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915 articles for “bands”
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Design and Analysis of I-Slotted Rectangular Microstrip Patch Antenna for Wireless Application
Abstract: AbstractThis paper presents a novel design of an I-slotted patch antenna with compact nature and the study of various antenna parameters. The antenna is fed by the inset-feeding technique. The proposed patch antenna is designed and simulated on IE3D simulation software (Zeland program manager 9.0). The main aim of the proposed work is to design a large-bandwidth antenna with compact size. The proposed microstrip antenna has a wide bandwidth covering …
Published in Journal of Communication Engineering & Systems · Vol. 3, Issue 3, 2013 · pp. 36–40 Read article
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Wavelength Division Multiplexing in Optical Networks Using Radio Over Fiber
Abstract: AbstractThis paper contains a detailed study about WDM (wavelength division multiplexing) optical networks. The bandwidth, speed and loss of signals in communication have a reason to worry in communication systems; WDM makes the possible solution to resurrect the systems of communications with the help of this technology. The issue emerges when the interest for transfer speed in a fiber optic system surpasses the present limit, without requiring any extra fiber, …
Published in Journal of Communication Engineering & Systems · Vol. 9, Issue 3, 2019 · pp. 12–15 Read article
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Human Gesture Based Wireless Robotic Arm Using Matlab
Abstract: Wireless motion control using human gestures is a prominent field. Once this field gets completely explored, there are a lot of advantages. The main advantage of this paper is to reduced hardware, thus making user-friendly motion control. The primary goal of the project is to control every real-time motion of an arm based 4-wheel drive using wearable colored finger bands of suitable intensity. Each color movement corresponds to a particular …
Published in Research & Reviews: A Journal of Embedded System & Applications · Vol. 6, Issue 1, 2018 · pp. 25–28 Read article
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Music on Mind and Body: A Simultaneous EEG and EMG Study to Quantify Emotions from Hindustani Classical Music
Abstract: With the advent of various techniques to assess the bioelectric signals on the surface of the body, it has become possible to develop various human-computer interface systems. In this study, for the first-time a cross- correlation based data is reported for two-different types of bio-signals viz. EEG (Electroencephalography) and EMG (Electromyography). Whereas EEG refers to the neuro-electric impulses generated in the brain recorded in the form of electric potentials, EMG …
Published in Research and Reviews: A Journal of Neuroscience · Vol. 9, Issue 2, 2019 · pp. 27–38 Read article
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Implementation of Terahertz Communication Link
Abstract: Abstract: With the unending augmentation in the number of mobile-related devices and the prerequisite for higher data rates anywhere, at any point, higher frequency bands are being considered for communications. As wave technology moves from searching the business game plans, and induced by the confined bandwidth, the terahertz antenna (THz) band is envisioned as the other lines for communications. Concerning vehicular systems, communications are at much higher frequencies and, in …
Published in Journal of Mobile Computing, Communications & Mobile Networks · Vol. 6, Issue 3, 2019 · pp. 5–11 Read article
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Quadruplet Circular Hollow Ring Structure to Ameliorate RMPA parameters for WLAN
Abstract: A Rectangular Microstrip Patch Antenna with “Quadruplet circular hollow rings” shaped metamaterial cover is designed and replicate at a height of 3.2 mm from the ground plane. The antenna along with the proposed metamaterial cover is designed to resonate at 2.21 GHz frequency (in S-Band). But the proposed metamaterial cover significantly reduces the return loss and increases the bandwidth and efficiency of the antenna in comparison to rectangular microstrip patch …
Published in Journal Of Network security · Vol. 1, Issue 1, 2013 Read article
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Performance Analysis of FFT-OFDM and DWT-OFDM and Its Implementation
Abstract: Orthogonal frequency division multiplexing (OFDM) is a unique scheme of multicarrier transmission where a single data stream is transmitted over a number of lower rate subcarriers. OFDM is a promising technology for good bandwidth efficiency. Recently, a worldwide convergence has occurred for the use of OFDM as an emerging technology such as Wi-Max, IEEE802.11a, 4th generation long term evolutionary (LTE), DVB etc., have adopted the OFDM technology as a mean …
