A new calibration method for mixer delay measurements that requires no calibration mixer
A new calibration method for mixer delay measurements that requires no calibration mixer
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一种无需校准混频器的混频器延迟测量的新校准方法
DOI：
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发表时间：
2011
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通讯作者：
J. Dunsmore
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文献类型：
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作者：
J. Dunsmore
传统上，对混频器和频率转换器进行相位和群延迟响应测量是一个困难且复杂的过程，需要调制信号（和解调）、双音信号（一种特殊形式的调制）或具有参考或再转换混频器以及校准或“黄金”混频器的系统。本文提出了一种在 VNA 上测量混频器相位响应的方法，独立校准输入和输出相位响应，直接使用相位参考计算传输响应，并且可追溯到国家标准。该方法首次消除了测试系统中任何其他混合器、参考或校准的需要。
Making phase and group delay response measurements on mixers and frequency converters has traditionally been a difficult and complicated process, requiring either modulated-signals (and demodulation), two-tone signals (a special form of modulation) or a system with a reference or reconverting mixer and a calibration or “golden” mixer. This paper presents a method to measure the phase response of a mixer on a VNA calibrating the input and output phase response independently, computing the transfer response directly using a phase reference, and is traceable to national standards. This method, for the first time, eliminates the need for any other mixer, reference or calibration, in the test system.