毫米波MEMS传输线的创新设计与仿真研究

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本文是一篇关于新型毫米波微机电系统(MEMS)共面波导(CPW)传输线的设计与仿真研究论文,由周亚林撰写,发表在中国科技论文在线。研究背景是北京邮电大学电子工程学院在中央大学基金的支持下(编号:2009RC0302),主要关注5至60GHz频段的应用。 作者周亚林,1984年出生,男,电子工程硕士学位,电子邮箱为zhouyalin1984@163.com。论文的核心内容围绕新型MEMS CPW设计展开,特别强调了微屏蔽和开槽技术的应用,这些设计旨在减少信号传输过程中的损耗,提高其性能。通过保角变换法,作者精确地计算了共面波导的电容,进而探讨了其传播特性,如特性阻抗和有效介电常数。仿真结果显示,新型MEMS CPW的损耗明显降低,性能与传统CPW相比具有竞争优势。 这种设计的优势在于它能够广泛应用于相移器、滤波器以及天线等毫米波设备中,特别是对于对低损耗和性能提升有高要求的场景,如无线通信和雷达系统。由于其独特的设计和优异的性能,新型MMW MEMS CPW传输线可能成为未来毫米波技术发展的一个重要方向,对于缩小器件尺寸、提高信号处理效率和可靠性具有重大意义。通过这篇论文,作者不仅分享了设计方法,还为该领域的工程师和研究人员提供了宝贵的参考依据。

用中文总结以下内容: A number of experimental and numerical investigations have been conducted to study the MBPP stack and wavy flow field characteristics with various designs [10,11]. T. Chu et al. conducted the durability test of a 10-kW MBPP fuel cell stack containing 30 cells under dynamic driving cycles and analyzed the performance degradation mechanism [12]. X. Li et al. studied the deformation behavior of the wavy flow channels with thin metallic sheet of 316 stainless steel from both experimental and simulation aspects [13]. J. Owejan et al. designed a PEMFC stack with anode straight flow channels and cathode wavy flow channels and studied the in situ water distributions with neutron radiograph [14]. T. Tsukamoto et al. simulated a full-scale MBPP fuel cell stack of 300 cm2 active area at high current densities and used the 3D model to analyze the in-plane and through-plane parameter distributions [15]. G. Zhang et al. developed a two-fluid 3D model of PEMFC to study the multi-phase and convection effects of wave-like flow channels which are symmetric between anode and cathode sides [16]. S. Saco et al. studied the scaled up PEMFC numerically and compared straight parallel, serpentine zig-zag and straight zig-zag flow channels cell with zig-zag flow field with a transient 3D numerical model to analyze the subfreezing temperature cold start operations [18]. P. Dong et al. introduced discontinuous S-shaped and crescent ribs into flow channels based on the concept of wavy flow field for optimized design and improved energy performance [19]. I. Anyanwu et al. investigated the two-phase flow in sinusoidal channel of different geometric configurations for PEMFC and analyzed the effects of key dimensions on the droplet removal in the flow channel [20]. Y. Peng et al. simulated 5-cell stacks with commercialized flow field designs, including Ballard-like straight flow field, Honda-like wavy flow field and Toyota-like 3D mesh flow field, to investigate their thermal management performance [21]. To note, the terms such as sinusoidal, zig-zag, wave-like and Sshaped flow channels in the aforementioned literatures are similar to the so called wavy flow channels in this paper with identical channel height for the entire flow field. The through-plane constructed wavy flow channels with periodically varied channel heights are beyond the scope of this paper [22,23].

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