In this paper a very simple micro-strip rectangular patch antenna is proposed with circular polarization and enhanced bandwidth for mobile Ad Hoc network. By using the orthogonal feed orthogonal linear components has been produced having phase difference of odd multiple of 90 ̊. For enhancing the bandwidth the rectangular patch has been truncated. The bandwidth of antenna is 12%. The proposed an...

This paper presents a study of a novel monopole antenna for ultra wide-band (UWB) applications. Printed on a dielectric substrate and fed by a 50 Ω micro strip line, a planar circular disc monopole has been demonstrated to provide an ultra wide 10 dB return loss bandwidth with satisfactory radiation properties. The parameters which affect the performance of the antenna in terms of its frequency...

AC-driven electrothermal flow is used to enhance the chaotic mixing through vortex flow in micro-fluidic systems by nearly an order of magnitude. Diffusion of heat and momentum can be increased because of the electrothermal force acting on the fluid through the applied AC electric field. Numerical simulation of vortex-assisted mixing in circular microchannel flow is investigated by solving a se...

Circular economy is a new economic operation mode that emphasizes symbiosis and synergism the formation of an ecological network resource recycling its fundamental feature. The article takes development ship breaking industry in Sitakunda, Chattogram Division, Bangladesh as case This paper analyzes on evolution process micro law circular industrial chain, probes into mechanism chain coupling, a...