【作者】 何翼景； 李越； 张志军； 冯正和；

【Author】 Yijing He;Yue Li;Zhijun Zhang;Zhenghe Feng;Department of Electronic Engineering,Tsinghua University;

【机构】 清华大学电子工程系；

【摘要】 实现对波导色散和截止频率的调控是十分重要的,因为这些参数决定着波导的工作频率范围和物理尺寸。在本文中,我们提出了由一维周期性金属盲孔阵列构成的基片集成阻抗表面,可以等效为均匀的表面电容,并为此提出了有效的理论框架。我们从理论和实验层面证明了容性基片集成阻抗表面可以降低波导的截止频率,调控传播特性,并同时实现其小型化。此外,加载基片集成阻抗表面的波导也呈现了一些有趣的现象,如慢波效应和局部场增强特性。本文提出的基片集成阻抗表面加载技术为实现各类的小型化波导器件、高灵敏度传感器、宽带可调的近零介电常数超耦合调控等应用开辟了新的可能性。更多还原

【Abstract】 To tailor the dispersion and cutoff frequency of the waveguide is of importance since these parameters determine the operating frequency range and dimensions.Here,we propose the concept of substrate-integrated impedance surface(SIIS) constituted by a 1-D array of blind vias,which is equivalent to be a homogenized surface capacitance,and specifically,we develop a theoretical framework for it.We theoretically and experimentally demonstrate that loading a substrate-integrated waveguide with a capacitive SIIS can effectively reduce its cutoff frequency and tailor the propagation characteristics and enable the miniaturization.In addition,a SIIS-loaded waveguide exhibits other intriguing phenomena,such as the slow-wave property and local field enhancement.This SIIS-loading technique may open new possibilities for miniaturization of various waveguide-based components,high-sensitive sensors,wideband epsilon-near-zero supercoupling control.更多还原