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655 articles for “s-band”
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Wideband Ring Dielectric Resonator Antenna Using C Shaped Parasitic Elements
Abstract: Abstract: This paper presents a Ring Dielectric Resonator Antenna for wideband applications. Ring DRA is excited by annular shaped microstrip feedline. Bandwidth enhancement is achieved by adding the C-shaped parasitic elements on both sides of ring dielectric resonator antenna and removing the central part of a cylindrical DRA to form ring DRA. The operating frequency of proposed DRA lies between 2.054–6.5 GHz. Gain and Radiation efficiency of this proposed antenna …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 6, Issue 1, 2019 · pp. 32–37 Read article
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E-Shaped Microstrip Patch Antenna for High Speed Wireless Local Area Network (WLAN) Applications
Abstract: A microstrip antenna consisting of E-shape radiating patch having low profile, probe-fed is designed and proposed for wireless local area networks (WLAN) applications. All countries use different WLAN, as the antennas available are not able to cover all the standards. This study aims to design a smallest antenna with better polarization covering all high speed WLAN standards ranging from 4.47 to 5.82 GHz. The patch antenna designed on low cost …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 4, Issue 1, 2017 · pp. 1–5 Read article
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Video Telephony using Cable TV Distribution Network
Abstract: This paper focuses to implement video telephony using cable TV distribution network. We had used coaxial cable which is main part of cable TV network and it provides efficient bandwidth for video telephony. The major design issue to implement full-duplex communication channel for audio-video information and establish switching control section for routing the signal to the destination. We had chosen coaxial cable for communication link because it is already established …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 3, Issue 1, 2016 · pp. 1–7 Read article
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Performance Analysis of Carrier Frequency Offset (CFO) and Phase Noise in 4G Communication System
Abstract: For telecommunication services the dramatic shift in the market has been made in beginning of 21st century. In these days' communication network the key challenges is to integrate numerous serves, convey the additional data as expeditiously as doable through limited bandwidth and providing high information data rates. For 4G communication systems 3GPP introduced two features Higher Order Modulation and Multiple Input Multiple Output (MIMO) in OFDM system but one limiting …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 3, Issue 1, 2016 · pp. 33–46 Read article
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Performance Evaluation of PAPR Reduction in OFDM System
Abstract: OFDM is a bandwidth efficient multicarrier modulation which has gained a tremendous focus in recent years because of its high spectral efficiency; multipath delay spread tolerance, effectiveness against impulse noise and frequency diversity. However, some challenging issues still remain unsolved in the design of the OFDM systems. One of the major problems is high peak-to-average power ratio (PAPR) of transmitted OFDM signals. A large PAPR brings disadvantages like increased complexity …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 3, Issue 2, 2016 · pp. 21–36 Read article
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Network Selection with Load Balancing in Wireless Heterogeneous Environment
Abstract: Coexistence of various wireless radio access networks (RAN) and ability of mobile terminals to switch between them efficiently makes an optimal selection of serving mobile networks for groups of mobile-clients a major challenge with efficient load balancing. To overcome this problem, more flexible heterogeneous wireless networks (HWN) are required with the advantage of mobility, consistency, ubiquitous provision and improved spectral efficiency. In this paper, network selection with load balancing criteria …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 3, Issue 3, 2016 · pp. 7–15 Read article
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Broadband, M- shaped Rectangular Cutting Slotted Antenna at 2.5 GHz for Mobile and WLAN Application
Abstract: In this paper, the authors have discussed M-shaped cutting slotted antenna for mobile and WLAN applications. After designing the antenna on 2.5 GHz frequency, the authors used the dielectric substrate 4.4, loss tangent 0.0012 and having the substrate height 1.6 mm and the antenna is showing the bandwidth 52.4%; the maximum return loss is −14.5 db.
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 2, Issue 1, 2015 · pp. 5–8 Read article
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Performance Enhancement of Cognitive Radio Spectrum Sharing (CRSS) with MIMO System
Abstract: A key challenge in operating cognitive radios (CRs) in a self-organizing (ad hoc) network is to adaptively and efficiently allocate transmission powers and spectrum among CRs according to the surrounding environment. Cognitive radio networks will provide high bandwidth to mobile users via heterogeneous wireless architectures and dynamic spectrum access techniques. CR networks inflict challenges due to the fluctuating nature of the available spectrum, as well as the diverse QoS requirements …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 2, Issue 3, 2015 · pp. 13–18 Read article
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A Review on Wearable Textile Antenna
Abstract: In today’s world, importance of wearable textile antennas has gained importance for healthcare and pervasive applications. Utilization of wearable textile materials for the development of microstrip antenna segment has been rapid due to the recent miniaturization of wireless devices. The use of wearable textile antennas is increasing rapidly in wireless applications. A wearable antenna is meant to be a part of the clothing used for communication purposes, which includes tracking …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 2, Issue 3, 2015 · pp. 37–41 Read article
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Design and Validation of Slot Coupled Rectangular Half Mode SIW Antenna
Abstract: This paper presents the design and performance analysis of a Rectangular Half Mode Substrate Integrated Waveguide (HMSIW) antenna configuration to attain higher gain and multiband characteristics with the compact size. It is possible to produce multiband properties by placing variously shaped slots on the top of the patch and ground surface. To attain the necessary gain and multiband resonance characteristics, the type of the slot, dimension optimization, and position optimization …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 10, Issue 2, 2023 · pp. 14–21 Read article
