A growing interest in dielectric waveguides (DWGs) as an alternative to commonly used waveguides (like coaxial or twisted-pair cables) for high data rate interconnects could be observed in the last few years. Especially in the mm-wave frequency range (30–300 GHz) applications with these waveguides benefit from low losses and low dispersion. Moreover, using both polarizations of the fundamental mode in such waveguides could theoretically double the data rate without the need of higher bandwidth or additional fibers. The connection between DWGs and commonly available transceiver chips requires broadband transitions from planar waveguides like microstrip lines to DWGs. In this paper, an overview of the current developments of such transitions is given and a novel low-complexity design is presented that reduces the space consumption by 35% related to recently published works. This allows an easy integration into a printed circuit board layout or a chip package. Furthermore, an extensive sensitivity analysis is presented to prove the robustness toward manufacturing tolerances. The transition is realized at W-band frequencies (75–110 GHz) and achieves a relative 10 dB-bandwidth of more than 25% with a minimum insertion loss of 1.2 dB. It is shown that these properties even hold for manufacturing tolerances of nowadays manufacturing processes.

中文翻译：

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用于毫米波应用的从 PCB 到圆形电介质波导的宽带双极化过渡的稳健设计

在过去的几年中，可以观察到介质波导 (DWG) 作为用于高数据速率互连的常用波导（如同轴或双绞线电缆）的替代品的兴趣日益浓厚。特别是在毫米波频率范围（30-300 GHz）应用中，这些波导受益于低损耗和低色散。此外，在这种波导中使用基模的两种极化理论上可以使数据速率翻倍，而无需更高的带宽或额外的光纤。DWG 和常用收发器芯片之间的连接需要从微带线等平面波导到 DWG 的宽带过渡。在本文中，概述了此类过渡的当前发展，并提出了一种新颖的低复杂度设计，该设计将与最近发表的作品相关的空间消耗减少了 35%。这允许轻松集成到印刷电路板布局或芯片封装中。此外，还提出了广泛的敏感性分析，以证明对制造公差的稳健性。过渡在 W 波段频率 (75–110 GHz) 上实现，实现了超过 25% 的相对 10 dB 带宽，最小插入损耗为 1.2 dB。结果表明，这些特性甚至适用于当今制造工艺的制造公差。提出了广泛的敏感性分析，以证明对制造公差的稳健性。过渡在 W 波段频率 (75–110 GHz) 上实现，实现了超过 25% 的相对 10 dB 带宽，最小插入损耗为 1.2 dB。结果表明，这些特性甚至适用于当今制造工艺的制造公差。提出了广泛的敏感性分析，以证明对制造公差的稳健性。过渡在 W 波段频率 (75–110 GHz) 上实现，实现了超过 25% 的相对 10 dB 带宽，最小插入损耗为 1.2 dB。结果表明，这些特性甚至适用于当今制造工艺的制造公差。