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406 articles for “C-band application”
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Design and Evaluation of High Bandwidth Micro-strip Patch Antenna Arrays for WLAN Applications
Abstract: Micro-strip antennas are preferred to WLAN applications because of their low profile, light weight and low power handling capacity. In this paper, micro-strip patch antenna (MSPA) arrays are designed and analyzed. The target frequency range is at S-band with frequencies that range from 2 to 4 GHz. Antenna arrays are explored to achieve higher gain and improved bandwidth (BW). The key parameters to obtain this goal are antenna dimensions such …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 1, Issue 3, 2014 · pp. 1–11 Read article
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Effect of Annealling on Optical Band Gap of Fe2O3 Thin Films on Amorphos Transparent Glass Substrate by Spray Pyrolysis Method
Abstract: The Fe 2 O 3 thin film has widely used photo-electrochemical cells. In this paper, the optical properties like band gap of thin films is depend on annealed temperature at 100 o C and 200 o C was discussed. The optical property of Fe 2 O 3 are studied by UV- Vis spectroscopy .The optical band gap decreased after increasing annealing temperature. The refractive index of Fe 2 O 3 …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 10, Issue 2, 2023 · pp. 25–29 Read article
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Novel Design of Broad Band Microstrip Antenna for WiMAX/WLAN/UMTS Applications
Abstract: The main aim of this paper is to obtain a large bandwidth with a low-cost and compact-sized antenna. Here a rectangular patch fed with linefeed technique is designed. Wide bandwidth is obtained covering the range from 0.99–2.68 GHz. The designed line-fed patch antenna can operate in the WiMAX (2.2–3.4 GHz), WLAN (2.40–2.48 GHz) and UMTS II (2.50–2.69 GHz) frequency bands giving a maximum bandwidth of 90.18%. The simulation results were …
Published in Journal of Microwave Engineering and Technologies · Vol. 1, Issue 1, 2014 · pp. 1–5 Read article
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Advanced 4-Element UWB-MIMO Antenna Design: Achieving High Isolation and Multi-Band Rejection for Advanced Wireless Applications
Abstract: In this study, we present the design, fabrication, and analysis of a step-by-step Ultra-Wideband (UWB) Multi-Input Multi-Output (MIMO) antenna operating from 3 to 14 GHz. The antenna consists of four elements, each characterized by high isolation and equipped with four band-rejection features. These elements are implemented on a Rogers substrate with εr=3. Each antenna element is a modified rectangular patch, incorporating partial ground etching to achieve wider bandwidth. Two sets …
Published in Journal of Communication Engineering & Systems · Vol. 15, Issue 1, 2025 · pp. 40–62 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
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An Investigation on Influence of Gamma-Irradiation and Doping on Chemical Structures and Optical Properties of Conducting Polypyrrole
Abstract: In this study, the authors report on effect of gamma-irradiation and doping (bromine, iodine and sulfate ion) on chemical structure and optical, electronic properties of polypyrrole. Optical absorption spectrum of PPY shown absorption bands centered around 36.2.5 nm (peak 1), 450 nm (peak 2) and 525 nm (peak 3) positions. Gamma irradiation resulted in broadening of peak A together with a band shift of 45–525 nm and disappearance peaks 2 …
Published in Journal of Polymer & Composites · Vol. 14, Issue 5, 2026 · pp. 48–57 Read article
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Multi Resonant Microstrip Antenna with Partial Ground for Radar Application
Abstract: In this paper, a novel structure of microstrip antenna using partial ground technique and suitable for Radar application has presented. The substrate of the proposed antenna was made of glass epoxy substrate, while radiating element and ground plane are made out of copper. The proposed novel design has high gain, directivity, good return loss and multi bands. Improvement in the design is done by increasing the electrical length and area …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 2, Issue 2, 2015 · pp. 1–6 Read article
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Recent Development in Ga2O3 MOSFETs for High Power RF Applications
Abstract: Abstract: This paper attempts to investigate the property of recently reported gallium oxide as a high power RF device by studying its related high power RF characteristics, and suggest a path to develop metal-oxide-semiconductor field effect transistor (MOSFET). Keywords: MOSFETs, Wide Band Gap Semiconductors, Gallium Oxide and RF ICsCite this ArticleNarendra Yadava, R.K Chauhan. Recent Development in Ga2O3 MOSFETs for High Power RF Applications. Journal of Semiconductor Devices and Circuits …
