radio frequency 2021




Fourier domain excision of periodic radio frequency interference
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The discovery and study of pulsars and fast radio bursts (FRBs) in time-domain radio data is often hampered by radio frequency interference (RFI). Some of this terrestrial RFI is impulsive and bright, and relatively easy to identify and remove. Other anthropogenic

A mobility‐aware cluster‐based MAC protocol for radio ‐ frequency energy harvesting cognitive wireless sensor networks
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Cognitive wireless sensor networks (CWSN) are severely energy constrained and radio frequency (RF) wireless energy harvesting (RFWEH) has been shown to improve the network lifetime. In many CWSN applications, node mobility imposes challenges owing to

Morphological and cytophysiological changes in selected lines of normal and cancer human cells under the influence of a radio frequency electromagnetic field
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Introduction. Currently, mobile phones and Wi-Fi are the most commonly used forms of telecommunication. The popularity of mobile telecommunications has made it necessary to investigate the problem more comprehensively and cautiously assess the possible risks

Microwave and radio frequency fractional differentiation with a 49GHz Kerr soliton crystal microcomb source
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We report a photonic radio frequency (RF) fractional differentiator based on an integrated Kerr micro-comb source. The micro-comb source has a free spectral range (FSR) of 49 GHz, generating a large number of comb lines that serve as a high-performance multi-wavelength This study proposes a method to achieve stable confinement and efficient sympathetic cooling of a mixed ion system in dual radiofrequency (RF) traps by numerical simulations. The dynamic coupling behavior, sympathetic cooling mechanism, and efficiency-affecting

Radio frequency identification based smart parking system using Internet of Things
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The ideas of shrewd urban communities have consistently been a fantasy. There have been headways produced using the recent years to make a shrewd city dream to reality with the advancement of innovation, smart gadgets are getting increasingly normal in regular daily

CASE STUDIES OF ENERGY-BASED RADIO FREQUENCY SPECTRUM SENSING TECHNIQUE FOR COGNITIVE RADIO NETWORKS
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The trend to overcome wireless interference emerged in techniques like frequency agility, hopping, dual band technologies etc. However, these techniques suppress inter-operability of wireless technologies operating at the same frequency like Wi-Fi, ZigBee, Bluetooth, Z

RADIO FREQUENCY ENERGY MEASUREMENT AND BUDGETING TOWARDS DESIGN, OPTIMIZATION, AND DEVELOPMENT OF RF HARVESTING
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The study measured RF energy towards the design, optimization, and development of an efficient RF energy harvesting system in Katsina State, Nigeria. An SRM-3006 22 (Selective Radiation Meter), frequency selective measuring system was used for the environmental

5 THz bandwidth photonic radio frequency spectrum analyzer based on a CMOS-compatible high-index doped silica waveguide
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We report an all-optical radio frequency (RF) spectrum analyzer with a bandwidth greater than 5 terahertz (THz), based on a 50-cm long spiral waveguide in a CMOS-compatible high- index doped silica platform. By carefully mapping out the dispersion pro le of the

Literature review and technology readiness assessment of ultra-high frequency radio frequency identification to Canadian livestock applications
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The goal of this document is to perform a literature driven technology readiness assessment of ultra high frequency (UHF) radio frequency identification (RFID) systems for use in Canadian livestock identity and traceability settings. A comprehensive search and screening

Processed Radio Frequency towards Pancreas Enhancing the Deadly Diabetes Worldwide
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Diabetes is a chronic and debilitating disease, which is associated with a range of complications putting tremendous burden on medical, economic and socio-technological infrastructure globally. Yet the higher authorities of health services are facing the

Designing Positioning Coordinates of Powered Wheelchairs with Radio Frequency Identification
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We combine radio frequency identification (RFID) and the Quantum Geographic Information System (QGIS) to develop a positioning and warning system for powered wheelchairs rented for activities within a specific area. First, we begin with the use of Arduino to drive

Design and Development Of Lecturer Attendance System Using Radio Frequency Identification (RFID)
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Lecturer attendance record is required by the university to know the presence of lecturers in teaching in class. In general condition, lecturer attendance is recorded on the attendance sheet, or input to web application accessed on a class computer. However, there are some

