In the past few years ,the wireless technology develop rapidly ,Slot antenna are extensive researched in the wireless applications . Slot antenna is the antenna which draws the gap in coaxial transmission lines, microwave cavity or waveguide transmission line ,making the electromagnetic radiation from the gap to the outer space to transport. Waveguide slot antenna
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To solve the problems of poor axial ratio and narrow bandwidth when transforming line polarization wave into circular polarization wave, this dissertation makes a deeply study on the optimization design of meander-line polarizer for circular polarization and novel innovative parameter optimization designs are proposed, which have been verified by experimental results.In this paper, two novel
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To solve the problems of poor axial ratio and narrow bandwidth when transforming line polarization wave into circular polarization wave, this dissertation makes a deeply study on the optimization design of meander-line polarizer for circular polarization and novel innovative parameter optimization designs are proposed, which have been verified by experimental results.In this paper, two novel
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With more than 550 million users in China mobile communications market, to all participants of the value chain, the high speed development of mobile data services is not only an opportunity, also a challenge.In maintaining the network comprehensive utilization ratio under the condition of invariable, enhance each line PDCH throughput rate and to reduce the
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The High-speed development of grid technology made more stringent network performance requirements, and optical network, with its characteristics of large bandwidth, low latency, low cost, and high reliability, is becoming the topmost important grid resources, thus, the concept of photonic grid came into being. The technology of optical network bandwidth virtualization has gradually become a
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Video target tracking is an important research orientation of computer vision area. It has important research value in science and engineering, production and life, which are widely used in intelligent human-computer interaction, medical diagnostics, intelligent robot, video surveillance and other areas. The Mean Shift algorithm is a fast and efficient technique for climbing density gradients
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The information technology is developing rapidly today, microwave communication frequency resources are becoming more and more precious and crowded, and the demands on microwave filter index are also getting higher and higher. Due to its advantage of good electromagnetic shielding, compact structure, lower pass-band insertion loss, small in size and big power capacity, metallic cavity
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As the main means of personal communication, the wireless mobile Communication technology is developed very fast after entering the 21-century. The International Telecommunications Union(ITU)has mentioned to use the IMT-2000/FPLMTS as 3G system. In 3G system there are more and higher requirements for antenna than the old systems. This article is to design and study 3G
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The high bandwidth required by live streaming (audio/video) limits the number of clients that can be served by a source using unicast. The best solution would have been IP-Multicast, but suffers from poor deployment hence the evolution of Application level Multicast.The p2p technology evolution overcame the bandwidth bottlenecks represented by the limited server capacities, favoring
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The high bandwidth required by live streaming (audio/video) limits the number of clients that can be served by a source using unicast. The best solution would have been IP-Multicast, but suffers from poor deployment hence the evolution of Application level Multicast.The p2p technology evolution overcame the bandwidth bottlenecks represented by the limited server capacities, favoring
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