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1108 articles for “loss”
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Performance Analysis of Single Band PIFA for 4G/LTE Mobile Communication Networks
Abstract: This paper presents a Planer Inverted F Antenna (PIFA) for Fourth Generation (4G) Long Term Evaluation (LTE). The proposed antenna is designed on FR4 substrate and the dimension is 22.5 mm x 18.5 mm x 2.8 mm. The Antenna covers the LTE 40 frequency band application from 2.3–2.4 GHz (resonance at 2.35 GHz). Different performance parameters: return loss, VSWR, radiation pattern, current distribution, gain and efficiency are analyzed. The proposed …
Published in Journal of Microwave Engineering and Technologies · Vol. 3, Issue 3, 2016 · pp. 1–7 Read article
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Design of Ultra-Wide Band Slotted PIFA for Wireless Devices
Abstract: The design of an ultra-wideband planar inverted-F antenna (PIFA) is proposed for mobile phone applications in this paper. The different slots are introduced on radiating patch and ground plane. The volume of the radiating antenna is 40x40x3.5 mm3 which is small as compared to reported work. The ultra-wide bandwidth with acceptable return loss –6 dB is obtained from 4.6 to 30 GHz with good matching and radiation characteristics. Different performance …
Published in Journal of Microwave Engineering and Technologies · Vol. 3, Issue 2, 2016 · pp. 1–6 Read article
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N-Shape Dielectric Resonator Antenna for Wireless Communication
Abstract: A new compact dielectric resonator antenna (DRA) for ultra-wideband (UWB) is presented and studied. This antenna is designed on FR4 substrate with dielectric constant of and overall size of proposed DR antenna is 20×35 mm2. The dielectric resonator of N-shape is only of 5.12 mm thickness and has a very low permittivity constant (10.2). The simulated DR antenna operating from 4.4 to 11.7 GHz covers most of the existing wireless …
Published in Journal of Microwave Engineering and Technologies · Vol. 3, Issue 2, 2016 · pp. 13–18 Read article
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Study on Wireless Power Transmission using Microwave Technique: Principle and Applications
Abstract: In this paper, a review about the concept of wireless power transmission is presented. Wireless power transmission means, the power is transmitted in the form of microwaves from one place to another, in order to reduce losses during the transmission and distribution of electrical power; and also to deliver energy in location where conventional wires are expensive, inconvenient or impossible. This is also known as microwave power transmission. We present …
Published in Journal of Microwave Engineering and Technologies · Vol. 3, Issue 2, 2016 · pp. 31–35 Read article
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A Compact Umbrella Shaped Patch Antenna using DGS for Dual/Triple/Quad Band Applications
Abstract: In this paper, a compact Umbrella shaped microstrip patch antenna for Quad band applications specially for X band, Ku band and K band applications is presented. The antenna is simulated using the Ansys soft HFSS simulator. The size of the antenna is 25 mm×25 mm ×1 mm and printed on an FR4 substrate. Defected ground structure in the form of concentric circular rings is used to increase the bandwidth of …
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 3, 2015 · pp. 36–44 Read article
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Design and Analysis of Microstrip Band Stop Filter with Modified Circle and Dumbbell Shape Ground Structure
Abstract: In this proposed paper the performance of Band stop filter with modified ground structure is analyzed in this specific work; the modified ground structure includes a circle and dumbbell etched shapes in ground plane. Parameters of the proposed configuration were calculated at the cut off frequencies of f1=1 GHz, f2=1.62GHz and also proposed designs having substrate height of 1.6 mm, loss tangent of 0.02 and dielectric constant of 4.4. Results …
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 2, 2015 · pp. 26–31 Read article
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Development of Bandwidth Enhanced Microstrip Patch Antenna for UMTS Application
Abstract: In this article, a low-profile microstrip patch antenna for UMTS application is presented. A wideband coaxial probe-fed slotted microstrip patch antenna has been simulated on IE3D software to give a wide bandwidth of 31.34% and tested successfully. The simulated and measured results in terms of return loss show good agreement.
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 1, 2015 · pp. 14–20 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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Split Ring Resonator Based Dual Frequency Microstrip Patch Antenna For Wireless Applications
Abstract: The objective of the work is to design a compact dual frequency microstrip antenna (MSA) at GSM 1800 MHz and ISM (2.4 GHz). The proposed MSA incorporates a rectangular patch with an inverted U slot printed on the top of RT duroid 5880 substrate with thickness of 0.8mm and dielectric constant of 2.2. The dimensions of the patch are optimized as 45x 54 mm2. It is fed by coaxial feeding. …
Published in Journal of Microwave Engineering and Technologies · Vol. 9, Issue 2, 2022 · pp. 1–14 Read article
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Design and Analysis of A Terahertz Microstrip Antenna
Abstract: Terahertz radiation is in the electromagnetic spectrum. Terahertz radiation is used for a variety of purposes since it is non-ionizing and may move in a straight line. It has some similarities with microwaves, in that terahertz radiation can penetrate non-conducting materials, but it shows less depth of penetration than microwaves. Compared to millimeter waves the capacity of Terahertz waves is large enough and possesses high data transmission rates. Terahertz radiation …
Published in Journal of Microwave Engineering and Technologies · Vol. 10, Issue 1, 2023 · pp. 1–7 Read article
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Emissivity and Dielectric Behavior of Red Soils of Dhule District at X-band Microwave Frequencies
Abstract: Using X-band (8.2 and 10.5GHz) experimentation, the fluctuation of the dielectric constant (ε’) and dielectric loss (ε’’) of soil samples with different moisture contents has been determined. After reaching a transition point, the value of (ε') grows gradually with moisture content before increasing quickly after that. The emissivity has been estimated from experimentally determined (ε’) using emissivity model for vertical polarization. The findings indicate that as MC/dielectric constant increases, emissivity …
