[PDF] Top 20 J. Microw. Optoelectron. Electromagn. Appl. vol.10 número1

... radiation mechanism of the backfire antenna is described in many references [4]-[10]. The first, simplified model of the backfire antenna radiation mechanism was very rough approximation to the real physical ... See full document

... Comparing the Figs. 10, 11, 12 and 13 it can be noted that, for both rotor types, the Three Level Control strategy presents a minor current slope. The current slope occurs during the application of reverse voltage ... See full document

... Abstract— This paper presents a qualitative analysis of the impact caused by fiber propagation effects and by a cascade of optical filters, designed for 10 Gb/s NRZ OOK transmission, and optical amplifiers on a 20 ... See full document

... Figures 2 and 3 show the amplitude and phase responses of the time-domain compensator for = 17 ps/[nm · km], z = 50 km, and T = 1/(56 · 10 9 )s (corresponding to the total accumulated dispersion of the ... See full document

... Although literature shows that metaheuristics can be used to synthesize FBGs, they suffer because of the high number of parameters needed to represent a FBG properly. Using the modeling based on uniform sections ... See full document

... This means that even if the other sources of uncertainty are adequately modeled, it may happen that the simulator error ends up masking the final results when compared with mea[r] ... See full document

... In Xu [10], wavelet analysis was used in ultrasound to bone characterization. This work investigates analysis of ultrasonic signals using time-frequency techniques to determine density and bone strength. ... See full document

... The TMB model provides better results than the EMB model in Bradesco, Cenesp15 and Scania links especially when thresholds greater than or equal to 10 dB are considered. In this case, the values of RMS error for ... See full document

... and 7896, respectively. With these discretizations we have a good convergence of the results. The dimensions used in these simulations are L=50nm, d=10nm, and thickness w=9.5; 10; 10.3; 10.6 (nm) for the antennas ... See full document

... Three force calculation methods are employed in the analysis of the computer-based problems: (i) virtual work; (ii) Maxwell stress tensor; (iii) weighted Maxwell stress tensor. Under their classical formulations, the ... See full document

... According to ITU-T G.657 standard, developed by Study Group 15, approved and introduced in December 2006 there are two categories in single-mode optical fiber design for access networks, which are the G.657A and G.657B ... See full document

... Moreover, comparing the degradation behavior between the two solutions and a non aged fiber, it’s visible a decay in the fracture stress as we increase the aggr[r] ... See full document

... Consequently, to obtain more accurate designs, it is necessary to use (13) and (14) instead of (11) and (12) in (8) to (10) to calculate the gain and analyzing the results, especially when the antenna length is ... See full document

... The hybrid modes dispersion curves generated by this characteristic equation were tested with the degenerated case of a hollow cylindrical corrugated guide by using an. isotropi[r] ... See full document

... [10]. The radiometry of temperature enhancements above a pre-existent bright level - as it is the case of flare radiation excess over the solar disk intense emission - requires the effective suppression of the ... See full document

... Applications - JMOe - collects extended versions of papers published at the Proceedings 2010. MOMAG, 14th SBMO - Simpósio Brasileiro de Microondas e Optoeletrônica and 9th CBMag -[r] ... See full document

... profile for a 20 m antenna separation with the line-of-sight path obstructed by a vehicle located 10 m away from the transmitter antenna. The direct signal reaches the receiver at 52 ns while the delayed ... See full document

... Abstract - In this experimental study a novel design has been developed to improve the antenna parameters in terms of impedance bandwidth and radiation properties. A 4-element rectangular array antenna (refereed as ... See full document

... The flame-brushed region of the fiber was the section into which the FBG should be imprinted. The number of Excimer laser pulses was recorded during the process together with the value of the reflectivity spectrum of the ... See full document

... Abstract— In this paper a highly polarization maintaining birefringent photonic crystal fiber at telecommunication window is reported via Full-Vectorial Finite Element Method (FV-FEM). By taking triangular lattice of ... See full document