In this paper, the authors present design of body phased array using optimized dual frequency patch antenna for C band focusing on 5 and 8GHz frequency band. Rat race coupler or hybrid coupler will work as a phase shifter. Simulation is done using IE3D for antenna and using Serenade for complete design for various parameters. ...
According to Federal Communication Commission (FCC) rules, the 3.1-10.6GHz band is allocated to the Ultra-Wide Band (UWB) applications. Due to the overlap of the currently allocated UWB frequency band with the communication systems such as Wireless Local Area Network (WLAN) bands in the 2.4GHz(2.4-2.484GHz), 5.2GHz (5.15-5.35GHz) and 5.8GHz(5.725-5.825GHz) bands and the World Interoperability for Microwave ...
In this paper, a comparative study is done for different routing protocols in mobile ad-hoc network by using directional antenna. The directional antenna is metamaterial rectangular patch antenna. Performance of MANET (Mobile Ad hoc NETwork) can be improved using metamaterial antenna, because of directivity and compact size of metamaterial antenna. Complexity of routing is day-by-day ...
There is a huge amount of data present on internet. The procedure to find important information on the web can be very hectic. Using today’s search engines it is hard to go through the big number of returned URLs and documents. Hence there is a need to arrange documents into groups using clustering. Categorizing related ...
Hadoop, the open-source implementation of Google’s MapReduce, has become enormously popular for big data analytics, especially among researchers. Due to Hadoop’s popularity, it is natural to ask the question: how well is it working to answer this question, the authors need to move beyond the conventional “Cluster-centric” analysis that models each job as an independent ...
Now-a-days, distributed databases have taken concentration in the database research. Data distribution and replication offer opportunities for improving performance through parallel query execution and load balancing as well as increasing the availability of data. These opportunities have played a major role in motivating the design of the current generation of database machines. This paper is ...
In this paper, the authors develop an automatic tripping mechanism for the three phase supply system. The project output resets automatically after a brief interruption in the event temporary fault while it remain remains in tripped condition in case of permanent fault. The electrical substation which supply the power to the consumers, have failures due ...