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•Case Study Of Urban Propagation

By Steve Fast, Remcom, Inc.

Abstract
Many applications require detailed knowledge of antenna performance as deployed in a realistic setting. To solve such problems, the complementary capabilities of XFdtd and Wireless InSite are highly effective and easy to use. Outdoor wireless systems, as well as indoor/outdoor systems, are rapidly being used for cellular, WiFi, and emergency services. We have selected several city blocks in Chicago to demonstrate how Remcom's tools can be integrated. The gain pattern for the array antenna will be computed using XFdtd while the coverage will be found using Wireless InSite.

Wireless InSite® allows RF communications engineers to accurately analyze the impact of the physical environment on the performance of wireless communication systems. The software provides a broad range of site-specifi c predictions of propagation and communication channel characteristics in complex urban, indoor, rural and mixed path environments. Most of these results are derived from accurate solutions to the underlying EM wave propagation problem determined by the UTD (Uniform Theory of Diffraction) and FDTD (Finite Difference Time Domain) methods.

Remcom's XFdtd® is a full wave three dimensional electromagnetic solver based on the FDTD method. Complicated CAD objects with thousands of parts may be imported into XFdtd and combined and edited within XFdtd using the internal graphical editor. RF designers can import an electromechanical CAD fi le, improve the design using XFdtd, then export the revised CAD fi le to reduce design time. Applications include microwave, radio frequency (RF), antennas, scattering, biological EM including Magnetic Resonance Imaging (MRI) and Specifi c Absorption Rate (SAR), photonics, packaging, Electromagnetic Compatibility (EMC), and electromagnetic behavior of specialized materials.

Click Here To Download:
•Case Study Of Urban Propagation