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Comparative Analysis of Three Types of VHF/UHF Antennas for GPR Array
(Universidad Nacional Tecnológica de Lima Sur, 2020)
This article presents the comparative analysis of antennas for Ground Penetration Radars (GPR) that operate in the VHF/UHF band around 200 MHz. Three types of antennas are optimized to improve bandwidth, obtain a gain ...
Análisis, diseño e implementación de un Banco de prácticas para el uso de antenas de la Banda C, KU, VHF Y UHF
(2021)
The main objective of this research project is the analysis, design and implementation of a bench of practices for the use of C, Ku, VHF and UHF band antennas for practical use in the telecommunications laboratory of the ...
System of acquisition of information for measurement of radioelectric parameters in linear antennas in the band of VHF and UHF’s televisionSistema de adquisición de datos para la medición de parámetros radioeléctricos en antenas lineales en la banda de TV de VHF y UHF
(Universidad EAFIT, 2007-06-01)
Inference of X-Ray Emission from a Plasma Focus Discharge: Comparison between Characteristic Parameters and Neural Network Analyses
(Institute of Electrical and Electronics Engineers Inc., 2020)
Pulsed plasma discharges, such as the plasma focus, are a source of pulsed X rays, therefore it is desirable to understand the relationship between this fast transient phenomena and the electrical variables of the discharge. ...
Projeto de uma antena yagi-uda
(Universidade Estadual Paulista (Unesp), 2019)
The Yagi-Uda antenna is one of the most used antennas in a telecommunications system because of its high directivity and low cost. It can be designed to operate in different spectral ranges, with greater application in HF, ...
DESARROLLO DE ANTENAS PARA LA TECNOLOGÍA DE RFID PASIVA EN LA BANDA DE UHF (902A928MHZ)
(2011-12-12)
The' technology' of' RFID' systems' are' frequently' used' in' the' objects'
identification,' control' and' tracking.' These' systems' are' formed' by' a' reader,' the'
propagation' media' (the' free' space)' and' a' ...
Diseño y fabricación de una antena Cuasi-Fractal para la banda UHF
(2018-07-02)
RESUMEN:
Este trabajo presenta el diseño de una antena cuasi fractal, utilizando los principios
teóricos y características de una antena tipo cruz, reduciendo sus dimensiones
mediante los principios básicos de un fractal, ...
Análisis y evaluación del espectro radioeléctrico en las bandas VHF y UHF mediante un algoritmo realizado en radio USRP para uso potencial del estándar IEEE 802.11af en la zona urbana del cantón Ambato.
(Escuela Superior Politécnica de Chimborazo, 2017-10)
For the present investigation the radio spectrum was analyzed and evaluated in the frecuency
bands assigned to television in VHF and UHF by means of an algorithm realized in radio defined
by software in NI USRP 2920 of ...
Equatorial scintillation and systems support
(American Geophysical Union, 1997-09)
The need to nowcast and forecast scintillation for the support of operational systems has been recently identified by the interagency National Space Weather Program. This issue is addressed in the present paper in the ...
Análise da propagação troposférica sobre terrenos irregulares em VHF e UHF utilizando equações parabólicas e o desenvolvimento de um novo modelo híbrido para predição de perda de percursoAnalysis of tropospheric propagation over irregular terrain in VHF and UHF bands using parabolic equations and the development of a new hybrid path loss prediction model
(Universidade Federal de UberlândiaBrasilPrograma de Pós-graduação em Engenharia Elétrica, 2017)