Published in Journal of Microwave Engineering and Technologies · Vol. 10, Issue 3, 2023 · pp. 23–30 Read article
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Survey on Fractal Microstrip Antenna for Multiband 5G Application
Abstract: In the paper, a two-iteration fractal structure antenna—based on the advantages of fractal geometry and incorporating the principles of conventional microstrip antenna design and resonant coupling technique—is studied for third generation (3G), fourth generation (4G), fifth generation (5G), WLAN, and Bluetooth wireless applications. Antenna radiators were shown to have a fractal structure, much like a tree in the wild. The length of the radiator in a limited space can be …
Published in Journal of Microwave Engineering and Technologies · Vol. 10, Issue 3, 2023 · pp. 16–22 Read article
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EXPERIMENTAL STUDY AND ANALYSIS OF COMPRESSIVE STRENGTH IN NOBAKE SAND
Abstract: No bake molds are expendable sand molds, similar to typical sand moulds, except they also contain a quick-setting liquid resin and catalyst. In no bake molding process the moulding sand is poured into the flask and held until the resin solidifies, which occurs at room temperature. It is called as a cold-setting process, as there is no heat involved in it. As a result of this molding process, mold produced …
Published in Journal of Materials & Metallurgical Engineering · Vol. 8, Issue 2, 2018 · pp. 18–22 Read article
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Effect of Cryogenic Treatment on Wear Characteristics of T42 High Speed Steel
Abstract: In this study cryogenic treatment is performed on AISI T42 HSS material and its wear characteristics are studied. Test of treated and untreated samples is taken on pin on disc wear testing machine at different loads and RPMs. The wear of the sample is measured. The wear resistance of the samples is also measured by weight loss method. The results are tabulated. An experimental effort to evaluate tool wear improvement …
Published in Journal of Materials & Metallurgical Engineering · Vol. 6, Issue 2, 2016 · pp. 70–79 Read article
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Corrosion Behavior of Ferritic Steel, Austenitic Steel and Low Carbon Steel Grades in Sugarcane Juice
Abstract: The objective of the present study is to evaluate the corrosion behavior of ferritic grade AISI 444 and to compare its performance with the austenitic grade AISI 304 and low carbon steel AISI 1010 in the corrosive medium of raw sugarcane juice. General corrosion and pitting corrosion behavior of AISI 444, AISI 304 and AISI 1010 steels in sugarcane juice was investigated using traditional weight loss method and cyclic polarization …
Published in Journal of Materials & Metallurgical Engineering · Vol. 2, Issue 1-3, 2012 · pp. 43–56 Read article
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Eco-friendly Corrosion Inhibitors for N80 Steel in Hydrochloric Acid
Abstract: An important method of protecting metallic materials against deterioration due to acid corrosion is by the use of corrosion inhibitors. In the present investigation, corrosion inhibition study of two compounds,1-(2-hydroxyethyl)-2-ethylimidazoline(Inh I) and 1-(2-hydroxyethyl)-2-decylimidazoline (Inh II) have been performed for oil-well tubular steel (N80) in 15% HCl using weight loss, electrochemical polarization, AC impedance and SEM. The inhibition efficiencies of the inhibitors follow the sequence, Inh II > Inh I. The …
Published in Journal of Materials & Metallurgical Engineering · Vol. 2, Issue 1-3, 2012 · pp. 71–83 Read article
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Optimization of Wear and Friction Parameters of Al-WC Composite Using Response Surface Methodology
Abstract: This paper aims to optimize the wear and friction parameters of Al-WC composite using response surface methodology. Initially dry sliding wear test on specimen of Al-0WC, Al-5WC, Al-8WC and Al-11WC composites were performed using pin-on-disc equipment under atmospheric conditions, with the varying parameters of the applied load 80KN and Sliding distance 6700m and the sliding velocity is kept constant of 3.34 m/s. The optimum parameters of wear mass loss and …
Published in Journal of Materials & Metallurgical Engineering · Vol. 9, Issue 3, 2019 · pp. 17–26 Read article
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Raspberry PI Based Automation and Security of Pisciculture
Abstract: AbstractIn Pisciculture natural disasters, mistake of employees, irregular feeding causes mass mortality of fish, such incident may cause a big loss of farmer so to avoid that thing we are presenting smart growing pisciculture. With the progress in raspberry pi the innovation is achieved by the ground level with it’s application in aquaculture and farming. In this work we have outlined and actualized the fish growth fish feeding water leveland, …
Published in Journal of Microelectronics and Solid State Devices · Vol. 7, Issue 2, 2020 · pp. 17–20 Read article
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Review of Low Power Johnson Counter
Abstract: Due to the use of clock gating the authors have achieved a power reduction of 37.12 to 41.08% for different frequencies. The authors have run T-Spice simulations for conventional design and clock-gated Johnson counter design. There is a huge difference in the power consumption of the two designs. The clock-gating logic gives this change. And as a 2-input flip-flop is used instead of 3-input flip-flop plays a remarkable role in …
Published in Journal of Microelectronics and Solid State Devices · Vol. 2, Issue 1, 2015 · pp. 13–17 Read article
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Solution of Different Problems Related to Active Power Filter Design Using Python
Abstract: ABSTRACTThere are a variety of problems that lead to problems of rising losses and degradation in power quality in AC due to harmonic distortions, voltage sag, voltage spike, flicker, voltage swell, voltage fluctuations, noise and voltage imbalance. In this paper, different problems are analysed and based on their circuit type, input and output value of voltage and current VSI circuit is designed to increase performance in the system. In AC …
Published in Journal of Microelectronics and Solid State Devices · Vol. 9, Issue 3, 2022 · pp. 1–8 Read article