Vector Network Analysis Using a One-Path, Frequency-Multiplied Photonic Link |
Dong-Joon Lee1, Jae-Yong Kwon1, Jin-Seob Kang1, John F. Whitaker2 |
1Center for Electromagnetics, Korea Research Institute of Standards and Science 2Center for Ultrafast Optical Science and Department of Electrical Engineering and Computer Science University of Michigan |
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Abstract |
A simplified, practical vector network analyzer (VNA) that uses mature radio-over-fiber technology has been designed and demonstrated. The measurement concept allows the full S-parameters of a microwave device (or antenna) to be obtained while minimizing the detrimental effects of electrical cables, which are replaced with a photonic link. A variety of high-frequency light modulation schemes with frequency sweeping capabilities are presented to realize a one-path (single, forward), frequency-multiplied optical link for VNA applications. Using the photonic one-path link, full two-port S-parameters have been extracted based on five-term error modeling, which has half the error terms compared with the standard duplex configuration. The S-parameters of a microwave filter and antenna measured using frequency-multiplied optical links are found to be in good agreement with those obtained using a conventional VNA. |
Key words:
S-Parameter Measurement, One-Path Two-Port Calibration, Radio-Over-Fiber (RoF) |
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