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915 articles for “bands”
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Design and Performance Analysis of an UWB Wearable Patch Antenna for WBAN Applications
Abstract: In this paper we represent an ultra-wide band wearable textile antenna for body area network. The proposed antenna consists of a decagonal radiating patch and a partial ground plane with a square slot. For textile antenna, the textile materials and the planer shapes provide a smooth integration into clothing while preserving the characteristic properties of the textile. The ultra-wide band for these types of antenna is achieved by optimizing the …
Published in Journal of Communication Engineering & Systems · Vol. 7, Issue 3, 2017 · pp. 1–7 Read article
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Microstrip Leaky-Wave Antenna with Reduced Ground Plane
Abstract: ABSTRACT This paper is aimed to find the microstrip leaky-wave antenna. The above antenna has become interesting due to its simple shape and geometry. This paper uses a reduced ground plane which can improve the bandwidth of the proposed antenna. This antenna has been simulated on CST-microwave suit software and got fabricated on PCB. The simulated measurements show that the proposed antenna achieves an operating bandwidth of 800 MGHz for …
Published in Journal of Communication Engineering & Systems · Vol. 2, Issue 3, 2012 · pp. 33–37 Read article
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Compact Printed Coplanar Waveguide-fed UWB/Bluetooth Integrated Antenna for Wireless Personal Area Network Communication
Abstract: AbstractA compact integrated Bluetooth and ultra-wideband (UWB) coplanar waveguide (CPW)-fed antenna is presented and discussed. In this paper, the designed antenna has got specialty having wide coverage of Bluetooth and UWB frequency band both successfully giving optimum performance and above all small size. It has been designed very compact retaining all the standard parameters like VSWR, radiation pattern and gain to the acceptable level. The integrated dual-band antenna covering 2.4–2.484 …
Published in Journal of Communication Engineering & Systems · Vol. 3, Issue 2, 2013 · pp. 9–14 Read article
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Design of Ultra Wideband Square Aperture Shaped Microstrip (ASM) Antenna
Abstract: AbstractA compact coplanar waveguide-fed (CPW) microstrip antenna for ultra-wideband (UWB) wireless communication is presented. The antenna comprises a square aperture (24 mm × 24 mm) etched on the ground-plane of a printed circuit board and a modified rectangular shaped stub, also total size of the antenna is 30 mm × 30 mm. The lower edge of the band is attained by properly decoupling the resonant frequencies due to proper selection …
Published in Journal of Communication Engineering & Systems · Vol. 3, Issue 2, 2013 · pp. 15–19 Read article
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Beejdushti: A Conceptual Study
Abstract: The appreciation of genetic factors as arbiters of human disease is a relatively recent development in medical history. Scattered references to inheritance of biological characteristics may be found in the records of several millennia. In which comes the Ayurvedic texts. In Ayurvedic texts the genetic concept of inheritance is beautifully described in Caraka Sharir Sthan. Although Other Authors also described in direct or indirect way the genetic basis of inheritance …
Published in Journal of AYUSH: Ayurveda, Yoga, Unani, Siddha and Homeopathy · Vol. 4, Issue 2, 2015 · pp. 48–53 Read article
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T-Shape Antenna with Defected Ground for 5G Applications
Abstract: In this paper, for 5G cellular applications, a novel microstrip patch antenna with high gain and wide bandwidth MMW frequencies is presented. The antenna is designed as single T-shaped radiating patch on the top layer of substrate and for improving the bandwidth and return loss characteristics, partial ground is incorporated on the bottom plane. A 50Ω matched lumped port is used for the feeding. In addition, the proposed antenna is …
Published in Journal of Mobile Computing, Communications & Mobile Networks · Vol. 6, Issue 1, 2019 · pp. 23–27 Read article
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A Compact Spiral Shape Microstrip Path Antenna
Abstract: Abstract In this article, novel design is proposed to develop a microstrip patch antenna for 1.70–2.60 GHz frequency with bandwidth 41.8%. In this paper, the design of proposed antenna has the dimensions 37.8×46.0 mm, dielectric constant 4.4 and substrate thickness of 1.6 mm. The simulated result of proposed antenna such as bandwidth, return loss and smith chart is presented. The proposed antenna is simulated with the help of IE3D simulator …
