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655 articles for “s-band”
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Implementation of 16-Bit Qam Using Texas Instruments
Abstract: In this paper, an implementation of 16-bit QAM is performed where there is a high use of Digital Video Broadcasting Cable (DVB-C), as there is increase in the usage 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 communications. QAM multilevel modulation can offer an attractive solution to current bandwidth restriction in …
Published in Journal of Microelectronics and Solid State Devices · Vol. 2, Issue 2, 2015 · pp. 14–20 Read article
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Three-stage Decimation Filter Design with CIC and FIR Filters: A Review
Abstract: In this paper the design of decimation filter with three stages are considered and presented using the FDA tool of MATLAB. The decimation filter reduces the sampling rate of the signal while preserving the required data. The single stage filter is very difficult to implement because it requires more coefficients which results in bad frequency response so three stages of filters are considered, and further decimation is done. In filter …
Published in Journal of Nuclear Engineering & Technology · Vol. 13, Issue 1, 2023 · pp. 30–36 Read article
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A Simplified Indirect Control Scheme for Shunt-active Power Filters
Abstract: This paper presents a simplified indirect control scheme for shunt-active power filters for compensating harmonic currents and improving power factor. The control is based on the simple method for generation of the reference compensating current. The reference compensating current is obtained by subtracting load current from reference source current. PI controller is used to adjust the amplitude of the reference source current that regulates the DC capacitor voltage. Hysteresis band …
Published in Journal of Power Electronics and Power Systems · Vol. 2, Issue 1, 2012 · pp. 1–7 Read article
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Design and Performance of Semiconductor-Biosensor
Abstract: In this work, a high electron mobility transistor (HEMT) based biosensor is designed to detect the virus-protein. In this work, all the simulation-studies are carried out in the SILVACO-ATLAS physical simulator using the following models: Shockley Read Hall (SRH), band gap narrowing, Auger recombination, and Fermi Dirac statistics. Newton trap numerical solver is used in the device simulation. Conduction band engineering of the biosensor is studied. DC and RF properties …
Published in Journal of Semiconductor Devices and Circuits · Vol. 8, Issue 2, 2021 · pp. 1–13 Read article
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DC and RF Analysis on Specific Quantum-Well Heterostructures
Abstract: Polarization-graded AlGaN back-barrier nano-layer is introduced in high electron mobility transistor (HEMT) structure to have an improved drain current characteristics and better radio-frequency performance, using two-dimensional drift-diffusion simulation by SILVACO-ATLAS physical simulator. In this work, the AlGaN/AlN/GaN/AlGaN/GaN double heterojunction HEMT structure is optimised with graded back barrier layer to study the DC and RF performances. Investigation of this structure with graded back barrier layer is the novelty of this work. …
Published in Journal of Semiconductor Devices and Circuits · Vol. 9, Issue 1, 2022 · pp. 1–13 Read article
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Wearable Antenna using Foam Substrate for Multiband Application
Abstract: The novel and flexible antenna for modern communication system is studied in this paper. The proposed antenna is compact in size, shows high directivity and large bandwidth. Polystyrene foam material is used as a substrate because such antenna is bendable, wearable, inexpensive, require less attention and having good features like low dielectric constant, low loss tangent and better efficiency. The parameters of antenna such as reflection coefficient, gain, bandwidth, radiation …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 4, Issue 2, 2017 · pp. 23–26 Read article
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Articulation Point Technique in MANET
Abstract: The mobile ad hoc network, which is a wireless network of special type and has a collection of wireless hosts with wireless network interfaces, encompasses a temporary network, without any established infrastructure or centralized administration. All wireless nodes will start broadcasting again all the received broadcast messages. It is a common problem called as blind broadcast. Every node may receive the same copy of the messages from all the neighboring …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 3, Issue 3, 2016 · pp. 25–34 Read article
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A Visible Light-based Indoor Navigation and Localization Solution for Visually Criticized Users
Abstract: Visible Light Communication is seen as a promising option for 5G communication because to its characteristics such as operating in a non-licensed frequency spectrum, offering high bandwidth, using minimal power, and being immune to electromagnetic interference. This property allows light waves to transmit data faster and convey more information, making VLC a promising solution for providing universal electronic navigation assistance to visually challenged individuals. VLC utilizes the visible light spectrum …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 10, Issue 2, 2023 · pp. 22–34 Read article
