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915 articles for “bands”
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Design a Rectangular Spiral Microstrip Multi-band Antenna
Abstract: This paper presents a rectangular spiral microstrip antenna operate in multi-band between the frequency ranges of 0.5–5.0 GHz. The proposed rectangular spiral microstrip antenna will be light weight, flexible, slim and compact unit compare with current antenna used in these bands. The paper also presents the detail steps of designing the rectangular spiral microstrip antenna and at different iteration level. This paper is also present how to increase no of …
Published in Journal of Electronic Design Technology · Vol. 3, Issue 1-3, 2012 · pp. 15–23 Read article
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A Dipole Circular Patch Antenna for Operation in the X-Band
Abstract: This microwave engineering research paper proposes, designs, calculates, and simulates a novel dipole circular patch antenna for theoretical wideband operations in the X-band (the 8 GHz to 12 GHz frequency range). This proposed microstrip patch antenna was realized using FR-4 as a dielectric (a thickness of 1.5 mm) with copper being used in both the ground plate and the two transmitting circular elements (the so-called patches with a thickness of …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 2, 2021 · pp. 1–8 Read article
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Design Simulation and Assessment of Image De-noising through Improved Median Filters Based Sub band Decomposition
Abstract: The quality of an image sequence can degrade due to a number of causes, such as noise in the recording, transmission, or scanning. Additionally to enhancing the visual appeal, filtering offers the advantage of facilitating subsequent image processing tasks like coding, interpretation, or analysis. While attempting to restore a perfect image from a faulty copy, noise reduction is a top concern. Because of this, there isn't a single strategy that …
Published in Journal of Microelectronics and Solid State Devices · Vol. 9, Issue 2, 2022 · pp. 9–21 Read article
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A Slotted Fabric Antenna for Broad Band Application
Abstract: This article is presented a compact slotted textile patch antenna for broadband applications. The presented antenna is designed on textile substrate with dielectric constant of 1.7 and the anticipated antenna is compact size. It has been simulated using CST too and measurement is done with network analyzer. It covers a bandwidth of 6.45 GHz extending from 2.85 GHz to 9.30 GHz. It has maximum directivity of 2.932 dBi. The measured …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 4, Issue 2, 2017 · pp. 10–14 Read article
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Designing of Ultra Wide Band Microstrip Antenna using Triple Slotted Patch and DGS
Abstract: AbstractIn this paper, an antenna is designing for Ultra Wide band that is 32.86 GHz is achieved which is very large bandwidth covering maximum application of wireless network. Initially a normal rectangular microstrip patch antenna with microstrip transmission line feed is designed. By using parallel slots in MSL feeding technique very wide bandwidth is achieved than simple design without parallel slots. Maximum impedance matching and good VSWR is achieved in …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 5, Issue 3, 2018 · pp. 12–19 Read article
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CMOS Gm-C IF Filter using SCA for Dual Band Receiver
Abstract: This paper deals with design of folded cascode OTA-C filter, which works for frequencies for RF application, 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 400 MHz. Design of CMOS Gm-C 2nd order Biquad filter implementation …
Published in Journal of VLSI Design Tools and Technology · Vol. 5, Issue 3, 2015 · pp. 18–36 Read article
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Adaptive Hysteresis Band Current Controller for the Shunt Active Power Filter Using the d-q0 Reference Frame Theory
Abstract: Recent wide spread applications of power electronic equipment has caused an increase of the harmonic disturbances in the power systems. The nonlinear loads draw harmonic and reactive power components of current from AC mains. Here an adaptive hysteresis band current controlled shunt active power filter is presented to eliminate harmonics and to compensate the reactive power of three-phase rectifier. This current controller changes the hysteresis bandwidth according to modulation frequency, …
Published in Journal of VLSI Design Tools and Technology · Vol. 10, Issue 2, 2020 · pp. 1–7 Read article
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Electrical Tunability of Transmission Spectrum in 1D Ternary Photonic Band Gap Structures
Abstract: AbstractElectrical tunability of transmission spectrum in 1D Ternary Photonic Band Gap (PBG) structures is studied in this paper. The electro-optic effect can be used to change the refractive index of the constituent material layers of the structure to tune the transmission spectrum. Use of electrical tuning in PBG structure offers the advantages of fast tuning speed, ease of computer controllability etc. The electro-optic effect based tuning will be faster than …
Published in Trends in Opto-electro & Optical Communication · Vol. 7, Issue 2, 2017 · pp. 51–56 Read article
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Comparative Analysis of Forward and Backward Auxiliary Selective ASE Pumping for L-Band EDFA
Abstract: ABSTRACT An exhaustive quantitative and comparative study of eight DWDM EDFA amplifier configurations has been conducted using Selective Wavelength Auxiliary Pumping (SWAP) by Forward Amplified Spontaneous Emission (FASE) and Backward ASE (BASE) pumping schemes for L-band signal gain enhancement and noise figure (NF) improvement. 31 dB gain and 5.19 dB NF at 1570 nm can be achieved using suggested optimum pumping configuration in L-band EDFA. The proposed design model can …
Published in Trends in Opto-electro & Optical Communication · Vol. 2, Issue 3, 2012 · pp. 17–30 Read article
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Analysis of N-Slot Loaded Patch Antenna for Tripple Band Operation
Abstract: ABSTRACT In this paper, the analysis of N-slot loaded microstrip antenna having single and double dielectric layer with coaxial feeding is presented using circuit model analysis. The antenna gives triple resonance and the separation between these resonances depends on the dimension of the slot. This antenna gives wide bandwidth for all three resonant frequencies for single dielectric and gives four bandwidths for double dielectric layer. It is observed that the …
