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发明公开
CN109444547A 基于二端口网络的RFID芯片阻抗测量方法及装置 有权 转让

基于二端口网络的RFID芯片阻抗测量方法及装置
摘要：
本发明公开了一种基于二端口网络的RFID芯片阻抗测量方法及装置，RFID芯片阻抗测量方法包括如下步骤：制作二端口微带线电路板，其中，二端口微带线电路板包括直通微带线电路板以及与直通微带线电路板等长度的带被测物的微带线电路板；校准矢量网络分析仪；测试直通微带线电路板的S参数；测试带被测物的微带线电路板的S参数；基于直通微带线电路板的S参数得到针对直通微带线电路板的第一传输矩阵；基于带被测物的微带线电路板的S参数得到针对带被测物的微带线电路板的第二传输矩阵；基于第一传输矩阵以及第二传输矩阵，计算T矩阵；以及基于T矩阵，计算RFID芯片阻抗。本发明的RFID芯片阻抗测量方法的测量结果更精准，且算法相对简单。
摘要（英）：

The invention discloses an RFID chip impedance measurement method and device based on a two-port network. The RFID chip impedance measurement method comprises the following steps of making a two-portmicrostrip line circuit board, wherein the two-port microstrip line circuit board includes a straight through microstrip line circuit board and a microstrip line circuit board with a tested object having the same length with the straight through microstrip line circuit board; calibrating a vector network analyzer; testing the S parameter of the straight through microstrip line circuit board; testing the S parameter of the microstrip line circuit board with the tested object; acquiring a first transmission matrix aiming at the straight through microstrip line circuit board based on the S parameter of the straight through microstrip line circuit board; acquiring a second transmission matrix aiming at the microstrip line circuit board with the tested object based on the S parameter of the microstrip line circuit board with the tested object; based on the first transmission matrix and the second transmission matrix, calculating a T matrix; and based on the T matrix, calculating an RFID chip impedance. By using the RFID chip impedance measurement method, a measurement result is accurate and an algorithm is simple.

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