Abstract

This study aims to analyze the patch antenna for moisture content measurement of made tea. The patch antenna-based system uses an air gap between the ground plane and an electrically conductive patch. The tea sample is contained in the air gap. The patch antenna design has a resonance frequency of 5 GHz. The resonance frequency and S11 parameters are measured for tea samples in the moisture range of 2–10%. The resonance frequency of the patch antenna was observed to decrease with an increase in the moisture content of tea. However, the return loss of patch antenna was observed to increase with an increase in the moisture content of made tea. Linear model parameters were calculated for the prediction of the moisture content of tea leaves.

摘要

本研究旨在分析用于泡茶水分含量测量的贴片天线。基于贴片天线的系统使用接地平面和导电贴片之间的气隙。茶样包含在气隙中。贴片天线设计的谐振频率为 5 GHz。在 2-10% 的水分范围内测量茶叶样品的共振频率和 S11 参数。观察到贴片天线的共振频率随着茶叶水分含量的增加而降低。然而，观察到贴片天线的回波损耗随着泡茶水分含量的增加而增加。计算线性模型参数以预测茶叶的水分含量。