In order to compensate for amplitude inconsistencies of components and circuits, the equalizer has been proposed and introduced. In the previous reports, the theory of equalizer is mainly based on the resonant circuit. In this article, the substrate integrated waveguide (SIW) equalizer fabricated on a ceramic substrate with surface resistance, operating in a millimeter- wave band, is presented first. The key point for SIW equalizer is the introduction of surface resistance instead of the copper layer in a particular location. The working principle of SIW equalizer is discussed in detail. Then, the design method and the procedure are given and demonstrated. A good agreement between the measurement and the simulation indicates its excellent performances. For measurement results, the return losses are better than −18.8 dB for the SIW equalizing values of 2.8, 5.6, and 9 dB over the whole Ka-band. Based on the previous analysis of SIW equalizer, an extensible application in SIW attenuator operating in a millimeter- wave band has been presented first. Measurement results show that the attenuation levels of 5.45 ± 0.15, 10.6 ± 0.4, 21 ± 1, and 30.75 ± 1.45 dB have been achieved in a band of 24.8–38.4 GHz. Besides, the return losses are better than −20 dB in the same frequency band.

中文翻译：

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具有表面电阻的基板集成波导均衡器和衰减器

为了补偿元件和电路的幅度不一致，已经提出并引入了均衡器。在以往的报道中，均衡器的理论主要是基于谐振电路。在本文中，首先介绍了在具有表面电阻的陶瓷衬底上制造的衬底集成波导 (SIW) 均衡器，该器件工作在毫米波波段。SIW 均衡器的关键是在特定位置引入表面电阻而不是铜层。详细讨论了SIW均衡器的工作原理。然后，给出并演示了设计方法和步骤。测量和模拟之间的良好一致性表明其优异的性能。对于测量结果，回波损耗优于-18。对于整个 Ka 频段上 2.8、5.6 和 9 dB 的 SIW 均衡值为 8 dB。基于之前对 SIW 均衡器的分析，首先介绍了工作在毫米波频段的 SIW 衰减器的可扩展应用。测量结果表明，在 24.8-38.4 GHz 频段内已实现 5.45 ± 0.15、10.6 ± 0.4、21 ± 1 和 30.75 ± 1.45 dB 的衰减水平。此外，回波损耗在相同频段内优于-20 dB。