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Navigating the Spectrum: A Review of Challenges and Opportunities in Wireless Network Densification for 6G Technology
Abstract: Each generation of wireless communication technology brings new and exciting features. However, the latest technology is not able to fully support the continuous increasing demand for wireless communication in 2030. To address the issues posed by the growing number of devices and the volume of voice and data communications traffic, a significant amount of research is needed. End-device (ED) and base station (BS) densification in Wireless (WND) will be impacted …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 10, Issue 3, 2023 · pp. 25–30 Read article
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Comparative Study of (Operational Transconductance Amplifier) OTA to Design Low Pass Filter
Abstract: Basic building block to design an analog circuit is amplifier and it is used for such applications like analog to digital and digital to analog converter, sensor network and many more. Amplifier with lofty gain and high bandwidth will increase the efficiency of design. Present time is talking about development of VLSI technology and everything is related to size of transistor and decreasing power supply in a circuit. Operational transconductance …
Published in Journal of VLSI Design Tools and Technology · Vol. 5, Issue 2, 2015 · pp. 11–15 Read article
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Comparative Analysis of Class-AB Voltage Follower using DTMOS Transistor
Abstract: This paper describes a topology of voltage follower Class-AB Voltage Follower like Translinear voltage follower using MOS and DTMOS Transistor. The circuits are simulated in 90 nm technology. The results are used to compare the performance of the above voltage followers. All analysis was supported by the simulation results. The analysis are made in terms of gain, bandwidth and transient response using ELDO spice, IC station and Design architect of …
Published in Journal of VLSI Design Tools and Technology · Vol. 5, Issue 2, 2015 · pp. 64–70 Read article
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Design and Implementation of Low Noise Amplifier using 90 nm MOS Technology for Bluetooth
Abstract: In the era of Miniaturization it is necessary that analog field develops at par with the digital world. To design RF circuit on the single chip it is necessary that noise performance of active semiconductor devices are studied and configure the devices in such a way that noise gets minimized. In this paper various kinds of noise in the devices are explained at a brief. Low Noise Amplifier for Bluetooth …
Published in Journal of VLSI Design Tools and Technology · Vol. 4, Issue 3, 2014 · pp. 13–19 Read article
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Automatic Switch cum Fuse IC for Low Voltage, Low Power, High Performance Current Conveyors
Abstract: The paper focuses on the analysis of switch cum fuse IC in signal processing. In signal processing it is proposedto prevent the damage of main IC from the external electrical fluctuations which are common in -these days. Theproposed FUSE IC is also able to act as fuse for many times for main IC so that it can prevent the damage. It’slike the work of MCB but a step ahead that …
Published in Journal of VLSI Design Tools and Technology · Vol. 1, Issue 1-2-3, 2011 · pp. 21–25 Read article
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An Innovative Approach of the Analysis of the Low Noise of a CMOS-Based Amplifier for Analog Signal-based Applications
Abstract: A low-noise amplifier (LNA), which is based on the cascode feedback methodology, has been commonly used for various wireless protocol-based network applications nowadays. It is so because this topology ensures that the low-noise amplifier (LNA) can achieve quite a high performance and thus, provides a high qualitative output. This amplifier is operated with a low voltage supply in the range of few volts that requires that the impedances of the …
Published in Journal of VLSI Design Tools and Technology · Vol. 2, Issue 1-2-3, 2012 · pp. 7–15 Read article
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Low Power RF QPSK MODEM Design
Abstract: System-level simulation including design of CMOS circuits for radio frequency QPSK MODEM targeting applications in 2.45 GHz industrial, scientific and medical (ISM) band has been presented in this paper. Based on the QPSK architecture, the MODEM consists of an analog mixer using a voltage multiplier, a 90 °phase shifter, delay circuits, a voltage adder and a filter to detect the information. A code reuse subsystem block consisting of Chebyshev filter …
Published in Journal of VLSI Design Tools and Technology · Vol. 2, Issue 1-2-3, 2012 · pp. 75–86 Read article
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Switched Capacitor-based RC Filter
Abstract: Today we know that the demand of low voltage for low power integrated circuits (ICs) are used for growing the portable equipment in all the markets including telecommunication, computers and customer electronics with smaller size. The low voltage need for ICs is also motivated by the new dip submicron complementary metal oxide semiconductor (CMOS) technology scaling that required all transistors of smaller size. In current years, a lot of researches …
Published in Journal of VLSI Design Tools and Technology · Vol. 6, Issue 1, 2016 · pp. 32–40 Read article
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Survey of System-on-Chip Modular Test Approach
Abstract: The advancement in semiconductor technology over the past few decades has enabled the industry to develop new design and reuse methodologies referred as System-on-chip (SoC) design. These typically integrate heterogeneous mix of various complex analog and digital cores, with all their necessary electronic circuitry. The recent advancements have led to the use of the 3D structures (3D-SOCs) that brought along the benefits of higher performance, minimum average interconnect length, reduced …
Published in Journal of VLSI Design Tools and Technology · Vol. 6, Issue 3, 2016 · pp. 56–70 Read article
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Investigations on the impact of modulation formats and weather conditions in FSO link employing polarization division multiplexing and coherent detection-orthogonal frequency division multiplexing
Abstract: Free space optics (FSO) is a communication system where free space acts as medium between transceivers and they should be in line-of-sight for successful transmission of optical signal. Medium can be air, outer space, or vacuum. This system can be used for communication purpose in hours and in lesser economy. There are many advantages of FSO like high bandwidth and no spectrum license. The transmission in FSO is dependent on …
Published in Journal of VLSI Design Tools and Technology · Vol. 10, Issue 2, 2020 · pp. 17–25 Read article