Abstract

This paper proposes a series of novel super compact dual-band substrate integrated waveguide (SIW) filters and filtering power dividers (FPDs) using two new compact metamaterial unit-cells. The proposed unit-cells, called COCSRRs, consist of a complementary split-ring resonator (CSRR) and an open CSRR (OCSRR). The working principle of the proposed filters and FPDs is based on the evanescent-mode technique.Based on the theory of evanescent mode, an additional passband below the waveguide cut-off can be achieved by etching the electric dipoles on the metal surface of the SIW structure. The CSRR and OCSRR unit-cells, behave as electric dipoles when excited by an axial electric field and are able to generate a forward-wave passband region below the cut-off frequency of the SIW configuration. Therefore, the proposed COCSRR unit-cells can be interpreted in term of electric dipoles, which can generate two forward-wave passbands below the cut-off frequency of the SIW structure. Although, the center frequencies of each passband can be independently controlled by changing the dimensions of the CSRR and OCSRR sections in the proposed COCSRR unit-cells. Accordingly, by loading the proposed COCSRR unit-cells on the waveguide surface, two arbitrary passbands below the waveguide cut-off frequency are achieved for WLANs and WiMAX applications. The designed SIW filters and FPD are fabricated and measured. Good agreement is observed between the simulated and measured results of the proposed filters and FPD. The proposed dual-band filters and FPD have many benefits like compact size, high selectivity, tunable passband frequencies, and easy integration with other planar technologies.

中文翻译：

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基于compact逝模技术的超紧凑型双频带基片集成波导滤波器和滤波功率分配器

摘要

本文提出了一系列使用两个新的紧凑型超材料单元电池的新型超紧凑型双频带衬底集成波导（SIW）滤波器和滤波功率分配器（FPD）。提出的称为COCSRR的单位单元由互补的开环谐振器（CSRR）和开放式CSRR（OCSRR）组成。所提出的滤波器和FPD的工作原理是基于the逝模式技术，基于of逝模式理论，可以通过在SIW的金属表面上蚀刻电偶极子来在波导截止点以下获得额外的通带结构体。CSRR和OCSRR单位晶胞在受到轴向电场激励时表现为电偶极子，并且能够在SIW配置的截止频率以下生成正向通带区域。因此，提出的COCSRR晶胞可以用电偶极子来解释，它可以在SIW结构的截止频率以下生成两个正向通带。尽管可以通过更改建议的COCSRR单元中CSRR和OCSRR部分的尺寸来独立控制每个通带的中心频率。因此，通过将建议的COCSRR单位单元加载到波导表面上，可以在WLAN截止频率和WiMAX应用中获得低于波导截止频率的两个任意通带。设计并测量了设计的SIW滤波器和FPD。在拟议的滤波器和FPD的模拟和测量结果之间观察到良好的一致性。拟议的双频滤波器和FPD具有许多优点，例如尺寸紧凑，选择性高，通带频率可调，