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Journal articles on the topic 'Maximum power gain'

Author: Grafiati

Published: 9 November 2022

Last updated: 4 March 2023

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1

McGregor, J. M., and D. J. Roulston. "Transistor design for predictable power gain at maximum frequency." IEEE Transactions on Electron Devices 39, no. 2 (1992): 389–95. http://dx.doi.org/10.1109/16.121698.

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2

Bakos, J. S., P. N. Ignacz, and Z. Sorlei. "Role of power broadening in influencing maximum gain of far infrared gain material." IEEE Journal of Quantum Electronics 29, no. 7 (1993): 2220–24. http://dx.doi.org/10.1109/3.237496.

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3

Felinskyi, Georgii S., and Mykhailo Y. Dyriv. "Noise Gain Features of Fiber Raman Amplifier." Advances in OptoElectronics 2016 (July 12, 2016): 1–7. http://dx.doi.org/10.1155/2016/5843636.

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The formation dynamics of the optical noise in a silica single mode fiber (SMF) as function of the pump power variation in the counter pumped fiber Raman amplifier (FRA) is experimentally studied. The ratio between the power of amplified spontaneous emission and the power of incoherent optical noise is quantitatively determined by detailed analysis of experimental data in the pump powers range of 100–300 mW within the full band of Stokes frequencies, including FRA working wavelengths over the C + L transparency windows. It is found out the maximum of Raman gain coefficient for optical noise do

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4

Tian, Hong Fang, Jian Bo Cao, and Zheng Xi Li. "The High-Gain Boost Converter for Maximum Power Point Tracking in Photovoltaic System." Advanced Materials Research 383-390 (November 2011): 2677–84. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.2677.

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The aim of this paper is to introduce a high-gain Boost circuit and to use the maximum power model to analyze the principles of maximum power point tracking (MPPT) in photovoltaic (PV) system .The principle is applied to the high-gain Boost circuit and control circuit, through a specific MPPT algorithm to change the duty cycle of Boost circuit realizes maximum power tracking and higher DC output voltage, the control circuit are formed by the CPLD and the AVR microcontroller, through which the control circuit to generate a varying duty cycle and 40KHz PWM pulse to control High-gain Boost circui

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P, Bhavana. "Maximum Power Extraction in Low Power PV FED High Voltage Gain Boost Converter using Optimization Algorithm (PO & INC) by Limiting the Oscillations." Revista Gestão Inovação e Tecnologias 11, no. 4 (2021): 1163–76. http://dx.doi.org/10.47059/revistageintec.v11i4.2176.

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Hu, Guanqu, Jinhui Cui, Fengjun Tian, et al. "Orthogonally Polarized Dual-Wavelength Gain-Switched Ho:LuLiF4 Pulse Laser." Photonics 10, no. 1 (2023): 62. http://dx.doi.org/10.3390/photonics10010062.

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A compact, orthogonally polarized, gain-switched a-cut Ho:LuLiF4 laser with intra-cavity pumping by a self-Q-switched Tm:YAP laser is demonstrated here for the first time. The π-polarization laser at 2052 nm and σ-polarization laser at 2066 nm were experimentally observed with the maximum output power values of 299 mW and 126 mW, respectively, and the two polarization directions were always kept mutually orthogonal as the pump power increased. The ratio of the output power between the two orthogonal polarization lasers was nearly 1:1 at a pump power of 18.4 W. The minimum pulse width of the Ho

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7

Sahu, Pankaj, and Rajiv Dey. "Maximum power point tracking using adjustable gain based model reference adaptive control." Journal of Power Electronics 22, no. 1 (2021): 138–50. http://dx.doi.org/10.1007/s43236-021-00336-3.

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8

G. SIVA, KUMAR, and DEVI A. LAKSHMI. "NEURO FUZZY GAIN SCHEDULER FOR MAXIMUM POWER TRACKING OF WIND DRIVEN DFIG." i-manager’s Journal on Electrical Engineering 13, no. 2 (2019): 33. http://dx.doi.org/10.26634/jee.13.2.15790.

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9

Umeda, Hiroyuki, Kenichiro Takahashi, and Yoshiaki Shiraga. "Maximum available power gain of microwave-transistor amplifier under large-signal operation." Electronics and Communications in Japan (Part II: Electronics) 71, no. 2 (1988): 40–52. http://dx.doi.org/10.1002/ecjb.4420710205.

