Low Pass Filter
Mostrando 1-12 de 42 artigos, teses e dissertações.
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1. Design and Implementation of Microwave Dual-Band Pass Interdigital Filter Using an Analytical Approach
Abstract In this paper, benefiting from frequency transformation between the normalized frequency domain of low-pass prototype frequencies and the real frequency domain of the filter, a purely analytical procedure for dual-band filter design is used. The coupling matrix of the filter is analytically extracted, without the need to perform numerical optimizati
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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2. Wide Band Stop Response Using Interdigital Capacitor/CSRR DGS in Elliptical Microstrip Low-Pass Filter
Abstract In this paper, a compact elliptic-response microstrip low pass filter (LPF) is presented with a wide stop-band using stepped impedance resonators. With high attenuation in the stop-band, the overall size reduction of the proposed filter is achieved using a novel defected ground structure technique using an interdigital capacitor and complementary sp
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-12
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3. Research on Sliding Mode Method about Three-Dimensional Integrated Guidance and Control for Air-to-Ground Missile
ABSTRACT Based on adaptive sliding mode-control and back-stepping design method, an integrated guidance and control method with less calculation is proposed, which is designed for air-to-ground missile during the terminal course in three-dimensional space. The model of the control system with nonlinear and coupling is simplified, then the integrated guidance
J. Aerosp. Technol. Manag.. Publicado em: 14/01/2019
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4. A Novel Design of an H-shaped Microstrip Diplexer
Abstract In this paper, a new microstrip diplexer using modified H-shaped resonators with a compact size and high isolation is presented. This circuit is designed for the ISM band at 2.4 GHz and GPS at 1.575 GHz. The proposed diplexer is formed by connecting two band-pass filters designed by using the modified H-shaped resonator and tapped microstrip Input/o
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-12
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5. Experimental Evaluation of Low-Pass Shock Isolation Performance of Elastomers Using Frequency-Based Kolsky Bar Analyses
Abstract Elastomeric materials are used as shock isolation materials in a variety of environments to dampen vibrations and/or absorb energy from external impact for minimizing energy transfer between two objects or bodies. Some applications require the shock isolation materials to behave as a low-pass mechanical filter to mitigate the shock/impact at high fr
Lat. Am. j. solids struct.. Publicado em: 2017-03
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6. Compact Microstrip Low-pass Filter with Wide Stop-band Using P-Shaped Resonator
Abstract This paper, a compact low-pass filter (LPF) with an Elliptic function response using P-shaped resonators is presented. The LPF with simple structure results in the low insertion loss less than 0.1 dB and high return loss better than 20 dB, in the pass-band. The proposed filter with a −3 dB cutoff frequency of 2.61 GHz is fabricated and measured. T
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2016-12
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7. Trypan blue exclusion assay by flow cytometry
Dye exclusion tests are used to determine the number of live and dead cells. These assays are based on the principle that intact plasma membranes in live cells exclude specific dyes, whereas dead cells do not. Although widely used, the trypan blue (TB) exclusion assay has limitations. The dye can be incorporated by live cells after a short exposure time, and
Braz J Med Biol Res. Publicado em: 18/03/2014
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8. A simple transformation of improved WLAN band pass to low pass filter using defected ground structure (DGS), defected microstrip structure (DMS) and multilayer-technique
A novel transformation of band pass- to low pass filter is introduced in this paper. First a compact microstrip band pass filter designed, optimized and realized by combining a simple multilayer method with magnetically coupled microstrip U-shaped DGS resonators is proposed. The DGS- and DMS-techniques demonstrated the ability to suppress the undesired harmo
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2013-06
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9. Análise dos esforços de alta intensidade de jogadores de futebol profissional / Analysis of high intensity efforts of professional soccer players
The aim of this work is to characterize the high intensity efforts performed by soccer players during official games. For these, nine games of the first division Brazilian championship game was recorded by four stationary digital video cameras, with acquisition frequency of 7.5 and 30 Hz, positioned in the highest points of the stadium. Players trajectories
Publicado em: 2010
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10. Hydrophobicity classification in high voltage polymeric insulators / Classificação da hidrofobicidade em isoladores elétricos poliméricos de alta tensão
The aim of this study is to propose a new method to classify the hydrophobicity (HC) in high voltage polymer insulators. Currently the HC is based on the STRI guide (Swedish Transmission Research Institute) published in 1992, where the hydrophobicity is classified by contact angle and/or amount of wet surface. In the proposed method, the HC was analyzed by d
Publicado em: 2009
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11. A contribuição da análise eletromiográfica de superfície para a definição da fase de evolução da paralisia facial periférica: fase flácida ou fase de seqüelas / The contribution of electromyographic analysis of the area for the definition of the stage of development of peripheral facial paralysis: flaccid or sequelae stage
OBJECTIVE: To evaluate the electromyographic profile in the normal and the affected faces in cases of facial paralysis, in its two extremes of evolution; musculature without neural input and musculature after regeneration neural aberrant. METHODS: Subjects with peripheral facial paralysis unilateral of any etiology, with age ranging from 18 to 69 years, of b
Publicado em: 2009
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12. Filtros passa-baixas ponderados e dados SRTM aplicados ao estudo do pantanal da Baixa Nhecolândia, MS: Aspectos tectônicos e de distribuição de lagoas hipersalinas / Weighted low-pass filter and SRTM data applied to Low Nhecolândia Pantanal (MS) study: tectonics aspects and hipersalines ponds arrangement
O Pantanal Matogrossense divide-se em onze sub-regiões com características muito distintas, entre elas a Nhecolândia, cuja porção oeste, a Baixa Nhecolândia, apresenta uma fisiografia única no planeta, com milhares de lagoas salinas e hipossalinas intercaladas de forma aparentemente aleatória. Este ambiente, inserido em uma planície muito mais ampla
Publicado em: 2008