Published in Journal of Semiconductor Devices and Circuits · Vol. 6, Issue 1, 2019 · pp. 21–25 Read article
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Recent Innovations in Semiconductor Materials for Smart Electronic Devices
Abstract: Recent advancements in semiconductor materials have significantly transformed the design, performance, and functionality of smart electronic devices such as smartphones, wearable systems, IoT devices, autonomous systems, and biomedical electronics. With the continuous demand for higher processing speed, lower power consumption, improved thermal stability, and extreme miniaturization, traditional silicon-based semiconductor technology is facing major limitations. As device dimensions shrink to the nanometer scale, challenges such as leakage current, heat dissipation, and …
Published in Journal of Semiconductor Devices and Circuits · Vol. 13, Issue 2, 2026 · pp. 1–11 Read article
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Improved Performance Characteristics of a Designed 1050 nm Bottom Emitting MQW VCSEL using Al0.25Ga0.22In0.53As/InP Materials
Abstract: AbstractIn this work, the design and performance characteristics of a bottom emitting Al0.25Ga0.22In0.53As/InP Multi-Quantum Well (MQW) Vertical-Cavity Surface-Emitting Lasers (VCSEL) have been presented for operation at a wavelength of 1050 nm. The transparency carrier density and bandgap energy of the QW and barrier materials are computed. An improved performance of the designed VCSEL has been obtained by selecting a material with high gain and lower transparency carrier density in the …
Published in Trends in Opto-electro & Optical Communication · Vol. 3, Issue 3, 2013 · pp. 22–30 Read article
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Modification of Microstrip Antenna by “Hexagonal Shaped” Metamaterial for Wireless Applications
Abstract: AbstractIn this proposed paper, a split ring “Hexagonal Shaped” metamaterial structure is used to modify the factors of antenna. The compact patch antennas (CPA) are directive and their size is small in surroundings. These antennas are sources to achieve the recent requirements. These antennas are desired to be possessing less return loss, better directivity, higher bandwidth and compact size at the operating frequency when used in any communicating operation. This …
Published in Journal of Microwave Engineering and Technologies · Vol. 5, Issue 3, 2018 · pp. 25–29 Read article
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Synthesis and Spectral Characterization of Complexes Tin(II) With 4-Nitrophenol
Abstract: Tin(II)4-nitrophenoxide complexes with the formulas SnCl(OC₆H₄NO₂-4) and Sn(OC₆H₄NO₂-4)₂ were prepared through the reaction of stannous chloride (SnCl₂) with 4-nitrophenol (HOC₆H₄NO₂-4) in 1:1 and 1:2 molar ratios, respectively. The reaction was performed in tetrahydrofuran (THF) with diethylamine serving as the base. The resulting compounds were characterized through elemental analysis, determination of molecular weight, molar conductance measurements, and spectroscopic methods including IR and ¹H NMR spectroscopy. Current investigations are directed toward assessing …
Published in International Journal of Advance in Molecular Engineering · Vol. 4, Issue 1, 2026 · pp. 22–26 Read article
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Study of Nano Germanium and Composited Forms
Abstract: This article has reviewed refinement synergism to same as earlier bulk semi-conduction. Colloidal 5 nm suspension from photolysis and pyrolysis for aerogel of II-VI quantum dots has subsidized extinction contour of semiconductor nano-crystal. Thereby transitional has accused between 0.6 to 5 eV to access from size-dependent optical and electrical effect instead of precipitation technique. Structure-oriented electronic and optical property has relevance to nano-semiconductor preparation method synergistic to earlier bulk. Nano-crystals …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 8, Issue 2, 2021 · pp. 8–15 Read article
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Characterizing Electromagnetic Behavior of X-Band Rectangular Waveguide with Convex and Concave Shaped Ridges Using Hp-Finite Element Method
Abstract: In this research study, we explore the behavior of electromagnetic waves as they propagate through ridge waveguides with convex and concave shapes, having both single and double walls. To analyze the waveguide's characteristics, we employ the highly accurate hp-finite element method (hp-FEM). The focus is on investigating the impact of these ridge deformations on cutoff frequencies and bandpass for TE10 and TE20 modes. To benchmark our findings, we compare the …