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10

Ramiah, Harikrishnan, U. Eswaran, and J. Kanesan. "A high gain and high linearity class-AB power amplifier for WCDMA applications." Microelectronics International 31, no. 1 (2013): 1–7. http://dx.doi.org/10.1108/mi-09-2012-0069.

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Purpose – The purpose of this paper is to design and realize a high gain power amplifier (PA) with low output back-off power using the InGaP/GaAs HBT process for WCDMA applications from 1.85 to 1.91 GHz. Design/methodology/approach – A three stages cascaded PA is designed which observes a high power gain. A 100 mA of quiescent current helps the PA to operate efficiently. The final stage device dimension has been selected diligently in order to deliver a high output power. The inter-stage match between the driver and main stage has been designed to provide maximum power transfer. The output mat

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Kim, Huh, and Ko. "Improvement of MPPT Control Performance Using Fuzzy Control and VGPI in the PV System for Micro Grid." Sustainability 11, no. 21 (2019): 5891. http://dx.doi.org/10.3390/su11215891.

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This paper proposes the method for maximum power point tracking (MPPT) of the photovoltaic (PV) system. The conventional PI controller controls the system with fixed gains. Conventional PI controllers with fixed gains cannot satisfy both transient and steady-state. Therefore, to overcome the shortcomings of conventional PI controllers, this paper presents the variable gain proportional integral (VGPI) controllers that control the gain value of PI controllers using fuzzy control. Inputs of fuzzy control used in the VGPI controller are the slope from the voltage-power characteristics of the PV m

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12

Zhang, Xiao Wei, Ke Jin Jia, Yv Long Fang, Shao Bo Dun, Zhi Hong Feng, and Heng Ping Zhao. "High Performance Ka-Band InAlN/GaN/AlGaN HFET on SiC." Advanced Materials Research 662 (February 2013): 284–87. http://dx.doi.org/10.4028/www.scientific.net/amr.662.284.

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Ka-band radio-frequency(RF) performance of a InAlN/GaN/AlGaN HFET on SiC was reported. Based on a detailed delay analysis,a maximum drain current density of 1.12 A/mm was obtained. Power measurements were performed, the maximum output power density is 2.1 W/mm and a power-added efficiency (PAE) is 22.3% at 29 GHz. The current gain cut-off frequency (fT) is 60 GHz, and the power gain cut-off frequency (fMAX) is 105 GHz.

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13

Bharatiraja, C., Shri Harish, J. L. Munda, P. Sanjeevikumar, M. Sriram Kumar, and Vivek Bhati. "A PWM Strategies for Diode Assisted NPC-MLI to Obtain Maximum Voltage Gain for EV Application." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 2 (2017): 767. http://dx.doi.org/10.11591/ijpeds.v8.i2.pp767-774.

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The projected diode assisted Neutral Point Diode Clamed (NPC-MLI) with the photovoltaic system produces a maximum voltage gain that is comparatively higher than those of other boost conversion techniques. This paper mainly explores vector selection approach pulse-width modulation (PWM) strategies for diode-assisted NPC-MLI to obtain a maximum voltage gain without compromising in waveform quality. To obtain a high voltage gain maximum utilization of dc-link voltage and stress on the power switches must be reduced. From the above issues in the diode assisted NPC-MLI leads to vector selection app

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14

Jin, Yanyu, Mihai A. T. Sanduleanu, and John R. Long. "A Wideband Millimeter-Wave Power Amplifier With 20 dB Linear Power Gain and +8 dBm Maximum Saturated Output Power." IEEE Journal of Solid-State Circuits 43, no. 7 (2008): 1553–62. http://dx.doi.org/10.1109/jssc.2008.922385.

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15

Reddy, C. Subba Rami, Bharath Kumar Narukullapati, M. Uma Maheswara Rao, et al. "Nonisolated DC to DC Converters for High-Voltage Gain Applications Using the MPPT Approach." Mathematical Problems in Engineering 2022 (August 22, 2022): 1–12. http://dx.doi.org/10.1155/2022/9227651.