Published in Recent Trends in Electronics Communication Systems · Vol. 3, Issue 1, 2016 · pp. 1–8 Read article
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Signaling Techniques in Telecommunication Network
Abstract: The importance of wearable products such as wearable textile antenna is increasing day by day because of the recent miniaturization of wireless devices. In the last few years it has received a vast amount of attention due to utilization in smart clothing and future consumer-centric communication technologies. The main challenges for designing textile antennas are low weight, low profile and low cost. The fabrication technique and the use of materials …
Published in Recent Trends in Electronics Communication Systems · Vol. 3, Issue 1, 2016 · pp. 48–55 Read article
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Design and Performance Analysis of Different UWB Modified Circular and Ring-shaped Microstrip Patch Antennas
Abstract: The importance of wearable products such as wearable textile antenna is increasing day by day because of the recent miniaturization of wireless devices. In the last few years it has received a vast amount of attention due to utilization in smart clothing and future consumer-centric communication technologies. The main challenges for designing textile antennas are low weight, low profile and low cost. The fabrication technique and the use of materials …
Published in Recent Trends in Electronics Communication Systems · Vol. 3, Issue 1, 2016 · pp. 9–28 Read article
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Li-Fi Technology: A Review
Abstract: Light-Fidelity (Li-Fi) takes visible light communication (VLC) further by using light emitting diodes (LEDs) to realise fully networked wireless systems [1]. One German physist Harald Hass has come up with a solution for most likely gotten frustrated at the slow speeds you face when more than one device is tapped in to the network, he calls “data through illumination” by sending data through an LED light bulb that varies in …
Published in Recent Trends in Electronics Communication Systems · Vol. 3, Issue 2, 2016 · pp. 26–32 Read article
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Compact Arrow Shape Microstrip Antenna for WiMAX Application
Abstract: Abstract In this paper, microstrip patch antenna dual band which is used for personal communication system and wireless local area network has been discussed. The two bands of ranges 1.72–2.008 GHz (15.43%) and 2.7–3.964 GHz (37.93%) are obtained. The antenna is fed by coaxial cable probe feeding technique. The microstrip patch antenna is designed on the glass epoxy substrate having dielectric constant 4.4 and simulated on the IE3D Zealand software. …
Published in Recent Trends in Electronics Communication Systems · Vol. 3, Issue 3, 2016 · pp. 24–28 Read article
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Development of a DSP Prototype on QPSK Modulator and Demodulator Using Code Composer Studio for Radio Communication Systems
Abstract: As day by day there is increase in mobile telephone users, the bandwidth requirement for each user is mutually increasing. Due to this there is spectral congestion caused and drastic improvements have been taken in the field of mobile communications. Numerous approaches are taken to minimize the bandwidth requirement of each user. One such approach is called as quadrature phase shift keying (QPSK) technique for mobile and satellite applications. QPSK …
Published in Recent Trends in Sensor Research & Technology · Vol. 1, Issue 2, 2014 · pp. 7–15 Read article
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Analysis of Microstrip H-Shaped Patch Antenna as a Moisture Sensor
Abstract: There are certain advantages of microstrip patch antenna having low cost, low profile antenna. But inspite of that there are certain disadvantages also like low bandwidth, low efficiency, complexity. This paper introduces the potential of the H-shaped microstrip antenna using DGS multiband as a microstrip sensor for bandwidth improvement and developed a relationship between return loss and frequency. This is simulated at CST software and the result was measured on …
Published in Recent Trends in Sensor Research & Technology · Vol. 2, Issue 3, 2015 · pp. 1–8 Read article
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Deteriorated Square Microstrip Patch Antenna