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A High Performance Reference Circuit with Optimized Input Offset Operational Amplifier using Device Mismatch Model
Abstract: In this paper, author describes a band gap reference (BGR) circuit, having reference voltage 1.20V with maximum temperature coefficient of 63 ppm/0C in temperature range of –40 to 120 0C. The circuit operates in range of supply voltage, 3.0V to 3.6V. An operational amplifier (op-amp), whose input offset voltage is reduced upto 892 µV using Pelgrom’s device mismatch model is used in BGR. The power supply rejection ratio of circuit …
Published in Journal of VLSI Design Tools and Technology · Vol. 3, Issue 1, 2013 · pp. 1–7 Read article
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Design of Low Power Folded Cascode Current Mirror CMOS OTA and Implementation of 2nd Order Gm-C IF Filter with Analysis of S-Parameter
Abstract: This paper deals with design and optimization of a cascode current mirror folded cascode operational transconductance amplifier is done in order to optimize MOS transistor sizing. The design of folded cascode OTA, which works for frequencies that lead to a base band circuit design for RF application, is based on transistor sizing methodology and Simulation results are performed using SPICE software and BSIM3V3 model for CMOS 0.18μm process, show that …
Published in Journal of VLSI Design Tools and Technology · Vol. 3, Issue 2, 2013 · pp. 12–23 Read article
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Design and Implementation of 2nd Order Gm-C IF Tuning Filter Operating at 900 MHz and 88–108 MHz Wireless System for Multi Standard Receiver
Abstract: This paper deals with design and optimization of folded cascode OTA-C filter, which works for frequencies that lead to a base band circuit design for RF application, is based on transistor sizing methodology and Simulation results are performed using SPICE software and BSIM3V3 model for CMOS 0.18 μm process, show that the designed folded cascode OTA has a 52 dB DC gain and provides a Unit gain bandwidth of around …
Published in Journal of VLSI Design Tools and Technology · Vol. 4, Issue 1, 2014 · pp. 8–24 Read article
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Simulation Study of Tapered Shape FinFET
Abstract: During recent years, nonplaner tri-gate (TG) field-effect transistors (FETs) such as FinFETs have been extensively studied for the enhancement of electrostatic control and suppression of short-channel effects (SCEs) in the sub50 nm regime. As the device scaled, it is observed that the shape of the rectangular FinFET becomes tapered shape. This paper presents the design and analysis of a tapered-shaped FinFET. By varying the sidewall inclination angle of a rectangular …
Published in Journal of VLSI Design Tools and Technology · Vol. 6, Issue 1, 2016 · pp. 21–31 Read article
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Design of CMOS AM Modem for Wireless Sensors
Abstract: A design of amplitude modulated (AM) modem, compatible to CMOS technology for its monolithic integration with either wireless microsensors or other sources of baseband signals, is presented in this paper operating in different frequency bands. Circuits functional in different operating conditions are considered in the paper to satisfy the requirement from low- to high-speed signals produced either from the wireless sensor or other signal source to be modulated on a …
Published in Journal of VLSI Design Tools and Technology · Vol. 2, Issue 1-2-3, 2012 · pp. 44–51 Read article
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Experimental Analysis of Rectangular and Circular Microstrip Patch Antenna with Superstrates
Abstract: This paper focusing on the experimental analysis of rectangular and circular microstrip patchantennas with and without radome (superstrate). The proposed antennas were designed at2.4GHz, using HFSS simulation software and fabricated on Arlon DiClad 880 substratewhose dielectric constant is 2.2, loss tangent is 0.0009 and thickness of the substrate is1.6mm. Placing different dielectric constant of the superstrates above the patch antennasperformance characteristics have been studied of both antennas on the basis …
Published in Recent Trends in Electronics Communication Systems · Vol. 7, Issue 3, 2020 · pp. 34–45 Read article
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Comparative Study on Red Tacton with Other Technologies
Abstract: AbstractRed tacton is a communication between the object and the human. This technology is easy to use services and it activates the communication. This paper describes about the networking through touching in the human body for the transmission of the data. This networking technology was developed by Robin Gaur Jind, he described that the body of the human with safe and speed. The red tacton is a chip which is …
Published in Trends in Opto-electro & Optical Communication · Vol. 6, Issue 2, 2016 · pp. 30–34 Read article
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On Tuning Mechanisms In Existing Recent Patents on Tunable Photonic Crystals
Abstract: AbstractThis manuscript studies the photonic band gap tuning mechanisms in recent patents on tunable photonic crystals and suggest ideas to enhance the tuning control capability of photonic band gaps in these patents.Keywords: Photonic crystals, external stimulus, tunable spectraCite this Article:Anirudh Banerjee. On Tuning Mechanisms In Existing Recent Patents on Tunable Photonic Crystals. Trends in Opto-electro & Optical Communication. 2015; 5(1): 19–21p.