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It is proved and examined in this research paper that the perturb and observe (P and O) technique for isolating the photovoltaic array (PVA) from the power structure may be used to isolate the PV array from the power structure. A single specified voltage setup can remove the maximum power from a PV cell because of the nonlinear properties of the PV cell’s output. As a result, in PVA, the maximum power point tracking (MPPT) algorithm is utilized to increase the yield control range by increasing the maximum power point. In this study, the MPPT computations are carried out with the assistance of

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16

Fan, Li, Ran Sun, Liming Wang, Keyun Xiang, Jun Shen, and Jun Zhu. "High-power and efficient orthogonally-polarized dual-wavelength Nd:YLF laser." Laser Physics 32, no. 12 (2022): 125001. http://dx.doi.org/10.1088/1555-6611/ac9c4e.

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Abstract We demonstrate an actively Q-switched orthogonally-polarized dual-wavelength laser at 1047.4 nm and 1053.4 nm with high average power and high efficiency. The gain competition between dual-wavelength lasers is effectively suppressed by using two Nd:YLF crystals as laser gain medium. Investigations concerning different resonator structures and pulse repetition frequency were conducted to achieve the best performance of this laser. Under the total incident pump power of 32.7 W, a maximum dual-wavelength laser output power of 13.4 W is obtained at the pulse repetition rate of 30 kHz, cor

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17

Rachakh, Amine, Larbi El Abdellaoui, Jamal Zbitou, Ahmed Errkik, Abdelali Tajmouati, and Mohamed Latrach. "A Novel Configuration of A Microstrip Power Amplifier based on GaAs-FET for ISM Applications." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 5 (2018): 3882. http://dx.doi.org/10.11591/ijece.v8i5.pp3882-3889.

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Power Amplifiers (PA) are very indispensable components in the design of numerous types of communication transmitters employed in microwave technology. The methodology is exemplified through the design of a 2.45GHz microwave power Amplifier (PA) for the industrial, scientific and medical (ISM) applications using microstrip technology. The main design target is to get a maximum power gain while simultaneously achieving a maximum output power through presenting the optimum impedance which is characteristically carried out per adding a matching circuit between the source and the input of the powe

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18

Capitaine, Armande, Gael Pillonnet, and Bruno Allard. "Strategies of Maximum Power Point Tracking for Sub-mW Benthic Microbial Fuel Cells." Journal of Low Power Electronics 15, no. 4 (2019): 351–60. http://dx.doi.org/10.1166/jolpe.2019.1620.

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Benthic microbial fuel cells (MFCs) are promising alternatives to conventional batteries for powering underwater low-power sensors. Regarding performances (10's μW at 100's mV for cm 2-scale electrodes), an electrical interface is required to maximize the harvested energy and boost the voltage. Because the MFCs electrical behavior fluctuates, it is common to refer to maximum power point tracking (MPPT). Using a sub-mW flyback converter, this paper compares the benefit of different MPPT strategies: either by maximizing the energy at the converter input or at the converter output, or by fixing t

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19

Peng, Wenxiong, Xinyuan Li, Huaiqing Zhang, Zhewei Liu, and Wei Song. "A 5.8 GHz high-gain flexible receiving antenna for wireless power transmission." AIP Advances 12, no. 12 (2022): 125220. http://dx.doi.org/10.1063/5.0133581.

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In this paper, a 5.8 GHz, high-gain flexible receiving antenna (FRA) is proposed, which can be used for wireless power transmission (WPT) systems. The FRA is designed by an iterative process and is etched on Kapton, with a coplanar waveguide (CPW) feed. In order to improve the gain of the FRA, an air-gap and a flexible reflector are loaded, and the gain is improved from 2.79 to 9.51 dBi at 5.8 GHz. To validate the stability of FRA, the fabricated prototype uses three configurations of 80, 70, and 50 mm. The impedance matching keeps well, and the gain of the FRA can sustain above 8.96 dBi. In a

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Huang, Zhe Yang, Che Cheng Huang, Jung Mao Lin, and Chung Chih Hung. "High Gain and Low Noise Single Balanced Wireless Receiver Front-End Circuit Design." Applied Mechanics and Materials 284-287 (January 2013): 2647–51. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.2647.

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This paper presents a wideband wireless receiver front-end for 3.1-5.0GHz band group-1 (BG-1) WiMedia application. The front-end circuits are designed in 0.18um standard CMOS process. The experimental results show the maximum conversion power gain is 45.5dB; minimum noise figure is 2.9dB. Input return loss is lower than -9.3dB and output return loss is lower than -6.8dB. The maximum LO conversion power is 0dBm. 3dB working frequency is 1.9GHz (3.1GHz-5.0GHz) Total power consumption is 24.3mW including LNA, mixer and all buffers. Total chip area is 1.27mm2 including dummy and pads.