Development and Characterization of Nb3Sn/Al2O3 Superconducting Multilayers for High-performance Radio Frequency Applications
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For decades, Nb has been the material of choice for the radio frequency superconducting (SRF) resonators for high-energy particle accelerators. Technological advances have resulted in the development of Nb cavities which can exhibit extremely high quality factors

Superconducting wide-band BRF for Geodetic VLBI Ob-servation with VGOS Radio Telescope to prevent radio frequency interference
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The Toshiba Group has developed wideband (1-14GHz) multi-band (hex-band) BRF using high-temperature superconductor (HTS). The VLBI Global Observing System (VGOS) specifications require wide-band operation of the receiver from 2 to 14 GHz. And in the LS

A Mutual Information Based Infrastructureless Radio Frequency Positioning System via Deep Learning
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We proposed a novel, scalable, spatial positioning solution based on existing radio frequency (RF) signals and available infrastructure by harvesting information from the signals, distilling the readings to get the mutual information gain of each perceived RF

Course Outline (W2021) ELE804: Radio Frequency Circuits and Systems
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This course deals with design of CMOS circuits for wireless communications. The theoretical component consists of: introduction to wireless communications, modulation schemes for wireless communications, characterization of RF circuits, architecture of RF transceivers

PHOTOVOLTAIC POWERED IRRIGATION SYSTEM BY CONTROLLING THE SOIL MOISTURE WITH RADIO FREQUENCY
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Solar powered water system are winding up progressively across the board. In any case, the underlying setup expenses of these frameworks are high. To decrease these costs, both the vitality utilization and the anticipation of misfortunes from water system frameworks areIn this work, a modelling approach of complete RF-MEMS (MicroElectroMechanical-Systems for radio frequency ) passives is discussed. The methodology takes into account both the non- linear electromechanical and the RF behaviour, and is suitable for being implemented and

The Effectiveness of 448 kHz Capacitive Resistive Monopoles Radio Frequency in Acute Ankle Sprain: A Case Report. J Altern Complement Integr Med 7: 141
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The aim of the present report was to find out the effect of 448 kHz Capacitive Resistive Monopolar Radiofrequency (CRMRF) in acute ankle sprain. A patient with right unilateral acute ankle sprain participated in the present case study. The patient followed a course of

Toward 6G communication networks: Terahertz frequency challenges and open research issues
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terahertz [THz]) to perform optimally. Based on the current radio frequency allocation chart, it is not possible to obtain such a wide contiguous radio spectrum below 90 GHz (0.09 THz). Interestingly, these con- tiguous blocks

Methods of Signal Detection and Recognition in Cognitive Radio Networks
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As a consequence, all considered in the paper procedures be employed by the local frequency control authorities to monitor radio frequency resource utilization UCRF: Register of radio frequency assignments (centralized assignments) 18

Outage Probability Analysis to Address Interference Vulnerabilities in Digital Mobile Radio Networks
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realistic DMR deployment scenario. Then, a model of the radio frequency interference is developed in a Rayleigh fading channel model where interferers are distributed according to a Poisson point process. The model takes

Construction plan of a radio telescope at the National Observatory on Mount Timau, Kupang, East Nusa Tenggara Indonesia
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Current status of development of 3.8 m optical telescope at Timau A plan for radio Telescope Development Radio Frequency Interference (RFI) Measurement at Timau Strategic and Future Plan Page 4 Page 9. Radio Frequency Interference measurement at Mt. Timau

The Pulsar Signal Simulator: A Python package for simulating radio signal data from pulsars
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et al., 1968). Today, most radio frequency observatories include dedicated equipment for observations of pulsars, eg, Roshi et al. (2019), Lynch et al. (2019), Stairs et al. (2019), Bailes et al. (2020). The phenomenal precision

Frequency-Scalable Coherent Radio-Over-Fiber Architecture for 100 Gbit/s Wireless Transmission
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caused by the frequency drift of the local oscillator laser. This approach further provides flexibility of the radio frequency (RF), with optical heterodyning by using a tunable laser diode. Experiments in the 57 GHz to 71 GHz Federal

