ABSTRACT In this paper, a substrate-integrated waveguide (SIW) bandpass filter using the modified complementary spilt-ring resonators (MCSRRs) and the Z-shaped slot is presented. Based on the combination of MCSRRs and the Z-shaped slot, four layouts with MCSRRs in different directions are designed and their distributions of electromagnetic fields are analyzed in some detail. Simultaneously, the causes of the passband generation and change are explained. By comparing the performance of the four layouts, a bandpass filter with the advantages of compact structure, easy integration, and low insertion loss is designed on the basis of face-to-face layout. An additional transmission zero is obtained by introducing the Z-shaped slot. The selectivity is improved duo to two transmission zeros. The proposed filter allows the electromagnetic wave to be propagated in the passband below the cutoff frequency of the waveguide characteristic. To validate the design, the filter is fabricated and tested, and the tested results are consistent with the simulated results.

中文翻译：

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基于改进型CSRR和Z形槽的基板集成波导带通滤波器

摘要 在本文中，提出了使用改进的互补开口环谐振器 (MCSRR) 和 Z 形槽的基板集成波导 (SIW) 带通滤波器。基于MCSRRs和Z形槽的组合，设计了四种不同方向的MCSRRs布局，并详细分析了它们的电磁场分布。同时解释通带产生和变化的原因。通过比较四种布局的性能，在面对面布局的基础上设计了一种结构紧凑、易于集成、插入损耗低的带通滤波器。通过引入 Z 形槽可以获得额外的传输零。由于两个传输零点，提高了选择性。所提出的滤波器允许电磁波在低于波导特性截止频率的通带中传播。为了验证设计，对滤波器进行了制作和测试，测试结果与模拟结果一致。