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Cao, Ning, Yuchang Ye, and Minghe Mao. "The Effect of Misdetection Probability on the Performance of Cooperative-Relaying-Based Cognitive Radio Systems." Mobile Information Systems 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/1051632.

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Cognitive radio (CR) is a promising solution to address the more and more congested radio spectrum. Cooperative relaying can provide a better transmission performance for the secondary user (SU), while the performance of the primary user (PU, also named licensed user) should be preferentially protected especially when there is misdetection probability. In this paper, in order to keep the PU away from outage caused by the interference from the SU under a certain signal-to-noise ratio (SNR), the maximum SNR for the SU can be derived by using the rate decaying factor (RDF). Then, based on the max

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22

Sarkar, Tamen Thapa, and Chitralekha Mahanta. "Gain Tuned Sliding Mode Control Based Maximum Power Point Tracking for Solar PV systems." IFAC-PapersOnLine 55, no. 1 (2022): 417–22. http://dx.doi.org/10.1016/j.ifacol.2022.04.069.

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23

Dounis, Anastasios I., Panagiotis Kofinas, Constantine Alafodimos, and Dimitrios Tseles. "Adaptive fuzzy gain scheduling PID controller for maximum power point tracking of photovoltaic system." Renewable Energy 60 (December 2013): 202–14. http://dx.doi.org/10.1016/j.renene.2013.04.014.

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24

de la Rosa Romo, David, Rodrigo Loera-Palomo, Michel Rivero, and Francisco S. Sellschopp-Sánchez. "Averaged current mode control for maximum power point tracking in high-gain photovoltaic applications." Journal of Power Electronics 20, no. 6 (2020): 1650–61. http://dx.doi.org/10.1007/s43236-020-00144-1.

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25

Günel, Tayfun. "A continuous hybrid approach to the FET modelling for the maximum transducer power gain." Microwave and Optical Technology Letters 35, no. 5 (2002): 348–51. http://dx.doi.org/10.1002/mop.10603.

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26

Rukhlenko, Ivan D., Malin Premaratne, and Govind P. Agrawal. "Maximization of Gain in Slow-Light Silicon Raman Amplifiers." International Journal of Optics 2011 (2011): 1–7. http://dx.doi.org/10.1155/2011/581810.

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We theoretically study the problem of Raman gain maximization in uniform silicon photonic-crystal waveguides supporting slow optical modes. For the first time, an exact solution to this problem is obtained within the framework of the undepleted-pump approximation. Specifically, we derive analytical expressions for the maximum signal gain, optimal input pump power, and optimal length of a silicon Raman amplifier and demonstrate that the ultimate gain is achieved when the pump beam propagates at its maximum speed. If the signal’s group velocity can be reduced by a factor of 10 compared to its va

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27

Weitkemper, P., K. Zielinski, K. D. Kammeyer, and R. Laur. "Optimized power allocation for iterative multiuser detection for a SC-CDMA uplink." Advances in Radio Science 5 (June 13, 2007): 273–78. http://dx.doi.org/10.5194/ars-5-273-2007.

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Abstract. This paper deals with optimization of the received power profile for iterative parallel and successive interference cancellation (PIC/SIC) in coded CDMA systems. For practical implementation additional constraints should be applied. This paper focuses on the maximum tolerable bit error rate. It will be shown that optimized power profile can considerably gain the overall system performance. Due to unequal required receive powers an allocation to certain users can be done with respect to their individual power constraints. This is important especially in near-far scenarios. Beside thes

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Wang, Youfei. "Models and Programs of the Gain and Noise Figure of the Nd-doped Fiber Amplifier in 1.7-1.8μm Band". Journal of Physics: Conference Series 2282, № 1 (2022): 012016. http://dx.doi.org/10.1088/1742-6596/2282/1/012016.

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Abstract This paper gives an introduction and research results on the Nd-doped fiber amplifier. We have constructed calculation models and programs of the Gain and Noise Figure with changing pump power, signal power, number of doped ions per unit volume, and fiber length using MATLAB. When the pump power or ion concentration increases, or the signal power decreases, the Gain has an increasing trend as presented in the research results. The Gain reaches a maximum when the fiber length is 1.35m. The Noise Figure decreases with increasing signal power or decreasing ion concentration. It reaches a

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Wang, Youfei. "Models and Programs of the Gain and Noise Figure of the Nd-doped Fiber Amplifier in 1.7-1.8μm Band". Journal of Physics: Conference Series 2282, № 1 (2022): 012016. http://dx.doi.org/10.1088/1742-6596/2282/1/012016.

