张亦弛,何昭,郭晓涛,黄见明,张子龙.可用于混频器表征的非线性矢量网络分析仪[J].仪器仪表学报,2017,38(10):2477-2483
可用于混频器表征的非线性矢量网络分析仪
Novel nonlinear vector network analyzer architecture and test bench for mixer characterization
  
DOI:
中文关键词:  非线性矢量网络分析仪  相位参考  相位谱测量  混频器  非线性
英文关键词:nonlinear vector network analyzer (NVNA)  phase reference  phase spectrum measurement  mixer  nonlinearity
基金项目:国家重点研发计划(2017YFF0206202)、国家自然科学基金 (61701469)项目资助
作者单位
张亦弛 中国计量科学研究院 信息与电子计量科学和测量技术研究所北京100029 
何昭 中国计量科学研究院 信息与电子计量科学和测量技术研究所北京100029 
郭晓涛 中国计量科学研究院 信息与电子计量科学和测量技术研究所北京100029 
黄见明 中国计量科学研究院 信息与电子计量科学和测量技术研究所北京100029 
张子龙 中国计量科学研究院 信息与电子计量科学和测量技术研究所北京100029 
AuthorInstitution
Zhang Yichi National Institute of Metrology, Division of Electronics and Information Technology, Beijing 100029,China 
He Zhao National Institute of Metrology, Division of Electronics and Information Technology, Beijing 100029,China 
Guo Xiaotao National Institute of Metrology, Division of Electronics and Information Technology, Beijing 100029,China 
Huang Jianming National Institute of Metrology, Division of Electronics and Information Technology, Beijing 100029,China 
Zhang Zilong National Institute of Metrology, Division of Electronics and Information Technology, Beijing 100029,China 
摘要点击次数: 1199
全文下载次数: 1989
中文摘要:
      非线性矢量网络分析仪(NVNA)是一种针对射频微波器件非线性行为表征的测量装置,通过引入一个相位参考信号实现复杂被测对象的相位谱测量,目前主要用于功率放大器(PA)的表征和建模研究。提出了一种基于双相位参考结构的NVNA改进方案,并尝试用于混频器的非线性行为表征研究。该方案采用一个“步进式”的多频正弦信号作为“主”相位参考,以实现高频谱分辨率的多频段测量,同时引入第2个低频谱分辨率的“辅助”相位参考提供各测量频段的相位同步。该方案能够显著提高测量装置的信噪比,具备对多频段、“调制+谐波”复杂被测对象的测量表征能力。实验表明,该方案可以提供小于±0.2°相位谱测量稳定度,能够进行混频器在复杂调制状态下的相位和谐波失真特性分析。
英文摘要:
      Nonlinear Vector Network Analyzer (NVNA) is a measurement setup for characterizing the nonlinear behavior of RF/Microwave devices. It uses a phase reference to achieve the phase spectrum measurement of a complex test target, and is mainly used for the power amplifier characterization and modeling at present. This paper presents an improved two phase reference NVNA setup, and investigates its performance for mixer characterization with nonlinear behaviors. This novel NVNA setup uses a “stepped” multisine as the primary phase reference, to achieve multi band measurement on a dense spectral grid, and uses a second “auxiliary” phase reference on a coarse grid to ensure the synchronization between multi band phase measurements. As a result, the signal to noise ratio of the test bench can be largely improved, and a complex test target with multi band and “modulated multi harmonic” components can be characterized. According to the experimental results, the proposed method can guarantee a phase measurement stability of less than ±0.2° fluctuation, and achieve the phase and harmonic distortion analysis of a mixer under complex modulation.
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