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Abstract：
In this study, a two-port network-based microwave sensor for liquid characterization is presented. The suggested sensor is built as a miniature microwave resonator using the third iteration of Hilbert\'s fractal architecture. The suggested structure is used with the T-resonator to raise the sensor quality factor. The suggested sensor is printed on a FR4 substrate and has a footprint of 40×60×1.6mm3. Analytically, a theoretical investigation is made to clarify how the suggested sensor might function. The suggested sensor is created and put to the test in an experiment. Later, two pans to contain the urine Sample Under Test (SUT) are printed on the sensor. Before loading the SUT, it is discovered that the suggested structure\'s frequency resonance is 0.46 GHz. An 18 MHz frequency shift is added to the initial resonance after the pans are printed. They monitor the S-parameters in terms of S12 regarding the change in water content in the urine samples, allowing for the sensing component to be completed. As a result, 10 different samples with varying urine percentages are added to the suggested sensor to evaluate its ability to detect the presence of urine. Finally, it is discovered that the suggested process\' measurements and corresponding simulated outcomes agreed quite well.
摘要：
在这项研究中,提出了一种基于双端口网络的液体表征微波传感器。使用希尔伯特分形结构的第三次迭代，将建议的传感器构建为微型微波谐振器。建议的结构与T谐振器一起使用以提高传感器的品质因数。建议的传感器印刷在FR4基板上，占地面积为40×60×1.6mm3。分析,进行了理论研究，以阐明建议的传感器可能如何工作。创建建议的传感器并在实验中进行测试。稍后，在传感器上印有包含待测尿液样本(SUT)的两个平底锅。在加载SUT之前，发现建议结构的频率谐振为0.46GHz。在印刷平底锅之后，将18MHz的频率偏移添加到初始共振。他们根据S12监测尿液样本中水分含量的变化的S参数，允许完成传感组件。因此,将具有不同尿液百分比的10个不同样品添加到建议的传感器以评估其检测尿液存在的能力。最后,发现建议的过程测量和相应的模拟结果非常吻合。
