1. Dense Spectral Grid NVNA Phase Measurements Using Vector Signal Generators.
- Author
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Zhang, Yichi, He, Zhao, Li, Hang, and Nie, Meining
- Subjects
- *
RADIO frequency , *ARBITRARY waveform generators , *ELECTRIC network analyzers , *AMPLITUDE modulation , *SIGNAL generators - Abstract
This paper proposes a practical approach for dense-spectral-grid phase measurements based on a nonlinear vector network analyzer (NVNA). With the multitone outputs of commercial VSGs as both phase references and standards, a modified NVNA is presented to effectively obtain the phase spectra of modulated RF signals with spectral resolution of 1–100 kHz. Due to the limited tone number of a VSG multitone standard, a multistep phase calibration method is also proposed in this paper for multiplying the calibratable tone numbers in practice. A phase accuracy of ±2° has been experimentally achieved with both the VSG-based approach and the multistep phase calibration method at 2.4 GHz on a 1–100-kHz spectral grid. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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