A miniaturized dual‐mode sector patch bandpass filter using a single via‐hole is presented in this article. Only a single 11.25° sector patch resonator, which is one‐thirty‐second of the complete circular patch resonator, is utilized to miniaturize the filter for the first time. Without changing the size and construction of the initial patch, a simple via‐hole is used to perturb the patch resonator, thus the novel dominant mode, which provides further compactness is generated. In addition, the change of via‐hole position is utilized to expand the bandwidth and significantly enhance the flexibility of the filter. Moreover, the proposed filter possesses two transmission zeros and it has obvious advantages of low insertion loss, compact size, and wide passband.

中文翻译：

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使用单个通孔的小型化双模扇形带通滤波器

本文介绍了使用单个通孔的小型化双模扇形斑片带通滤波器。首次仅使用单个11.25°扇形面片谐振器（占整个圆形面片谐振器的三分之一）来首次使滤波器小型化。在不改变初始贴片尺寸和结构的情况下，使用一个简单的通孔来扰动贴片谐振器，从而产生了新颖的主导模式，该模式提供了进一步的紧凑性。此外，通孔位置的变化可用于扩展带宽并显着提高滤波器的灵活性。此外，所提出的滤波器具有两个传输零，并且具有明显的优点，即插入损耗低，尺寸紧凑和通带宽。