Published in Journal of Communication Engineering & Systems · Vol. 2, Issue 3, 2012 · pp. 11–19 Read article
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A Planar Monopole Antenna for L-Band Applications
Abstract: AbstractThis paper presents a square monopole antenna for L-band application, it is designed to be used in a 879 MHz–2113 MHz frequency bands. It is printed on dielectric substrate of FR4 glass epoxy with relative permittivity (ɛr) of 4.3, thickness of 1.6 mm, a square monopole antenna (aluminium sheet) is mounted on half ground plane via a single feeding strip. Prototypes of these configurations were manufactured and measured in frequency …
Published in Journal of Communication Engineering & Systems · Vol. 3, Issue 1, 2013 · pp. 1–3 Read article
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A quad band PIFA for 4G / 5G wireless communication applications
Abstract: AbstractA compact PIFA for wireless RF (Radio Frequency) devices is presented. The proposed antenna covers GPS L1, GSM 1800, GSM 1900, UMTS 2100, LTE 1700/2100 MHz, LTE 2300, Bluetooth/Wi-Fi/IEEE 802.11 b/g/n, RFID, IEEE 802.16e mobile WiMAX, UNII and C-band frequency bands useful for both 4G and 5G wireless communication applications. The simulation results for return loss, VSWR, two-dimensional radiation patterns and current distribution are demonstrated. The parametric analysis of feed …
Published in Journal of Communication Engineering & Systems · Vol. 9, Issue 2, 2019 · pp. 7–15 Read article
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High Efficient Broad Band Microstrip Patch Antenna
Abstract: In this article, an innovative design is proposed to develop a horizontally polarized microstrip patch antennas for WLAN applications. In this paper plus shape microstrip antenna is proposed with patch length 29.4 mm, width 38 mm, dielectric constant 4.4 and substrate thickness of 1.6 mm. Simulated results of proposed antenna such as; bandwidth, return loss, Voltage Standing Wave Ratio (VSWR) and smith chart is presented. The proposed antenna is simulated …
Published in Journal of Advancements in Robotics · Vol. 3, Issue 1, 2016 · pp. 13–17 Read article
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Wide Band Open Spanner Patch Antenna for Wireless Local Area Network Application
Abstract: This paper presents the enhancement of bandwidth of a microstrip antenna using slotted design fed by Microstrip line feed. The main aim of proposed work is to obtain large bandwidth with reduced size. The proposed microstrip antenna has a wide bandwidth of 48.99% covering the range from 1.806-2.978 GHz which is best suitable for WLAN application. The proposed patch antenna is designed and simulated on the Zeeland IE3D software. The …
Published in Journal of Microwave Engineering and Technologies · Vol. 1, Issue 3, 2014 · pp. 21–25 Read article
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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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Enhancement of the Bandwidth of Micro-Strip Patch Antenna Arrays using Multi Slot Techniques for WLAN Applications
Abstract: Micro-strip antenna (MPA) arrays are explored to achieve higher gain and improved bandwidth (BW), which is preferred for WLAN applications. In this paper, multi slot 2x2 single port micro strip patch antenna array are designed and simulated. The target frequency range is at S-band with frequencies that range from 2 to 4 GHz. This paper investigates 2x2 single port antenna arrays within multi slot techniques for improved BW. It proposes …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 1, Issue 3, 2014 · pp. 12–19 Read article
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The Effect of Ni2+ Ions on Energy Band gap of TiO2 Nanoparticles for Solar Cell Applications
Abstract: Pure TiO2 and Nickel doped TiO2 nanoparticles were prepared by chemical synthesis route with different doping percent of Nickel at 4500 C annealing temperature. UV-Visible and XRD characterizations were performed to know the doping effect of Nickel in pure TiO2. XRD results show increased particle size with doping of Ni2+, the particle size of samples are in the range of 27.43 nm to 45.85 nm. UV-Visible results revealed decreased band …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 8, Issue 2, 2018 · pp. 69–74 Read article
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Quantum-Fuzzy Tensor Operators and Uncertainty-Band Bifurcation for Symmetry-Preserving State Discrimination
Abstract: A tensor-operator framework is developed for fuzzy conjunction, fuzzy disjunction, and symmetry-preserving state discrimination in multi-qubit quantum systems. In this formulation, fuzzy membership and non-membership degrees are represented through expectations of effect operators acting on density matrices, providing a natural bridge between fuzzy logic and quantum measurement theory. Conjunction and disjunction operations are extended to the quantum domain via tensorised channels, constructed using projective measurements and unitary transformations, enabling logical …
Published in Emerging Trends in Symmetry · Vol. 2, Issue 1, 2026 · pp. 08–15 Read article
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X- Band Microstrip Antenna for Radar and Amateur Radio Service
Abstract: Microstrip antennas and arrays are used as an alternative for the bulky and heavy weight reflector/slotted waveguide array antennas. For radars which demand a low profile, light weight antenna subsystem, the microstrip antennas are an ideal choice. The proposed antenna is designed in the X-band for the radar and missile application. It is a dual band antenna with resonant frequency of 8.5 GHz and 10.132 GHz having return loss 38.59 …
Published in Journal of Electronic Design Technology · Vol. 3, Issue 1-3, 2012 · pp. 73–83 Read article
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LNA-BPF for Receiver Applications in ISM Band
Abstract: A new approach of design and performance analysis of low-noise amplifier with band-pass filter at 2.45 GHz is proposed in this paper. High gain of 15.99 dB and noise of 1.024 dB is achieved at a frequency of 2.45 GHz. A low noise amplifier is used in receiver applications to amplify possibly very weak signals. LNA and BPF are placed in the front end of the receiver circuit so that …
Published in Journal of Microwave Engineering and Technologies · Vol. 3, Issue 2, 2016 · pp. 7–12 Read article