Herein, we design a polarization convertor (PC) using two orthogonally polarized, tightly coupled dipole arrays (TCDAs) connected in cascade, of which one is used for the reception incident waves and other their transmission. The operation PC elucidated via cascading equivalent circuit unit cells polarized TCDAs. critical role vertical metal strips (VMSs) with regard to wide-angle insensitivity...

The use of wave energy by converting it into electricity depends on the efficiency converters, which are negatively affected marine factors. Many design flaws can be eliminated at stage and testing devices using its numerical models based application hydrodynamic theory propagation interaction waves with structures. modern computational methods hydrodynamics to determine influence some factors ...

Performance Evaluation Of Fuzzy Logic Controlled Bidirectional DC to DC Convertor Written by Administrator Wednesday, 16 March 2011 08:49 Last Updated Monday, 21 March 2011 07:38 This paper presents the systematic design procedure of fuzzy logic controller for the coupled inductor bidirectional DC-DC converter. The converter contains nonlinear elements making the mathematical model more complex...

Presented paper describes design and realization of a sensor system for tilt measurement in x and y axes directions in the range of 680°. For construction non-standard connection with accele rometer is used. Measurement is controlled by a microprocessor, measured data are sent to a PC via RS232. The PC is used for data storage, further calculations and display of measured tilt. Convertor of log...

Day by day increasingly, new types of wireless devices are being introduced. These devices have access to the internet. Thus the spectral efficiency of the current network needed to be improved. For this OFDM signals are introduced. In this paper, we propose to discuss the technique to reduce the peak to average power ratio for an OFDM signal, so that it can be used further. Also different tech...

This paper describes the Curvelets Transform method to get the significant results for the MRI images. To study and understanding of different kinds of MRI Images and formats like jpg, bmp, tiff, png and conversion of real MRI Images into the basic standards using convertor (Image Viewer). Implementation of Curvelets method is done on different image formats. Also the calculation of Mean square...

In order to research the influence of the contamination around the external insulating surface of DC voltage divider with different types in the electic field distribution by using the finite element method, a two dimensional axisymmetric model of the DC voltage divider in Longquan convertor station is built. Through the calculation comparison in electrostatic and quasi-electrostatic field, the...

Performance Evaluation Of Fuzzy Logic Controlled Bidirectional DC to DC Convertor Written by Administrator Wednesday, 16 March 2011 08:49 Last Updated Monday, 21 March 2011 07:38 This paper presents the systematic design procedure of fuzzy logic controller for the coupled inductor bidirectional DC-DC converter. The converter contains nonlinear elements making the mathematical model more complex...

We reported a record high power (>250 mW) and compact near-infrared fiber-optic femtosecond Cherenkov radiation source and its new application on nonlinear light microscopy for the first time (to our best knowledge). The high power femtosecond Cherenkov radiation was generated by 1.03 μm femtosecond pulses from a portable diode-pumped laser and a photonic crystal fiber as a compact, flexible, a...