Gap waveguide technology is particularly attractive for the design of passive elements in mm-wave systems. Recently, the so-called zero-gap implementation has proved to be very robust to manufacturing tolerances, while at the same time keeping the low loss associated to the contactless standard gap waveguide. In this paper, a Chebyshev filter working at 145 GHz based on this idea and intended to be used in a wireless communication system is designed and optimized. A conventional milling technique has been used in its fabrication, and good measured results have been obtained in a single-pass process.

中文翻译：

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间隙波导技术在D波段带通滤波器的设计与实现

间隙波导技术对于毫米波系统中无源元件的设计特别有吸引力。最近，事实证明，所谓的零间隙实现对制造公差非常稳健，同时又保持了与非接触式标准间隙波导相关的低损耗。本文基于此思想设计并优化了一种在145 GHz频率下工作并打算用于无线通信系统的Chebyshev滤波器。在其制造过程中已使用常规铣削技术，并且在单道次工艺中获得了良好的测量结果。