XYZ-On-a-Chip: Micromachined Magnetically Reconfigurable Frequency Selective Surfaces

XYZ 片上：微机械磁性可重构频率选择表面

• 批准号: 0089095
• 负责人: Jack Judy
• 金额: $ 50.65万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-01-01 至 2005-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0089095&HistoricalAwards=false
• 关键词: XYZ; Chip; Micromachined; Magnetically; Reconfigurable

This grant provides funding for the research and development of reconfigurable Frequency Selective Surfaces (FSSs). FFSs are periodic structures that can provide frequency filtering to electromagnetic signals from wireless and satellite communication systems. With the proper design of the size and spacing of an array of conductive dipole elements, one is able to select the overall frequency response and bandwidth of the structure. Although FSSs have been studied rigorously over the years, FSSs have experienced tremendous growth in the last ten years with new applications emerging. The primary utilization of they has been as frequency filters (diplexers) in high-performance reflector-antenna systems, advanced radome designs, and smart surfaces for stealth applications. In many of these applications it is highly desirable to be able to adaptively reconfigure the frequency and bandwidth response of the FSS. However, a fundamental challenge has been to develop methods of achieving significant high-speed reconfigurability without compromising filtering performance.Although FSSs are typically made with static in-plane elements, it has been observed that rotating the dipole elements out of the plane of the surface strongly alters the frequency response of the surface. In addition, recent advances and developments in micromachining and MEMS technologies provide a new approach to this problem. The reconfigurability of the FSS proposed here, is enabled by the integration of novel magnetic microactuator arrays positioned in the x-y plane of the surface and capable of large out-of-plane rotations (0 degrees to 90 degrees) that tune its frequency bandwidth response. To maximize magnetic microactuator performance, permanent magnetic materials will be integrated into the array by newly developed electrodeposition processes. The goal of this project is to design, fabricate, and test micromachined reconfigurable FSSs for signals at K-band (26-40 GHz), Q-band (40 GHz), W-band (60 GHz), and higher frequencies.

该拨款为可重新配置的频率选择表面（FSS）的研究和开发提供资金。 FFS是可以对来自无线和卫星通信系统的电磁信号提供频率滤波的周期性结构。 通过适当设计导电偶极元件阵列的尺寸和间距，能够选择结构的总体频率响应和带宽。 虽然多年来对FSS进行了严格的研究，但在过去的十年中，随着新的应用的出现，FSS经历了巨大的增长。 它们的主要用途是作为高性能反射器天线系统中的频率滤波器（双工器），先进的天线罩设计和隐身应用的智能表面。 在许多这些应用中，非常希望能够自适应地重新配置FSS的频率和带宽响应。 然而，一个根本的挑战一直是发展的方法，实现显着的高速可重构性，而不损害filtering performance.Although FSS通常是静态的面内元件，它已被观察到，旋转的偶极子元件的表面的平面强烈改变的表面的频率响应。 此外，微机械加工和MEMS技术的最新进展和发展提供了一种新的方法来解决这个问题。 这里提出的FSS的可重新配置性是通过集成位于表面x-y平面中的新型磁性微致动器阵列来实现的，并且能够进行大的平面外旋转（0度至90度），从而调整其频率带宽响应。 为了最大限度地提高磁性微致动器的性能，永磁材料将通过新开发的电沉积工艺集成到阵列中。 该项目的目标是设计、制造和测试用于K波段（26-40 GHz）、Q波段（40 GHz）、W波段（60 GHz）和更高频率信号的微机械可重构FSS。