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16 articles for “Reflectors”
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Review and Analyze Low Cross Polarized Feed for Offset Parabolic Reflector Antenna for S-Band Application
Abstract: This study discusses the design of low cross polarized feed for offset parabolic reflector antenna and its application. Conical corrugated horn antenna consists of an input mode TE11 and the corrugation part requires a transition to HE11 mode for propagation. The paper presents the widely used design of TE11-HE11 mode converter i.e. Variable slot mode converter. Three different design of corrugated horn antenna is presented for optimizing the value of …
Published in Journal of Communication Engineering & Systems · Vol. 8, Issue 3, 2018 · pp. 30–36 Read article
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Comparative Analysis of Parabolic Trough Solar Water Heater by Using Different Reflectors with and without Glass Cover
Abstract: Abstract All forms of energy on earth are derived from solar energy, so it is the primary source. Demand of energy consumption in today’s era is increasing continuously; this puts the burden on our conventional energy sources like coal, petroleum, natural gas etc. which are limited and can exhaust in future if not managed by alternate sources. So, use of solar energy for various energy generation processes is best option …
Published in Journal of Water Pollution & Purification Research · Vol. 4, Issue 2, 2017 · pp. 1–7 Read article
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Design and Analysis of Serial Manipulator for Carrying Unfurlable Antenna Reflector
Abstract: Deployable structures are foldable structures in defined manner, either for conveyance or for storage. The primary usage of deployable structures is for use in space because of restricted size of launch vehicle. The main purpose of this study is to design & outline deployable Serial Manipulator which carries unfurlable antenna reflector. Serial arm having three degree of freedom is taken into consideration for lab demonstration model. The primary objective of …
Published in Journal of Advancements in Robotics · Vol. 5, Issue 3, 2018 · pp. 26–32 Read article
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Performance Optimization of Reflectors Integrated Flat Plate Solar Collector for Water Heating
Abstract: As the demand for energy is increasing day by day, so to compensate that they use renewableenergy is the best choice in these days. Solar energy is one of the best renewable energyresources. A flat solar collector is using to heat water for domestic as well as commerciallevels. In this research, optimization of the thermal efficiency of a flat solar collector is done,reflector angle, day time and flow rate are …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 11, Issue 3, 2020 · pp. 24–32 Read article
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Polymer and Polymer-Metallic Reflective Materials for Solar Thermal Applications: A review
Abstract: Reflective materials play a critical role in determining the optical and thermal performance of solar thermal systems by controlling the concentration and utilization of incident solar radiation. This review examines the application and performance of polymer-based and polymer-metallic reflective materials for solar thermal applications, with particular emphasis on their suitability for solar cookers and concentrating solar technologies. Four commonly used reflector materials—aluminum foil, anodized aluminum, Mylar (metallized polyester film), and …
Published in Journal of Polymer & Composites · Vol. 14, Issue 5, 2026 Read article
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A Novel Technique for Improvement in Front-to-Back Ratio of MSA for WLAN/WiMAX using Corrugated Dielectric Substrate as a Reflector
Abstract: In this paper the design of a microstrip antenna (MSA) with corrugated dielectric reflector is proposed to improve the front-to-back ratio (FBR) and reduce the back lobes in radiation pattern of the antenna. The designed antenna operates at 5.8 GHz and simulated on CSTMWS’10 software. Simulation results show that proposed antenna has 21.8 dB higher FBR than that of conventional MSA.