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Abstract This paper gives an introduction and research results on the Nd-doped fiber amplifier. We have constructed calculation models and programs of the Gain and Noise Figure with changing pump power, signal power, number of doped ions per unit volume, and fiber length using MATLAB. When the pump power or ion concentration increases, or the signal power decreases, the Gain has an increasing trend as presented in the research results. The Gain reaches a maximum when the fiber length is 1.35m. The Noise Figure decreases with increasing signal power or decreasing ion concentration. It reaches a

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Sun, Hongchang, Yaozhen Han, and Lvyuan Zhang. "Maximum Wind Power Tracking of Doubly Fed Wind Turbine System Based on Adaptive Gain Second-Order Sliding Mode." Journal of Control Science and Engineering 2018 (2018): 1–11. http://dx.doi.org/10.1155/2018/5342971.

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This paper proposes an adaptive gain second-order sliding mode control strategy to track optimal electromagnetic torque and regulate reactive power of doubly fed wind turbine system. Firstly, wind turbine aerodynamic characteristics and doubly fed induction generator (DFIG) modeling are presented. Then, electromagnetic torque error and reactive power error are chosen as sliding variables, and fixed gain super-twisting sliding mode control scheme is designed. Considering that uncertainty upper bound is unknown and is hard to be estimated in actual doubly fed wind turbine system, a gain schedule

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Rajalakshmi, Mani, Sankaralingam Chandramohan, Raju Kannadasan, Mohammed H. Alsharif, Mun-Kyeom Kim, and Jamel Nebhen. "Design and Validation of BAT Algorithm-Based Photovoltaic System Using Simplified High Gain Quasi Boost Inverter." Energies 14, no. 4 (2021): 1086. http://dx.doi.org/10.3390/en14041086.

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Owing to the intermittent nature of renewable energy systems, an improved power extraction technique and modernized power modulators are to be designed to overcome power quality challenges. Attesting to this fact, this work aims to enhance the efficiency of the photovoltaic (PV) system using the BAT algorithm (BA) and enhances the overall performance of the system using modified inverter topology. Specifically, a new power electronic modulator, i.e., a simplified high gain quasi-boost inverter (SHGqBI), is implemented to eliminate the downsides of the conventional system. The proposed inverter

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Hoi, Tran Van, and Ngo Thi Lanh. "Design of high power amplifier based on wilkinson power combiner for wireless communications." Indonesian Journal of Electrical Engineering and Computer Science 23, no. 1 (2021): 330. http://dx.doi.org/10.11591/ijeecs.v23.i1.pp330-337.

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Thisarticlepresentsthedesign and fabrication ofa high power amplifierbased onwilkinson power combiner. A 45W basic amplifier module isdesigned usinglaterally-diffused metal-oxide semiconductor (LDMOS) fieldeffect transistor (FET) PTFA260451E transistor. Wilkinson power combineris used to combine two input powers toproduce 90W of power. Theproposed power amplifier is researched, designed and optimized usingadvanced design system(ADS) software.Experimental results show that thegain is 11.5 dB greater than at 2.45-3.0GHz frequency band and achieving maximum power gain of 13.5dB at 2.65GHz centre

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Kelleci, Burak, and Osman Palamutcuoglu. "Pre-Power Amplifier for 5.2 - 5.8 GHz Band." Facta universitatis - series: Electronics and Energetics 15, no. 1 (2002): 103–9. http://dx.doi.org/10.2298/fuee0201103k.

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The design of a low-voltage and broadband pre-power amplifier for 5.2 GHz-5.8 GHz band is presented. The purpose of the pre-power amplifier is to separate the external power amplifier and internal mixer to deliver the required input power to the power amplifier. The amplifier is designed in 0.35 \um. SiGe technology. Differential topology is used in order to reduce the effect of the bonding inductances. The amplifier is optimized for maximum yield. The simulation results of the amplifier show 0 dBm output power with 13 dB gain. The gain variation is less than 0.5 dB in band.

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Paul, Raphael, and Karl Heinz Hoffmann. "Cyclic Control Optimization Algorithm for Stirling Engines." Symmetry 13, no. 5 (2021): 873. http://dx.doi.org/10.3390/sym13050873.

