标题： 基于介质和增材制造技术的倏逝模波导滤波器的设计与实现 显示英文标题

标题： Design and Implementation of Evanescent Mode Waveguide Filters Using Dielectrics and Additive Manufacturing Techniques

摘要： 在本研究中，我们描述了使用渐逝模波导和介质谐振器设计带通滤波器的设计方法，并采用增材制造技术实现。 使用一种低成本的商用介质材料（ABSplus），广泛用于熔融沉积建模（FDM）3D打印机，设计了两个五阶C波段切比雪夫渐逝模波导滤波器。 滤波器的外壳使用传统的计算机数控（CNC）加工技术制造。 还讨论了实际制造考虑因素，包括介质和金属部件的集成。 我们首先讨论了使用两种不同谐振器几何结构的两个原型板。 然后展示了如何通过改变相同金属外壳中的3D打印部件，轻松实现不同的传递函数。 原型板显示分数带宽在3%到4.6%之间，回波损耗优于RL=18dB，无杂散范围为SFR=1GHz。 插入损耗优于IL=4.3dB。 尽管塑料材料的介质损耗被显示较高，但测量结果相当满意，这清楚地表明这种策略可能适用于快速生产实现复杂几何结构的低成本微波滤波器。 显示英文摘要

摘要： In this contribution, we describe the design of bandpass filters using evanescent mode waveguides and dielectric resonators implemented with additive manufacturing techniques. Two C-band Chebyshev evanescent mode waveguide filters of order five have been designed using a low cost commercial dielectric material (ABSplus), widely used by Fused Deposition Modeling (FDM) 3D printers. The housings of the filters have been manufactured using traditional computer numerical control (CNC) machining techniques. Practical manufacturing considerations are also discussed, including the integration of dielectric and metallic parts. We first discuss two breadboards using two different resonator geometries. We then demonstrate how different transfer functions can be easily implemented by changing the 3D printed parts in the same metallic housing. Breadboards show fractional bandwidths between 3% and 4.6% with return losses better than RL=18dB, and spurious free ranges of SFR=1GHz. Insertion losses are better than IL=4.3dB. Even though dielectric losses from the plastic material are shown to be high, the measured results are quite satisfactory, thereby clearly showing that this strategy maybe useful for the fast production of low cost microwave filters implementing complex geometries.