نتایج جستجو برای: radio frequency identificationprinted circuit boards
تعداد نتایج: 657311 فیلتر نتایج به سال:
radio frequency identification (rfid) is used to identify the characteristics of an object wirelessly using radio waves. the purpose of this technology in this study is mainly focused on healthcare for inventory management and theft control replacing the manual logs. the storage and tracking of high-cost inventory items is developed. automatic reordering and billing interfaces are designed for ...
power transformers are important equipments in power systems. thus there is a large number of researches devoted of power transformers. however, there is still a demand for future investigations, especially in the field of diagnosis of transformer failures. in order to fulfill the demand, the first part reports a study case in which four main types of failures on the active part are investigate...
This analysis seeks to identify whether (and to what extent) the variation in gain and frequency response observed in the T304 module affects the science results, and if so, how many and which circuit boards in the T304 require replacement in order to bring the variation within acceptable limits. The gain difference between the two types of circuit boards is being addressed by removing 7dB of e...
recovery of gold and other valuable metals from electronic scrap involves a complex metallurgical flow sheet and requires state-of-the-art recovery technologies that are available in large-scale, integrated smelter and refinery operations. at the end of their use, electronic and other electrical product scrap offer an important recycling potential for the secondary supply of gold and silver int...
This paper investigates the power bus noise and power bus impedance of printed circuit boards with four different kinds of embedded capacitance. These boards have power-ground plane pairs separated by a very thin layer of material with high dielectric permittivity. It is shown that embedded capacitance effectively reduces power bus noise over the entire frequency range evaluated (up to 5 GHz).
Graphene has attracted much interest as a future channel material in radio frequency electronics because of its superior electrical properties. Fabrication of a graphene integrated circuit without significantly degrading transistor performance has proven to be challenging, posing one of the major bottlenecks to compete with existing technologies. Here we present a fabrication method fully prese...
RFID (Radio Frequency IDentification) technology bridges two technologies in the area of Information and Communication Technologies (ICT), namely Product Code (PC) technology and Wireless technology. This broad-based rapidly expanding technology impacts business, environment and society. The operating principle of an RFID system is as follows. The reader starts a communication process by radiat...
Embedding resistors into the laminate substrate of printed circuit boards (PCB) leads to a packaging miniaturization and a reduction of production costs. Additionally, it reduces the parasitics associated with surface mounted devices (SMD), due to shorter distances between active and passive components. Therefore, an improvement of the performance at higher frequencies can be achieved in terms ...
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