Published in Journal of Microwave Engineering and Technologies · Vol. 3, Issue 3, 2016 · pp. 13–18 Read article
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A Defected Ground Textile Antenna for Bluetooth/WLAN Applications
Abstract: A novel design of a slotted antenna for Bluetooth & WLAN Applications is presented in this paper. Modifications of the initial rectangular design for improving return loss and bandwidth are proposed and discussed. The proposed antenna was successfully developed by using CST Microwave Studio and fabricated prototype by using jeans substrate and copper tape. The proposed textile antenna covers a wide impedance bandwidth of about 81.46 %. The proposed antenna …
Published in Recent Trends in Electronics Communication Systems · Vol. 3, Issue 2, 2016 · pp. 1–8 Read article
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Design and Characterization of Microstrip Patch Antenna for Wi-Max Applications
Abstract: Abstract A rectangular slot printed rectangular microstrip patch antenna which is simulated on epoxy/glass material has been proposed. The antenna bandwidth of 46.7 MHz is achieved with a lower frequency 3.475 GHz to a higher frequency 3.522 GHz achieved by taking four rectangles of dimensions 27 x 30 mm2 are arranged in such a manner to achieve the WI-MAX frequency band with a resonant frequency of 3.5 GHz, respectively. Other …
Published in Recent Trends in Electronics Communication Systems · Vol. 3, Issue 3, 2016 · pp. 15–18 Read article
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The Use of Satellite Imagery in Estimating Aboveground and Belowground Biomass of Aquatic Vegetation, The Food Source of Waterfowl
Abstract: 800x600 In this research we studied the possibilities to estimate the biomass of aquatic vegetation in a shallow lake using IKONOS image. IKONOS-2 image, with one infrared and three visible bands, was obtained on the 19th of August 2005. The study was carried out in the Lauwersmeer (The Netherlands) that Bewick’s swans use as an autumn staging site to forage on the belowground biomass of fennel pondweed. This research gave …
Published in Journal of Remote Sensing & GIS · Vol. 6, Issue 2, 2015 · pp. 33–40 Read article
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Efficiency of Garamycin for the Control of Bacterial Disease: Flacherrie in the Larval Instars of Silkworm, Bombyx mori (L) (Race: Double Hybrid)
Abstract: Flacherrie, the bacterial disease is the most significant parameter associated with the loss of silk yield. The loss of appetite; discharge watery feces and vomiting are the common symptoms of infection of bacteria to the larval instars of silkworm, Bombyx mori (L). The present attempt is dealing with utilization of antibiotic compound for the control of bacterial disease: flacherrie in the larval instars of silkworm, Bombyx mori (L) (Race: Bivoltine …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 11, Issue 2, 2020 · pp. 1–16 Read article
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Review on CBIR Image Based on Colour, Texture and Shape Features of Biomedical Image Applications
Abstract: This study seeks to understand how different image enhancing methods affect the sensitivity of contrast-based textural measures and morphological traits derived from high-resolution satellite data (three-band SPOT-5). The built-up/non-built-up detection framework is the backbone of every biomedical application. Using supervised learning while working with a low-resolution reference layer reduces uncertainty and boosts the reference layer's quality in a roundabout way. The image's histogram is recalculated based on contrast in order …
Published in Journal of Image Processing & Pattern Recognition Progress · Vol. 11, Issue 1, 2024 · pp. 8–13 Read article
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Structures and sensors of Polymer Optical Fibers for Last Mile Networks
Abstract: Originating from distinct concepts for transferring information, sensing, or lighting efficiency, fiber characteristics vary greatly throughout their range. A substantial bandwidth-length product with acceptable attenuation characteristics is required for effective transfer of information. Since sensor fibers are typically used over short distances having considerably lower attenuation prerequisites. This paper presents polymer optical fiber (POFs) structures that are used as sensors over conventional fiber optics.An even broader spectrum of optical characteristics …
Published in Journal of Polymer & Composites · Vol. 13, Issue 1, 2025 · pp. 166–172 Read article
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Diglycidyl Ether of Bisphenol A (DGEBA) Based Epoxy Sizing Agent Induces Surface Polarity in Carbon Fibers†
