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首页> 外文会议>IEEE MTT-S International Microwave Symposium >Phase calibration for coherent multi-harmonic modulated signal measurements using nonlinear vector network analyzer
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Phase calibration for coherent multi-harmonic modulated signal measurements using nonlinear vector network analyzer

机译：使用非线性矢量网络分析仪进行相干多谐波调制信号测量的相位校准

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摘要

This paper proposes a novel phase calibration approach to enable multi-harmonic modulated signal measurements using existing nonlinear network analyzer (NVNA) receivers configured in wideband mode. The envelopes around the harmonics are captured sequentially so that the dynamic range (DR) of the measurement system is not compromised. A reference signal generated by a comb generator is used to ensure phase coherency between the harmonics, precluding the need to use a small frequency grid that typical solutions require. To validate its ability to make accurate measurements of multi-harmonic modulated signals, the proposed NVNA-based method is tested against a state-of-the-art oscilloscope. The proposed approach is applied first to an 8-tone signal that covers 14 MHz, then on a 5 MHz 1C-WCDMA signal. Both signals have three harmonics with the fundamental frequency at 1 GHz. The phase accuracy of the measured signal is within ±1.5° and ±10° for the first and second test signals, respectively.
机译：本文提出了一种新颖的相位校准方法，该方法可使用配置为宽带模式的现有非线性网络分析仪（NVNA）接收器实现多谐波调制信号的测量。谐波周围的包络被顺序捕获，因此不会损害测量系统的动态范围（DR）。由梳状发生器产生的参考信号可用于确保谐波之间的相位相干性，而无需使用典型解决方案所需的小频率网格。为了验证其对多谐波调制信号进行准确测量的能力，已针对最新示波器对基于NVNA的建议方法进行了测试。建议的方法首先应用于覆盖14 MHz的8音信号，然后应用于5 MHz的1C-WCDMA信号。两个信号都具有三个谐波，其基频为1 GHz。对于第一和第二测试信号，被测信号的相位精度分别在±1.5°和±10°之内。

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