双端口网络分析仪测量中的总微分误差
Total Differential Errors in Two-Port Network Analyser Measurements
摘要：
由于没有不确定性的S参数测量不能声称任何可信度，在全双端口矢量网络分析仪（VNA）测量的不确定性估计使用总复微分（总微分误差）。为了精确地表达复微分误差之间的比较关系，使用了它们的微分误差区域（DER）。为了证明该方法在最准确的情况下，直接零长度通过，实际结果是常用的Z参数的一个简单的，两个端口，直流电阻T-网络，这是建立和测试对频率与VNA测量系统扩展了两个漫长的传输线。
英文摘要：
Since S-parameter measurements without uncertainty cannot claim any credibility, the uncertainties in full two-port Vector Network Analyser (VNA) measurements were estimated using total complex differentials (Total Differential Errors). To express precisely a comparison relation between complex differential errors, their differential error regions (DERs) were used. To demonstrate the method in the most accurate case of a direct zero-length thru, practical results are presented for commonly used Z-parameters of a simple, two-port, DC resistive T-network, which was built and tested against frequency with a VNA measurement system extended by two lengthy transmission lines.
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