Published in Journal of Microwave Engineering and Technologies · Vol. 10, Issue 1, 2023 · pp. 27–34 Read article
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Rectangular Slot Loaded Circular Patch Antenna for WLAN Application
Abstract: In this paper design and analysis of Circular Microstrip antenna with two rectangular slots having inset-feed has been presented. A computer simulation using IE3D software was performed and the bandwidth of the antenna has been measured. The proposed antenna has been fabricated & tested successfully with network analyzer. By using slotting technique inside the circular patch better impedance bandwidth is achieved. The proposed antenna is suitable for Wireless Local Area …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 2, Issue 2, 2015 · pp. 7–10 Read article
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A Comprehensive Review of Deep Compressive Sensing for Efficient IoT Data Management
Abstract: The Internet of Things has revolutionized data-driven ecosystems and offers advanced services, such as live monitoring and automation in various domains: smart cities, healthcare, and industrial automation. However, with the exponential growth of IoT devices, comes a large amount of data generation, which poses considerable problems like network congestion, latency, and energy inefficiency. Compressive sensing (CS), one of the newest signal processing methodologies, has emerged as an enabler to meet …
Published in Trends in Electrical Engineering · Vol. 14, Issue 3, 2024 Read article
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Improved Performance Characteristics of A Designed 450 nm True Blue Laser Using InGaN/AlGaN Materials
Abstract: AbstractIn this work, the characteristics of a designed 450 nm true blue semiconductor laser are presented. Performance and optimizations of the designed laser are presented using InGaN/AlGaN active layer materials. A maximum optical output power of the laser is obtained as 147.48 mW for 93 mA injection current and 1 × 10−16 cm2 differential gain, where, the threshold current is 9.3 mA. The modal gain is calculated as 69.774 cm−1 …
Published in Trends in Opto-electro & Optical Communication · Vol. 3, Issue 1, 2013 · pp. 24–30 Read article
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Development of Metal-Skin Sandwich Panel of Cement Reinforced Polypropylene Composite as Hub Material
Abstract: Cement reinforced polypropylene based composite material has shown significant potential for industrial applications recently. This work is in line with the material design and fabrication of metal-skinned sandwich panels; an application of the cement filled polypropylene composite material. Different compositions of cement filled composite materials are selected and few metal-skinned sandwich panels are fabricated where aluminum (Al) and galvanized iron (GI) sheets are used as skin materials. Several experiments are …
Published in Trends in Machine design · Vol. 3, Issue 1, 2016 · pp. 30–50 Read article
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Abscess on Right Thoracic Wall Due to Traumatic Reticulitis in a Buffalo
Abstract: 3 year old heifer was presented to the clinic with repeated fever, anorexia and emaciation. Examination of buffalo revealed fever, tachycardia, tachypnea, ruminal atony with bloat and hot, pain full abscess on right thoracic wall. Haematology revealed erythrocytopenia, leucocytosis with more number of band cells. Buffalo was treated with inj. strepto penicillin along with supportive therapy and external application of iodex ointment over the abscess. After completion of five days …
Published in Research and Reviews : Journal of Veterinary Science and Technology · Vol. 4, Issue 3, 2015 · pp. 24–26 Read article
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Performance Evaluation of Adverse Atmospheric Effects on Free Space Optical Communication
Abstract: There is an increasing need for communication systems that can accommodate high bandwidth and quick data transfer rates in today's fast-paced technological environment. Free Space Optical (FSO) communication has become a very attractive technology to address these changing needs. FSO systems, which use license-free infrared beams, have a number of benefits, including strong bandwidth, immunity to interference, improved security, and small, light designs. FSO is used in many different applications, …
Published in International Journal of Solid State Innovations & Research · Vol. 2, Issue 1, 2024 · pp. 21–29 Read article