نتایج جستجو برای: the proposed ota
تعداد نتایج: 16060300 فیلتر نتایج به سال:
Several over-the-air (OTA) test methods have been proposed to characterize the radiated performance of multiple input multiple output (MIMO) devices. Knowing that antenna gain and spatial correlation are important factors to system performance, it has become necessary to include OTA testing of MIMO antenna performance. This paper will discuss three predominant OTA test methods including the two...
This article aims to present the design of a 4.5-V, 450mA low drop-out (LDO) voltage linear regulator based on a twostage cascoded operational transconductance amplifier (OTA) as error amplifier. The aforementioned two-stage OTA is designed with cascoded current mirroring technique to boost up the output impedance. The proposed OTA has a DC gain of 101 dB under no load condition. The designed r...
An aptamer to selectively detect ochratoxin A (OTA) in cereals was developed using silver nanoparticles (AgNPs) combination with reduced graphene oxide (rGO). As a result of characterization experiments conducted this study, AgNPs were confirmed be polydisperse. The electrocatalytic activity achieved by immobilizing OTA-bovine serum albumin (OTA-BSA) on the rGO/AgNPs substrate. On basis experim...
A compact OTA suitable for low-voltage active-RC and MOSFET-C filters is presented. The input stage of the OTA utilises the NMOS pseudo-differential amplifier with PMOS active load. The output stage relies upon the dual-mode feed-forward class-AB technique (based on an inverter-type transconductor) with common-mode rejection capability that incurs no penalty on transconductance/bias-current eff...
there are two major theories of measurement in psychometrics: classical test theory (ctt) and item-response theory (irt). despite its widespread and long use, ctt has a number of shortcomings, which make it problematic to be used for practical and theoretical purposes. irt tries to solve these shortcomings, and provide better and more dependable answers. one of the applications of irt is the as...
background ochratoxins belong to a group of mycotoxins produced as the secondary metabolites by filamentous fungi, such as aspergillus and penicillium. these toxins may be teratogenic, mutagenic, hepatotoxic, nephrotoxic, and may have immunosuppressive effects and pose a serious health problems to exposed humans and animals. objectives the present study aimed to determine the level of ochratoxi...
The increasing demand of personal health monitoring products with long battery life had forced designers to use of those circuits which consume low power. Operational Transconductance Amplifier (OTA) operating in subthreshold (weak inversion) region introduces a versatile solution for the realization of low power VLSI building blocks. This paper is focused on design of high performance OTA thro...
among the low–dimensional allotropes of carbon, nanotubes and graphene have attracted very much attention from nano–science and nanotechnology specialists. they have been proposed as building blocks in nanometer device engineering. however, these structures are not defect–free. in this thesis, we focused on defective carbon nanotubes and graphene, and studied the effect of couple of very common...
nowadays in trade and economic issues, prediction is proposed as the most important branch of science. existence of effective variables, caused various sectors of the economic and business executives to prefer having mechanisms which can be used in their decisions. in recent years, several advances have led to various challenges in the science of forecasting. economical managers in various fi...
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