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Additively Manufactured Frequency Selective Structures on Curved Surfaces

机译：曲面上的累加制造频率选择结构

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Two different additive manufacturing methods are employed to pattern a curved plastic surface with a frequency selective structure (FSS). Here, a dielectric lens is used as a proof of concept for a curved surface and the FSS is a bandstop filter designed to operate near 150 GHz. An aerosol jet printing process is used to directly print the FSS onto a planar surface and a lens structure. Additionally, a patterned FSS is demonstrated by printing the test structures with the pattern pre-inset into the dielectric, sputtering them with copper, and then selectively removing the copper from the unpatterned area. This procedure is also known as a damascene-like process. Structures are printed using a Formlabs Form 2 printer, which uses a stereolithography (SLA) technology, and a clear colored high temperature curing resin as the build material. Simulations are performed using ANSYS HFSS and measurements were taken using an Emcore frequency domain THz system.
机译：采用两种不同的增材制造方法来对具有频率选择结构（FSS）的弯曲塑料表面进行构图。此处，将介电透镜用作曲面的概念证明，而FSS是设计为在150 GHz附近工作的带阻滤波器。使用气溶胶喷射印刷工艺将FSS直接印刷到平面和透镜结构上。另外，通过将具有预插入图案的测试结构印刷到电介质中，用铜溅射它们，然后从未形成图案的区域选择性地去除铜，可以证明已形成图案的FSS。此过程也称为镶嵌样过程。使用Formlabs Form 2打印机打印结构，该打印机使用立体光刻（SLA）技术，并使用透明的彩色高温固化树脂作为构建材料。使用ANSYS HFSS进行仿真，并使用Emcore频域THz系统进行测量。

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