An equivalent circuit approach for the analysis of cold circuit parameters such as dispersion and interaction impedance characteristics was used for the design of staggered double slot square-shaped coupled-cavity slow wave structure at millimeter waveband and the results were validated against numerical analysis at Ka-band and W -band. The derived lumped parameters of the square-shaped coupled-cavity slow wave structure (CC-SWS) is different from the reported cylindrical CC-SWS. A typical structure was fabricated at Ka-band and cold test measurement was carried and the results were compared against the proposed equivalent circuit approach. The comparison of results shows that the equivalent circuit is simple but accurate to predict within 3% and 10% accuracy against numerical simulation and cold test measurement for dispersion and interaction impedance characteristics, respectively.

中文翻译：

---

毫米波行波管耦合腔慢波结构的冷路分析


采用等效电路方法分析色散和相互作用阻抗特性等冷路参数，设计了毫米波段交错双缝方形耦合腔慢波结构，并通过 Ka- 数值分析验证了结果。波段和W波段。方形耦合腔慢波结构 (CC-SWS) 的集总参数与报道的圆柱形 CC-SWS 不同。在 Ka 波段制造了一个典型结构，并进行了冷测试测量，并将结果与​​所提出的等效电路方法进行了比较。结果比较表明，等效电路简单，但相对于色散和相互作用阻抗特性的数值模拟和冷试验测量，预测精度分别在3%和10%以内。