The Deceleration of Radio/Light Transmission; A Collision Mechanism Dependent Radio Signal Emission, Transmission, and Reception
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The radio frequency shift and the wavelength reduction by the calculation demonstrate decelerations of radio/light transmission speeds due to the gradual reduced distance between two consecutive photon groups along the transmission pathway In this research, the Radio Frequency Plasma Spheroidization technique has been used for obtaining the req- uisite alumina powders Keywords: Radio frequency plasma spheroidization 3D Printing Spheroidized Al2O3 powders Surface morphology 1 Introduction

A Survey of RF Energy Harvesting Circuits
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Abstract: The aim of this work is, on one hand, to review the state of the art of the architectures and diodes used in radio frequency energy harvesting systems, the idea here is to review the most recent works, as well as their characteristics, which include frequency, type of diode

COMMISSION TUTORIALS
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A potential solution to overcome this challenge is to harvest energy from ambient energy sources, such as photovoltaic, thermoelectric and Radio Frequency and utilize this energy to supply the power for these devices. This

Biological Effects of Global System of Mobile Communication-A Review
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For instance, the radio frequency part of the electromagnetic is generals designed as when the part of spectrum where spectrum, where electromagnetic waves have frequencies within the range of 3KHz to 300GHz, is called microwave, which is a specific category of radio

Schwannoma of the posterior pharyngeal wall in a child
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was removed with plasma radio frequency excision via a transoral route, There was not seen any recurrence of tumor by examination of CT or MRI up to two years child, and the rst case in which the schwannoma was removed via transoral plasma radio frequency excision

Frequency multiplication by collective nano-scale spin wave dynamics
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tion itself. In the case of spin waves major attention went into studying the threshold behavior with 35 respect to the radio frequency (rf) pumping field showing that large excitation amplitudes drive non- 36 linear spin wave modes [13 17]

The Potential Role of Medial Branch Block as a Diagnostic Test in a Patient with Post Mastectomy Pain Syndrome
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We received the patient after conservative therapy failed and offered a radio frequency ablation to help with her pain We propose that and radio frequency ablation aimed at medial branches can somehow attenuate the sympathetic compo- nent of neuropathic pain

Virgo: A Versatile Spectrometer for Radio Astronomy
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Furthermore, Virgo supports optional median operations, both in the frequency and time domain, for the suppression of narrowband and/or short-duration radio frequency interference (RFI), while allowing the user to export the raw observation data as a FITS (Pence et al

Frequency comb formation in a driven mechanical oscillator
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combs have significantly transformed modern metrology and molecular spectro- scopy . In this work, using a resonantly driven nonlinear nanomechanical resonator with a high quality factor, we demonstrate direct analogue for an optical comb in the radio frequency domain

Design of a Five-Band Dual-Port Rectenna for RF Energy Harvesting
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λg 0.15 λg. The proposed circuit realized a measured peak RF-to-dc ( radio frequency direct current) power conversion efficiency (PCE) of (21%, 22.76%, 25.33%, 21.57%, and 22.14%) for an input power of −20 dBm. The RF

Preparation of protective coatings using polyorganosilazane-derived precursors and cerium as inhibitor to obtain an active protection of Al alloys
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64 Examination of the Hydrogen Incorporation into Radio Frequency Sputtered Hydrogenated SiNx Thin Films N. Hegedus 2*, C. Balazsi K. Balazsi1 1 Institute for Technical Physics and Materials Science, Centre for Energy Research, Budapest, Hungary 2 Doctoral School

Review on Optical Wireless Communication Technologies
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imagined. It is one of the most up-and-coming areas of research with incredible prospects of unprecedented outcomes which will noticeably modify the wireless market mostly dominated by radio frequency (RF) technologies

A Survey on Solar Cell based receivers used for Optical Wireless Communication
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ABSTRACT As of now, the Radio Frequency (RF) Spectrum results in heavy spectrum congestion I. INTRODUCTION In Contemporary communication systems, the foremost known frequency band is Radio Frequency (RF) band