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The ideal Stirling cycle describes a specific way to operate an equilibrium Stirling engine. This cycle consists of two isothermal and two isochoric strokes. For non-equilibrium Stirling engines, which may feature various irreversibilities and whose dynamics is characterized by a set of coupled ordinary differential equations, a control strategy that is based on the ideal cycle will not necessarily yield the best performance—for example, it will not generally lead to maximum power. In this paper, we present a method to optimize the engine’s piston paths for different objectives; in particular,

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Garcia-Diaz, Maria, Dario Egloff, and Martin B. Plenio. "A note on coherence power of n-dimensional unitary operators." Quantum Information and Computation 16, no. 15&16 (2016): 1282–94. http://dx.doi.org/10.26421/qic16.15-16-2.

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The coherence power of a quantum channel, that is, its maximum ability to increase the coherence of input states, is a fundamental concept within the framework of the resource theory of coherence. In this note we discuss various possible definitions of coherence power and coherence rate and their basic properties. Then we prove that the coherence power of a unitary operator acting on a qubit, computed with respect to the l1-coherence measure, can be calculated by maximizing its coherence gain over pure incoherent states. We proceed to show that this result fails in the general case, that is, t

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Sreekanth, T., N. Lakshminarasamma, and Mahesh K. Mishra. "A Single-Stage Grid-Connected High Gain Buck–Boost Inverter With Maximum Power Point Tracking." IEEE Transactions on Energy Conversion 32, no. 1 (2017): 330–39. http://dx.doi.org/10.1109/tec.2016.2633365.

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Li, Zhi Yuan, та Xiang Ning Fan. "Design of a 0.7~3.8GHz Wideband Power Amplifier in 0.18-μm CMOS Process". Applied Mechanics and Materials 364 (серпень 2013): 429–33. http://dx.doi.org/10.4028/www.scientific.net/amm.364.429.

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The design of a 0.7~3.8GHz CMOS power amplifier (PA) for multi-band applications in TSMC 0.18-μm CMOS technology is presented. The PA proposed in this paper uses lossy matching network and low Q multistage impedance matching network to improve wideband. To achieve maximum linearity, this PA operates in the Class-A regime. The post-layout simulation results show that the power amplifier achieves 21.9dB of power gain, 22.3dBm of 1dB compression power output at 2GHz. The power adder efficiency (PAE) at gain compression point is 17.8% at 2GHz.

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Jeong, Hayeon, Huidong Lee, Bonghyuk Park, Seunghyun Jang, Sunwoo Kong, and Changkun Park. "Optimization Technique for High-Gain CMOS Power Amplifier for 5G Applications." Applied Sciences 11, no. 24 (2021): 11691. http://dx.doi.org/10.3390/app112411691.

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In this study, a differential power amplifier (PA) with a high gain of over 30 dB by configuring a three-stage common source unit amplifier was designed. To ensure the stability of the high-gain differential PA, the analysis to apply the capacitive neutralization method to the differential common source PA was conducted. From the analysis, the required neutralized capacitance was quantitatively calculated from the estimated parasitic components of a power cell used in the PA. To verify the feasibility of the proposed optimization technique, a Ka-band PA was designed with a 65 nm RFCMOS process

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Wang, Xiao Lei, Liang Yang, and Pan Yan. "A New Engineering Model of Solar Array and MPPT Control." Advanced Materials Research 383-390 (November 2011): 591–97. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.591.

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An engineering model of solar array can reflect the real-time output voltage and current, the maximum power point voltage, the maximum power point current and the maximum power point in any light intensity and any temperature of solar arrary. A simulation model is established in Matlab/Simulink and proved the engineering model correctly and reliability. Using the method of Perturbation and Observation (P&O) and Incremental Conductance (INC) track the maximum power point of a solar array under the reference standard of these output elements, and found out the pursuit gain around the referen

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Amutha Priya, N., M. Aswin, S. J. Azis Shane, Y. Blessing Dino, and D. Dagul. "Performance Analysis of a High Gain LUO Converter-Based Hybrid PV-Wind System." Asian Journal of Electrical Sciences 10, no. 1 (2021): 1–4. http://dx.doi.org/10.51983/ajes-2021.10.1.2794.

