Substrate integrated waveguide (SIW) technology [1], [2] is a well established and successful approach for implementing planar microwave filters with very stringent requirements in terms of quality (Q) factor and also with the ability to integrate into a system. Optimized SIW filters can reach a Q factor of 200-800 using low-loss substrates and standard fabrication procedures [3]. Furthermore, packaging and electromagnetic (EM) shielding, power-handling capabilities, and low-cost batch manufacturing are other broadly recognized strengths of this approach. However, SIW filters are still larger than most of their planar counterparts; in addition, advanced topologies are not always easy to accommodate, and filter reconfigurability usually leads to very complex implementation [4]-[6].

中文翻译：

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当紧凑性遇上灵活性：用于设备小型化、设计灵活性、高级滤波响应和可调谐滤波器实施的基本同轴 SIW 滤波器拓扑

基板集成波导 (SIW) 技术 [1]、[2] 是一种成熟且成功的方法，用于实现平面微波滤波器，在质量 (Q) 因子方面具有非常严格的要求，并且能够集成到系统中。使用低损耗基板和标准制造程序，优化的 SIW 滤波器可以达到 200-800 的 Q 因子 [3]。此外，封装和电磁 (EM) 屏蔽、功率处理能力和低成本批量制造是这种方法的其他广泛认可的优势。然而，SIW 滤波器仍然比大多数平面滤波器大；此外，高级拓扑并不总是容易适应，滤波器可重构性通常会导致非常复杂的实现 [4]-[6]。