Published in Trends in Opto-electro & Optical Communication · Vol. 5, Issue 1, 2015 · pp. 19–21 Read article
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Effects of EDFA Parameters on the Performance of A 4-Channel CWDM Optical Communication System
Abstract: AbstractIn this work, the performance of EDFA has been analyzed in Conventional band (C- band) based on its three types of application system i.e. pre-amplifier, post-amplifier and inline amplifier system. To check the performance for these three application system, a 4-channel Coarse Wavelength Division Multiplexing (CWDM) system has been designed using EDFA with optical CWDM fiber. By varying the length and numerical aperture (NA) of EDFA, different factors such as …
Published in Trends in Opto-electro & Optical Communication · Vol. 4, Issue 2, 2014 · pp. 33–38 Read article
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Design and Performance Analysis of a 635 nm Ga0.5In0.5P/(Al0.7Ga0.3)0.5In0.5P Multiple Quantum Well Separate Confinement Heterostructure Red Laser Considering Thermal Limitations
Abstract: AbstractIn this work, the performance characteristics of a GaInP - based 635 nm multiple quantum well (MQW) separate confinement heterostructure (SCH) Red laser has been obtained through computations. The material gain of Ga0.5In0.5P/(Al0.5Ga0.5)0.5In0.5P MQW edge emitting laser (EEL) has been theoretically obtained. The peak material gain obtained from the analysis has been used for analyzing the performance of the designed double-heterostructure laser. A maximum output power of 71.18 mW and …
Published in Trends in Opto-electro & Optical Communication · Vol. 3, Issue 1, 2013 · pp. 11–17 Read article
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Effects of Variation of Injection Current on Characteristics of a 1550 nm Semiconductor Laser
Abstract: AbstractThis work represents the prototype of both the analytical and the simulation based study on high speed communication system particularly high speed data transmission through optical fiber using 1550 nm InGaAsP/InP laser. In recent years, Vertical Cavity Surface Emitting Lasers (VCSELs) are prerequisites for future ultrahigh data-rate systems. This paper represents an overview on high speed performance of the 1550 nm VCSEL. Using MATLAB simulation tool the characteristics of the …
Published in Trends in Opto-electro & Optical Communication · Vol. 3, Issue 2, 2013 · pp. 1–6 Read article
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High Modulation Performance of a Designed InGaN Based 405 nm Multi-Quantum Well Violet Laser
Abstract: AbstractIn this work, the modulation performance characteristics of a designed 405 nm InGaN based multi-quantum well (MQW) Violet Laser are optimized and presented by varying injection current and differential gain. A maximum output power of 222.53 mW and a maximum resonance frequency of 18.79 GHz of the laser are obtained for 117 mA injection current, where, the differential gain is 4x10-16cm2. The differential quantum efficiency of the laser is obtained …
Published in Trends in Opto-electro & Optical Communication · Vol. 3, Issue 2, 2013 · pp. 7–13 Read article