Abstract: Determination of the chemical structure and composition of the sizing agent is a challenge as its concentration is low, varying in the range from ~0.5 wt.% (for polyacrylonitrile, PAN, based carbon fibers) to ~1 wt.% (for pitch-based carbon fibers). Moreover, such a piece of knowledge is vital for designing compatible polymer matrices to prepare CFRPs for diverse applications. As a result, the sizing layer that is coated on the carbon …
Published in International Journal of Crystalline Materials · Vol. 1, Issue 2, 2024 · pp. 24–34 Read article
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Enhancing Terahertz Patch Antennas: The Role and Impact of Graphene
Abstract: Terahertz (THz) communication systems are gaining increasing attention because of their ability for high-speed wireless data transmission, making them suitable for the 6th-generation wireless applications. Patch antennas, commonly used in these systems, play a crucial role in signal transmission and reception. There are various types of conductive materials available for patch antennas, but the unique characteristics of graphene make it a suitable choice. This study explores the significance and contribution …
Published in Trends in Opto-electro & Optical Communication · Vol. 15, Issue 2, 2025 · pp. 41–51 Read article
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Facile Synthesis and Characterization of Cd²⁺ Doped NiAl₂O₄ Nanoparticles for Advanced Polymer Composite Integration
Abstract: Ni1-xCdxAl2O4, where 0 ≤ x ≤ 0.5, was successfully synthesized using the chemical co-precipitation technique, a scalable and cost-effective route suitable for composite material applications. X-ray diffraction (XRD) analysis revealed a crystalline cubic spinel structure for the resulting nanoparticles, with determined crystallite sizes ranging from 36 to 12 nm for NiAl2O4 and Cd-doped NiAl2O4. The respective band gaps for the materials were found to be 3.51 and 4.18 eV. Infrared …
Published in Journal of Polymer & Composites · Vol. 13, Issue 5, 2025 · pp. 59–72 Read article
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Integration of Multispectral Satellite data with Ensemble Machine Learning Models for Wetland Classification: a new Ramsar Site in Central India
Abstract: For biodiversity conservation, several wetlands in India have been classified as Ramsar sites, and Sirpur Lake is a recent addition to the list. The objective of this paper is to use Sentinel optical data with 10-meter resolution to prepare a robust and accurate classified map which will be crucial for further analysis. The data on thirteen spectral bands along with four essential spectral indices, Normalized Difference Vegetation Index (NDVI), Normalized …
Published in Journal of Remote Sensing & GIS · Vol. 16, Issue 3, 2025 Read article
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The Effect of Rare Earth (RE) Metal Doping of Zno, On Magnetic and Optical Properties of Zno Crystals Structure
Abstract: The magnetic and optical properties of magnetic semiconductors relays on the crystal structure, type and amount of dopant ions, and particle size. Then, the effect of rare earth metal (Dy, Eu, and La) doping on crystal structures, magnetic properties and optical properties are seen. It is revealed that the optical band gap of ZnO decrease down from 3.37eV up on doping with RE metals. Then, the Hamiltonian of the system …
Published in International Journal of Crystalline Materials · Vol. 2, Issue 2, 2025 · pp. 28–40 Read article
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Electromagnetic and Dielectric Performance of Polymer–Ceramic Composite Substrates for Fractal-Based IoT-Antenna Fabrication
Abstract: Polymer–ceramic composite substrates play a crucial role in determining the electromagnetic performance, mechanical stability, and thermal reliability of radio-frequency devices. In this work, a polymer-based composite substrate is systematically investigated for its suitability in compact IoT and RFID antenna applications. A fractal-structured antenna is employed as a functional test platform to evaluate the dielectric behavior, impedance characteristics, and radiation efficiency of the composite substrate. Novelty of the proposed reader antenna …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1518–1534 Read article
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Effective FPGA Implementation of Comb Filters to Improve Perception of Sensorineural Hearing Impaired
Abstract: AbstractIn this paper, effective method for implementation of comb filter on FPGA platform has been proposed. This work is intended for hearing aid to be used for people suffering from sensorineural hearing loss. The algorithmic implementation on FPGA is intricate during the design process. Here we propose effective and simplified approach for implementation of comb filter with 512 coefficients using Spartan-6 FPGA for dichotic presentation. The design of comb filter …
Published in Current Trends in Signal Processing · Vol. 7, Issue 3, 2017 · pp. 15–29 Read article