In this note we examine the change of the PMT pulse gain as a function of DC background current using an active divider and compare its behavior to the one obtained using a passive network. We show that the present version of the active divider results in: 1) constant gain over a large background current (rendering possible to operate the FD under the presence of some backscattered moon light, ...

A quadrifilar helix antenna (QHA) operating at 0.94GHz is designed and realized in this paper. The designed QHA consists of four helical conductors which are excited in phase quadrature by employing a Wilkinson divider which shows good performance in return loss and transmission characteristic. According to the designed parameters of the helices and Wilkinson divider, a QHA is fabricated and me...

The letter describes a novel, continuum-based approach, to capture the evolution of electromechanical dynamics in power network following disturbance. Such approach is based on frequency divider formula (FDF) , which was recently proposed by third author. A key point obtaining frequency (FDF) a...

Laser Doppler anemometer (LDA) experiments were performed to gain quantitative information on the differences between the large-scale flow phenomena in a non-stenosed and a stenosed model of the carotid artery bifurcation. The influence of the presence of the stenosis was compared to the effect of flow pulse variation to evaluate the feasibility of early detection of stenosis in clinical practi...

Lightning impulse measurements can be highly influenced by measurement arrangement, characteristics of high voltage divider, digitizer (transient recorder) performance, and algorithms used for parameter evaluation. The main sources of measurement errors are the non-ideal step responses of digitizer and voltage divider. This paper discusses the use of deconvolution to correct for the non-ideal s...

An arbitrary multi-way radial power divider/combiner with high-power capacity based on the coaxial waveguide TE 01 -mode is presented in this paper. The study of shows divider can operate base mode a large diameter, which allow waveguides to be radially distributed along circumference waveguide. equivalent circuit model used analyze its design procedure including matching section, improve trans...

Background and Objectives: In this paper, a new design strategy was proposed in order to enhance bandwidth and efficiency of power amplifier. Methods: To realize the introduced design strategy, a power amplifier was designed using TSMC CMOS 0.18um technology for operating in the Ka band, i.e. the frequency range of 26.5-40GHz. To design the power amplifier, first a power divider (PD) with a ver...

The spatial distribution of intimal thickening was determined for each of 42 carotid bifurcations removed at autopsy from patients with no clinical or anatomic evidence of cerebrovascular disease. Both right and left specimens were available for six of the individuals. Each bifurcation was removed intact and included a 1.5-2.9-cm length of the common carotid artery and a 1.5-2.5-cm length of th...