The immense demand for communication systems worldwide has created an enormous market for semiconductors devices (SiGe HBTs) in variegated applications. Nowadays SiGe HBTs are surpassing even the fastest III-V production devices in the GHz speed orbit. Scaling has been the prime source of supremacy behind the successful technology innovations. The design and optimization of un-scaled and scaled...

This paper introduces a novel silicon-on-insulator (SOI) metal–semiconductor field-effect transistor (MESFET) with an implanted N layer (INL-SOI MESFET) to improve the DC and radio frequency characteristics. The DC and radio frequency characteristics of the proposed structure are analyzed by the 2-D ATLAS simulator and compared with a conventional SOI MESFET (C-SOI MESFET). The simulated result...

introduction lentil (lens culinaris medic) is an important and highly nutritious crop belonging to the family of legumes. lentil is cultivated worldwide but competition with weeds is a problem affecting production and can reduce yield by more than 80%. the study on the separation of impurities in bulk lentils (euphorbia helioscopia weed, wild oat weed and etc.) by a gravity separator has an ext...

The maximum oscillation frequency (fmax) quantifies the practical upper bound for useful circuit operation. We report here an fmax of 70 GHz in transistors using epitaxial graphene grown on the C-face of SiC. This is a significant improvement over Si-face epitaxial graphene used in the prior high-frequency transistor studies, exemplifying the superior electronics potential of C-face epitaxial g...

a portable and light pneumatic branch shake system was designed and manufactured in this research for harvesting fruits that can be harvested by shaking branch. required air flow and electric current are provided for operating system from category containing electrical generator and air compressor on wheelbarrows and portable chassis. vibration is equipped by programmable logic controller (plc)...

Without any approximation, this paper presents a numerical analysis of full Poisson-Nernst-Planck equation to investigate periodical potential and ion transport in microchannel under an AC electric field perpendicular to a wall in broad frequency range. Numerical solutions indicate that behavior of periodical potential and ion concentration oscillation strongly depend on frequency. The study fo...

The land-sea surface temperature contrast on the western coast of Sumatra Island was examined using observation data obtained from the pre-Years of the Maritime Continent (YMC) field campaign from November to December 2015. Surface observations showed that, on most days, strong daytime solar radiation caused a pronounced diurnal cycle in surface air temperatures on the island, even during the l...

A stochastic barotropic model linearized about the 850-mb flow is used to investigate the relationship between wind variations associated with the Madden–Julian oscillation (MJO) and eddy kinetic energy variations in the Tropics. Such a model is successful in predicting the observed location of eddy kinetic energy maxima during the westerly phase of the MJO and the suppression of eddy activity ...