ABSTRACT In this paper, two compact microwave components, including a Wilkinson power divider and a 3-dB branch-line coupler based on artificial transmission lines (ATLs) with H-type defected ground structure are presented. To achieve compact size, microstrip parallel-plate capacitors and meandered-line inductors are loaded for the ATL. Meanwhile, the H-type defected ground is used to suppress harmonics. In design of the microwave components, ATLs with 70.7 Ω, 50 Ω and 35.4 Ω are utilized. The proposed power divider and branch-line coupler operating at 0.9 GHz occupies merely 33.2% and 33.4% area of the conventional cases, respectively, and have good harmonic suppressions.

中文翻译：

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基于H型缺陷接地结构人工传输线的紧凑型微波器件

摘要 在本文中，提出了两个紧凑的微波组件，包括一个威尔金森功率分配器和一个基于人工传输线 (ATL) 的 3-dB 支线耦合器，具有 H 型缺陷接地结构。为了实现紧凑的尺寸，ATL 加载了微带平行板电容器和曲折线电感器。同时，H型缺陷地用于抑制谐波。在微波元件的设计中，使用了 70.7 Ω、50 Ω 和 35.4 Ω 的 ATL。所提出的工作在 0.9 GHz 的功率分配器和支线耦合器分别仅占据传统案例的 33.2% 和 33.4% 的面积，并且具有良好的谐波抑制。