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This project is aimed at the implementation of a fuzzy logic algorithm based maximum power point tracking in transformer less grid connected PV system along with reactive power compensation. A single diode model is used for PV array and its simulation is performed using MATLAB. In fuzzy logic controller, voltage and current are taken as inputs and the effective value of A.C current corresponding to the maximum power point is obtained as output. Thus, in addition to supplying voltage by the inverter without transformer for compensating the reactive power not exceeding its power rating. This res

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Gunasegaran, Premmilaah, Jagadheswaran Rajendran, Selvakumar Mariappan, Yusman Mohd Yusof, Zulfiqar Ali Abdul Aziz, and Narendra Kumar. "A fully matched dual stage CMOS power amplifier with integrated passive linearizer attaining 23 db gain, 40% PAE and 28 DBM OIP3." Microelectronics International 38, no. 2 (2021): 66–77. http://dx.doi.org/10.1108/mi-01-2021-0008.

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Purpose The purpose of this paper is to introduce a new linearization technique known as the passive linearizer technique which does not affect the power added efficiency (PAE) while maintaining a power gain of more than 20 dB for complementary metal oxide semiconductor (CMOS) power amplifier (PA). Design/methodology/approach The linearization mechanism is executed with an aid of a passive linearizer implemented at the gate of the main amplifier to minimize the effect of Cgs capacitance through the generation of opposite phase response at the main amplifier. The inductor-less output matching n

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Henao-Bravo, Elkin Edilberto, Carlos Andrés Ramos-Paja, Andrés Julián Saavedra-Montes, Daniel González-Montoya, and Julián Sierra-Pérez. "Design Method of Dual Active Bridge Converters for Photovoltaic Systems with High Voltage Gain." Energies 13, no. 7 (2020): 1711. http://dx.doi.org/10.3390/en13071711.

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In this paper, a design method for a photovoltaic system based on a dual active bridge converter and a photovoltaic module is proposed. The method is supported by analytical results and theoretical predictions, which are confirmed with circuital simulations. The analytical development, the theoretical predictions, and the validation through circuital simulations, are the main contributions of the paper. The dual active bridge converter is selected due to its high efficiency, high input and output voltages range, and high voltage-conversion ratio, which enables the interface of low-voltage phot

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Sharma, Vishal, Surinder Singh, and Lovkesh. "Development of frequency comb generation by spectral broadening of periodic optical pulses in semiconductor laser amplifiers." Journal of Optics 24, no. 4 (2022): 045701. http://dx.doi.org/10.1088/2040-8986/ac4c86.

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Abstract This paper reports an approach for generating an ultra-flat and ultra-wide optical frequency comb by exploiting gain modulation, experienced by a periodic third ordered Gaussian-shaped optical pulse propagating through the semiconductor optical amplifier (SOA). The gain experienced by optical signal propagating inside SOA is independent of its polarization state and phase, makes the technique more favorable and stable to the optical frequency comb generation. This paper reports a 94-line optical frequency comb with 5 dB maximum power deviation and a 190-line optical frequency comb wit

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ADEAGBO, ENOCH, WALIU APENA, and KAYODE AKINGBADE. "QUADRIFILAR HELIX ANTENNA FOR WEATHER SATELLITE RECEPTION." Journal of Engineering Studies and Research 26, no. 3 (2020): 7–18. http://dx.doi.org/10.29081/jesr.v26i3.202.

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The study designed and implemented quadrifilar helix antenna (QHA) for weather satellite signal reception. The antenna design and optimization were done by varying the element diameter, the radial lengths, the axial lengths, and element materials on adopted model. The simulated QHA has far-field radiation pattern in the upper hemisphere with maximum gain of 4.14dBi at 0o and omnidirectional coverage, half-power beamwidth of 140o, bandwidth of 6.5MHz, and VSWR of 1.13. The implemented QHA has major lobe in conformity with the simulated QHA with maximum gain of 10.75dB at 0o, and half-power beam

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Qiao, Zhong Liang, Bao Xue Bo, Si Yu Zhang, et al. "808 nm Semiconductor Lasers with Tailored Gain for Mode Shape." Applied Mechanics and Materials 84-85 (August 2011): 603–6. http://dx.doi.org/10.4028/www.scientific.net/amm.84-85.603.

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We implement the concept of the distributed electrode, which allows to improve the modal behavior of lasers and to reduce spatial-hole burning effects by preferentially localizing current injection in the center of the structure, hence discriminating the optical mode. We report the first realization of distributed electrode lasers emitting at 808 nm with the measured full width at half maximum (FWHM) angle of the minimal horizontal angle as 3.8° while the maximum continuous-wave output power is up to 4 W and high slope efficiencies as high as 0.95 W/A.