Published in Journal of Electronic Design Technology · Vol. 6, Issue 1, 2015 · pp. 25–29 Read article
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Performance Analysis of Solar Steam Generation System: A Review
Abstract: A solar powered air heating system using parabolic trough collector was experimentally investigated. This paper describes construction and testing of a parabolic dish solar steam generator. By using sun heat with the help of parabolic collector concentrated on black absorber which is located at focus point of reflector; which heated water at high temperature considering different specifications and find out variation of temperature with different time, maximum temperature and temperature …
Published in Journal of Thermal Engineering and Applications · Vol. 2, Issue 2, 2015 · pp. 9–15 Read article
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A Review of Potential, Generation and Factors of Solar Energy
Abstract: AbstractPower is the integral part of today’s life. Renewable energy is the demand of time because of its great advantages like non-pollutant, abundant etc. Among all the energy sources, solar energy is most promising, quiet and clean source of energy. India receives great amount of solar radiation throughout its boundaries. This study is to review the potential of solar energy in India, it’s technological development and factors of solar cell.Keywords: …
Published in Journal of Thermal Engineering and Applications · Vol. 5, Issue 2, 2018 · pp. 1–4 Read article
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Thermal Performance Analysis of a Solar Dryer-cum-Air Heater with Modified Absorber Surface
Abstract: Abstract The use of solar resource for food drying has always been a food preservation technique which has widely been practised in most parts of the world. The solar drying system utilizes solar energy to heat up air and to dry food substance placed in dryer, which is beneficial in reducing wastage of food products and helps in preservation of the same. Unfortunately, some of the methods practised in the …
Published in Journal of Thermal Engineering and Applications · Vol. 3, Issue 3, 2016 · pp. 34–40 Read article
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A Review: The Design of Photovoltaic Thermal Technology with Compound Parabolic Concentrator
Abstract: In this paper, photovoltaic cell with compound parabolic solar concentrator has been studied. The interior surface is covered with the reflector. The use of photovoltaic thermal system in combination with concentrating reflectors has a potential to significantly increase power production from a given solar cell area. The absorber of the combined photovoltaic/thermal (PV/T) collector under investigation consists of a module of solar cells for generating electricity, compound parabolic concentrator (CPC) …
Published in Journal of Thermal Engineering and Applications · Vol. 3, Issue 2, 2016 · pp. 38–45 Read article
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Pattern Reconfigurable Yagi-Uda Antenna
Abstract: This study proposes a prototype of a reconfigurable Yagi-Uda Antenna that is capable of reconfiguration of the radiation pattern. The proposed flexible antenna will work as the director, and reflector can be switched in a Yagi-Uda set up antenna by using a radio frequency PIN diode. The radiating signals can be directed at desired signals away from undesirable signals that are impinging on the antenna in opposite directions. The antenna …
Published in Journal of Microwave Engineering and Technologies · Vol. 12, Issue 3, 2025 · pp. 14–20 Read article
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X- Band Microstrip Antenna for Radar and Amateur Radio Service
Abstract: Microstrip antennas and arrays are used as an alternative for the bulky and heavy weight reflector/slotted waveguide array antennas. For radars which demand a low profile, light weight antenna subsystem, the microstrip antennas are an ideal choice. The proposed antenna is designed in the X-band for the radar and missile application. It is a dual band antenna with resonant frequency of 8.5 GHz and 10.132 GHz having return loss 38.59 …
Published in Journal of Electronic Design Technology · Vol. 3, Issue 1-3, 2012 · pp. 73–83 Read article
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Effect of 2D-EBG Structure on Monopole Antenna Radiation and Analysis of Its Characteristics
Abstract: In this paper, we present a two dimensional electromagnetic (2D-EBG) square shaped mushroom structure placed between two monopole antennas. Two artificial properties of this 2D-EBG structure such as PMC and Band Reject Region are investigated here. The radiation characteristics of a monopole antenna over this, 2D-EBG structure is tested by considering two cases. In the first case monopole antenna is made to operate within band rejection region where as in …
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 2, 2015 · pp. 1–4 Read article
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Studies on two recently commercialized scintillators for gamma-ray spectroscopy and imaging
Abstract: The present work is aimed to study some characteristics of the two recently commercialized CRY18 and CRY19 crystals (Crytur, Cz), namely the elemental compositions, and the suitability of a TiO 2 -based white-pigment as light-reflector around the blind faces of the scintillators. The energy dispersive X-ray fluorescencetechnique has been used for the first goal while the second one has been performed by comparing the emission spectrum of the first crystal …
Published in Journal of Nuclear Engineering & Technology · Vol. 12, Issue 2, 2022 · pp. 24–32 Read article
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Non-linear Photonic Crystals and their Applications: A Review
Abstract: The nonlinear photonic crystals (NLPCs) are periodic material structures in which nonlinear materials are used for photonic structure formation. In nonlinear photonic crystals, the optical response mainly depends on the intensity of the light beam that propagates through the photonic crystal. These structures show new optical properties with improved or enhanced or new functionalities that cannot be observed in linear photonic crystals. In addition to this, using nonlinear materials in …
Published in Trends in Opto-electro & Optical Communication · Vol. 12, Issue 2, 2022 · pp. 36–39 Read article
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To Assess Preferred Learning Styles among Nursing Students at Selected Colleges of Nursing, Haryana
Abstract: The purpose of the study was to assess and identify preferred learning styles among nursing students. The aim was to understand learning styles that could be considered as a key component of managing classroom teaching strategies. The descriptive study involved two nursing colleges with 100 nursing students. A standardized Honey and Mumford learning style questionnaire was used to assess preferred learning styles. The majority of nursing students were having reflector …
Published in Journal of Nursing Science & Practice · Vol. 5, Issue 2, 2015 · pp. 28–30 Read article