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A broadband low-profile circular-polarized (CP) antenna on an artificial magnetic conductor (AMC) reflector is proposed in this letter. The basic wideband circular polarization radiation characteristic of the antenna is achieved by feeding broadband crossed dipole through a 90° phase shifter. An AMC reflector is further introduced to realize a broadband low-profile CP antenna. The impedance bandwidth...
A dual-band and dual-polarized fractal antenna for WLAN applications is presented in this paper. This design is based on the Sierpinski fractal antenna base station antennas. It is composed of two similar fractal antenna cross each composition. Antenna is composed of two different heights of the L-shaped feeder fed to achieve a dual polarization. The simulated and measured results show that the proposed...
The goal of service composition is to create value-added services which automatically composed of exiting services based on dynamic user requirements. Most research on service composition is based on logical reasoning, and do not consider dynamic services requirements and network status. In this paper we present a novel resource-oriented algorithm. The resource-oriented algorithm integrates service...
A coplanar wave guide (CPW)-fed ultra-wideband antenna with fork-like radiation patch is presented. The antenna consists of CPW ground with a wide slot, the fork-like radiation patch and the 50 Ω CPW fed structure. In this design, by adjusting the dimensions of the wide slot, a very wide impedance bandwidth has been produced. The detailed parameters of the proposed antenna are investigated by using...
Internet has evolved greatly from its original incarnation. For instance, at the time TCP was designed, network interface devices were expensive components, and hence multi-path of end hosts was beyond the ken of research. Along with growth and changed in economy, increasing emphasis on end-to-end transfer efficiency has brought multi-path within the purview of transport layer, thus transforming transport...
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