Hsu Chung-I G, Hong Wanchu, Chen Mingchih, Tu Wei-Chun, Su Gwan-Wei, Ho Min-Hua
Department of Electrical Engineering, College of Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan.
Department of Electronic Engineering, College of Engineering, National Changhua University of Education, Chunghua 50007, Taiwan.
Micromachines (Basel). 2023 Jan 30;14(2):347. doi: 10.3390/mi14020347.
We propose a miniaturized quad-band filter (QBF), designed using substrate-integrated coaxial cavities (SICCs). The employed SICC structure consists of two vertically stacked substrates with a large circular patch embedded in between. The embedded patch is segmented unevenly into four pieces, which are shorted to the cavity's bottom wall through one or two blind vias. This SICC structure exhibits four independently controlled resonances with frequencies much lower than the frequency of its conventional SIW cavity counterpart, thus achieving size reduction. A sample quad-band filter is designed and fabricated for experimental measurement. Reasonably good agreement between measured and simulated data is observed.
我们提出了一种采用基片集成同轴腔（SICC）设计的小型化四频段滤波器（QBF）。所采用的SICC结构由两个垂直堆叠的基板组成，中间嵌入一个大的圆形贴片。嵌入的贴片被不均匀地分割成四部分，通过一个或两个盲孔与腔体的底壁短路。这种SICC结构呈现出四个独立控制的谐振，其频率远低于传统的基片集成波导（SIW）腔体的频率，从而实现了尺寸减小。设计并制作了一个四频段滤波器样品用于实验测量。测量数据与模拟数据之间观察到了合理的良好一致性。