Abstract: This paper contains microstrip patch antenna designed by way of coaxial feed technique. The antenna is mainly intended to be used for WiMAX middle band (3.25-3.85 GHz) wireless applications. The result shows that wide bandwidth of 68.46% is obtained covering the frequency range from 2.32 to 4.73 GHz. The characteristics of the designed structure are investigated by using MoM based on electromagnetic solver, IE3d. In the end, an extensive analysis …
Published in Recent Trends in Sensor Research & Technology · Vol. 4, Issue 1, 2017 · pp. 13–17 Read article
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2.9 GHz Plus Slotted Square Microstrip Patch Antenna
Abstract: This paper contains microstrip patch antenna designed by way of coaxial feed technique. The antenna is mainly intended to be used for WiMAX middle band (3.25–3.85 GHz) wireless applications. The result shows that wide bandwidth of 68.46% is obtained covering the frequency range from 2.32 to 4.73 GHz. The characteristics of the designed structure are investigated by using MoM based on electromagnetic solver, IE3d. In the end, an extensive analysis …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 3, Issue 3, 2016 · pp. 16–20 Read article
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Clipping of Precoded OFDM in Cognitive Radios
Abstract: To provide reliable and opportunistic utilization of the radio electromagnetic spectrum, cognitive radio (CR) has been proposed as an intelligent technology that provides dynamic spectrum access for users by opportunistically utilizing even the licensed spectral bands. Orthogonal frequency division multiplexing (OFDM) is considered by many to be an effective multicarrier transmission technique for the implementation of CR system transmissions due to its flexible spectrum access. Out-of-band (OOB) radiation of an …
Published in Current Trends in Signal Processing · Vol. 4, Issue 3, 2014 · pp. 1–7 Read article
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Morphological, Optical and Structural Studies of Deposited ZnO Films by SILAR Method for Solar Energy Applications
Abstract: The deposited ZnO films were grown on glass substrates using the Successive Ionic Layer Adsorption and Reaction. The morphology of the deposited ZnO is that of flower-like bud.The optical properties were characterized using UV/VIS spectroscopy, the optical band gap decreases with increasing reaction time, and these films have band gap values of 3.19eV, 3.22eV, 3.24eV and 3.25eV. The crystal structure of the films were also characterized using the X-Ray Diffraction …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 4, Issue 3, 2013 · pp. 7–12 Read article
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Optimization of i-Layer of a-Si: H p–i–n Solar Cell in an Indigenously Developed PECVD System
Abstract: Single-junction hydrogenated amorphous silicon solar cells have been successfully fabricated using indigenously developed radio frequency-plasma enhanced chemical vapor deposition (RF-PECVD) technique. The software-controlled PECVD system enables deposition and optimization of layers and solar cell device using a cluster 5 process chambers. In the present work, several experiments have been carried out by varying the critical process parameters in order to optimize the i-layers for obtaining efficient hydrogenated amorphous silicon (a-Si:H) …
Published in Journal of Instrumentation Technology & Innovations · Vol. 5, Issue 3, 2015 · pp. 32–36 Read article
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Future Refrigerator which Does Not Require Compressor
Abstract: It sounds crazy a refrigerator made from a rubber band. But if one stretches a rubber band and hold it against one's lips, it will be noticeably warmer. If it is released, it cools. This simple "elastocaloric" effect can transfer heat in much the same way as compressing and expanding a fluid refrigerant in a fridge or air conditioner. Now, researchers have created a version that not only stretches the …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 7, Issue 1, 2020 · pp. 41–44 Read article
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Synthesis, Properties and Applications of Amorphous Carbon Nanotube and MoS2 nanosheets: A Review
Abstract: Recently, carbon nanotube have been showing great interest in the field of nanotechnology for its exceptional physical, electronic properties. The synthesis procedure of crystalline carbon nanotube are immensely tough for which researchers are focused on amorphous carbon nanotube. Furthermore the presence of dangling bonds in amorphous carbon nanotube makes it easily reactable with other nanomaterial to form into nanohybrids. This nanohybrids are quite challengeable to crystalline carbon nanotube in various …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 21, Issue 1, 2019 · pp. 36–52 Read article