Optical Communication Technology, Volume. 49, Issue 2, 85(2025)

Software gate control scheme for microwave photonic vector network analyzer

WANG Jiahui... CHEN Xiaoen, CHEN Jianping and WU Guiling |Show fewer author(s)
Author Affiliations
  • State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai 20040, China
  • show less

    To improve the dynamic range of microwave photonic vector network analyzers (MPVNA) during pulse measurements, a software gate control scheme is proposed. This scheme utilizes the temporarily idle receiving channel to receive a pulse square wave that is sourced from the control signal generated by the pulsed excitation, thus generating a gate control signal. By using this gate control signal to control the pulse response of the device under test that has been collected, the signal-to-noise ratio and the measurement's dynamic range are effectively improved. The pulse scattering parameters (S-parameters) of a 10 GHz band-pass filter were measured. Experimental results show that under a 1% duty cycle pulsed excitation, the measurement dynamic range with the software gate control applied has increased by approximately 20 dB compared to when no gate control control was used. The S11 and S22 parameter curves measured after gate control processing are also smoother and more stable due to the improvement in the signal-to-noise ratio.

    Tools

    Get Citation

    Copy Citation Text

    WANG Jiahui, CHEN Xiaoen, CHEN Jianping, WU Guiling. Software gate control scheme for microwave photonic vector network analyzer[J]. Optical Communication Technology, 2025, 49(2): 85

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category:

    Received: Jul. 1, 2024

    Accepted: Apr. 25, 2025

    Published Online: Apr. 25, 2025

    The Author Email:

    DOI:10.13921/j.cnki.issn1002-5561.2025.02.016

    Topics