenna is 68%.
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 2, Issue 3, 2015 · pp. 19–23 Read article