This paper presents a high-efficiency ferrite meander antenna (HEMA), which can be used to realize a 2 × 2 multipleinput-multiple-output (MIMO) communication system when it is used at both the transmitter and the receiver ends. This antenna is designed to operate at 2.45GHz center frequency (fc). It consists of two spatially separated half-cycle microstrip meander structures. Ferrite material i...

This paper analyzes geometrical approaches to optimize the fluid cooling circulation of motorized spindles. The spindle cooling’s effectiveness, efficiency and influence on machine’s precision are analyzed through observations stator temperature, pressure drop thermal asymmetry, respectively. observation is based a validated coupled thermal/fluid mechanical simulation model. widely used helix m...

Control modes of band gap in meander-shaped permalloy (NiFe) thin films have been investigated by the method micromagnetic modeling. The electrodynamic problem is considered finite element and dispersion characteristics spin waves are obtained when geometrical parameters meander changed. character changes frequency ranges Bragg gaps depending on profile has investigated. results can be used to ...

Motivated by evaluating the limiting distribution of randomly biased random walks on trees, we compute the exact value of a negative moment of the maximal drawdown of the standard Brownian meander.

Explicit expressions for the occupation time distribution of Brownian bridge, excursion and meander are derived using Kac’s formula and results of [4]. The first two distributions appeared in [8], and were derived using weak convergence of simple random walk.

Abstract—In this paper, multiband meander-line antennas have been proposed which are of folded type meander–line antennas. The simulation performed in this paper used CST_STUDIO_2012. Far-field response, efficiency, gain, directivity and reflection coefficients have been chosen as performance factors for measuring antenna quality. Total four models have been represented in this paper starting f...

We present results from an extensive study of fluctuation phenomena in superconducting nanowires made from sputtered NbN. Nanoscale wires were fabricated in form of a meander and operated at a constant temperature T≈0.4Tc(0). The superconducting state is driven close to the electronic phase transition by a high bias current near the critical one. Fluctuations of sufficient strength temporarily ...

Parallel programming is characterized by a growing set of parallel architectures, paradigms and programming languages. The question how to support a programmer best in designing and implementing a parallel program is still an important topic of research. This is especially true when trying to utilize distributed memory machines (e.g. Transputers or workstation clusters). For many application ar...

In this paper, a compact microstrip diplexer is proposed for Wimax and DCS applications at 2.5 GHz and 1710-1880 MHz respectively. The microstrip diplexer consists of two band-pass filters operating at different frequency bands and a coupledjunction. Each filter is formed by a meander-line resonator and two Input/Output feed lines. The frequency response of each filter can be easily controlled ...

A new current structure for the fast traveling-wave 2.5MeV beam chopper in the front end of the Spallation Neutron Source (SNS) has been suggested in [1]. The structure is based on the meander-folded notched stripline with dielectric supports and separators. Its design has been optimized using electromagnetic 3-D modeling with the MAFIA code package to provide rise and fall times in the range o...