ENGINEERING RESEARCH EQUIPMENT: Wideband Millimeter-Wave System for Studying Waves in Composite Materials and Disordered Media

9311274 Kuga华盛顿大学电气工程系将购买毫米波（MMW）设备，用于支持工程领域的跨学科研究。 该设备将用于几个项目，包括（i）粗糙表面的双站散射，（ii）无序介质中毫米波的局部化，（iii）密集分布颗粒的相干反射率，以及（iv）复合材料和光子间隙材料的表征。在NSF的赞助下，我们对无序介质中的波传播和散射进行了广泛的实验、数值和理论研究。 这些研究在许多工程问题中具有潜在的应用，包括波的局部化、光子间隙材料、环境的遥感和监测、通信、生物介质的成像以及复合材料的表征。 我们的主要目标是了解波与随机或不均匀介质的相互作用，目的是将结果应用于各种工程问题。 我们强调了分析研究、控制实验和数值模拟相结合的重要性。 然而，我们的毫米波实验是不够的，我们现在和未来的研究，因为有限的带宽。 宽带毫米波将大大扩展我们的研究范围，包括无序介质中的短脉冲和材料表征。***

9311274 Kuga The Department of Electrical Engineering at the University of Washington will purchase millimeter wave (MMW) equipment which will be dedicated to support interdisciplinary research in engineering. The equipment will be used for several projects, including (i) bistatic scattering from rough surfaces, (ii) localization of MMW in disordered media, (iii) coherent reflectivity of densely distributed particles, and (iv) characterization of composite materials and photon gap materials. Under NSF sponsorship, we have been conducting extensive experimental, numerical and theoretical studies on wave propagation and scattering in disordered media. These studies have potential applications in many engineering problems including localization of waves, photon gap materials, remote sensing and monitoring of environments, communications, imaging of biological media, and characterization of composite materials. Our main objective is to understand the interactions of waves with random or inhomogeneous media with the aim of applying the results to various engineering problems. We have emphasized the importance of combining analytical studies, controlled experiments, and numerical simulations. However, our MMW experiments are inadequate for our present and future studies because of the limited bandwidth available. The proposed wide band MMW will significantly expand the scope of our research to include short pulses in disordered media and material characterizations. ***