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中文摘要：
针对均衡器小型化、高Q值的应用需求,提出并设计了一个工作在Ku波段的双模方形基片集成波导谐振腔均衡器.设计了两个正交的耦合缝隙,在谐振腔中激励起简并模TE201和TE102;使用金属柱微扰其中一个模式,实现独立调节该模式的谐振频率,并且频率调节自由度高;研究了薄膜电阻的加载位置,实现独立调节两个模式的衰减量和Q值;分析了双模谐振腔级联后谐振频率偏移量及可调性,给出了双模谐振腔均衡器的分析和设计方法.相比于传统单模谐振腔均衡器,该结构均衡器保持了原有的工作性能,并减少了一半数量的谐振腔,使得结构更加紧凑.测试结果与仿真结果吻合,最大误差0.4d B.
英文摘要：
A gain equalizer operating on Ku-band based on dual-mode square substrate integrated waveguide（ SIW）resonators are designed according to miniaturization and high Q-factor. Two orthogonal coupling slots are designed to excite degenerate modes（ TE201 and TE102） in a square cavity; two perturbation metal holes in the vertical direction are employed to perturb TE102 mode to tune resonant frequency easily for fitting a target curve. The positions of the film resistors loaded on cavity are investigated to realize attenuations and Q-factor of the dual-mode tuning independent. The frequency offsets and tune of the resonant of the dual-mode cavity after the two resonant cavities cascaded are analyzed. Analysis and design method of the proposed equalizer based on dual-mode resonators are presented. Compared with equalizer based on single mode resonators,the proposed equalizer keeps the original performance,and has smaller size for reducing by half the number cavities. The measured results and simulated results are matched well,and the maximum error is 0. 4d B.
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