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Luo, Xiao Bin, Wei Hua Yu, De Chun Guo, and Zhi Ming Wang. "Simulation of an AlGaN/GaN HEMT for Ka-Band." Advanced Materials Research 748 (August 2013): 864–67. http://dx.doi.org/10.4028/www.scientific.net/amr.748.864.

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A physical model of 0.24μm gate-length and 50μm gate-width AlGaN/GaN HEMTs is designed in the paper including lateral structure and longitudinal material parameters. Then DC and high frequency characteristics are both simulated and analyzed. The results show that the saturation drain current is 0.8A/mm at zero bias and the maximum transconductance is 350mS/mm. The current gain cutoff frequency (fT) and maximum frequency of oscillation (fmax) are 35GHz and 107GHz respectively at -2V gate voltage and 25V drain voltage. The maximum available power gains (MAG) is 10.2dB at 40GHz. Therefore, the st

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Kawale, Praniali Surendra. "High Voltage Gain Interleaved Boost Converter with Neural Network Based MPPT Controller for Fuel Cell Based Electric Vehicle Applications." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (2021): 4728–32. http://dx.doi.org/10.22214/ijraset.2021.35499.

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As a result of the strict regulations on carbon emissions and the fuel economy, fuel cell electric vehicles (FCEV) vehicles are becoming increasingly popular in the automotive industry. This paper provides the Neural Network Maximum Power Point Tracking (MPPT) controller of the 1.26 kW Proton Exchange Membrane Fuel Cell (PEMFC), which provides electric vehicle powertrain using DC-DC power converters. The proposed neural network controls the MPPT Radial Basis Function Network (RBFN) using the PEMFC Maximum PowerPoint (MPP) tracking algorithm. High frequency switching and high DC-DC converting p

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Siva, Asapu, and Vanitha Rajendran. "A novel auxiliary unit based high gain DC-DC converter for solar PV system with MPPT control." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 4 (2022): 2386. http://dx.doi.org/10.11591/ijpeds.v13.i4.pp2386-2395.

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<span lang="HR">Solar photovoltaic (PV) system becomes popular to generate the electricity in Asian region and helps to reduce the burden to utility. The power converter plays crucial role to interconnect with DC- grid. Traditional type power DC-DC converter can able to extract the maximum power from solar PV. However, most of the applications, it often fails to meet the voltage level of the DC bus and additional converter is required to boosting p the DC voltage. In order to overcome this drawback, this paper proposes a novel DC-DC converter to extract the maximum power from solar PV an

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Vitee, Nandini, Harikrishnan Ramiah, Wei-Keat Chong, Gim-Heng Tan, Jeevan Kanesan, and Ahmed Wasif Reza. "50 MHz–10 GHz Low-Power Resistive Feedback Current-Reuse Mixer with Inductive Peaking for Cognitive Radio Receiver." Scientific World Journal 2014 (2014): 1–11. http://dx.doi.org/10.1155/2014/683971.

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A low-power wideband mixer is designed and implemented in 0.13 µm standard CMOS technology based on resistive feedback current-reuse (RFCR) configuration for the application of cognitive radio receiver. The proposed RFCR architecture incorporates an inductive peaking technique to compensate for gain roll-off at high frequency while enhancing the bandwidth. A complementary current-reuse technique is used between transconductance and IF stages to boost the conversion gain without additional power consumption by reusing the DC bias current of the LO stage. This downconversion double-balanced mixe

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Yusof, N. Roshidah, N. A. M. Ahmad Hambali, R. Othman, W. Mokhzani, and M. H. A. Wahid. "Optimization of L-Band Ring Cavity Brillouin Erbium Fiber Laser." Applied Mechanics and Materials 815 (November 2015): 380–83. http://dx.doi.org/10.4028/www.scientific.net/amm.815.380.

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In this paper, the performance of ring cavity Brillouin Erbium fiber laser (BEFL) within L-band wavelength region are discussed. Introducing Erbium doped fiber as a secondary gain medium into conventional Brillouin fiber laser configuration is the best alternative to maximize the Brillouin Stokes power (output power) and to sustain the gain flatness. Few parameters comprising length of fiber, pump power and tunable laser source power are varied to obtain the optimum output power. From the simulation process, a maximum Brillouin Stokes power of 54.75 dBm is produced as 16 dBm Brillouin pump pow

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