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26 November 2019 Sub-Nyquist sampling method and its application in high-frequency electric-field measurement
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Abstract

A high-frequency signal sampling approach by combining with compressive sensing and random equivalent sampling technology is proposed. The proposed sampling method achieves ∼10 times faster equivalent sampling rate by utilizing three parallel sub-Nyquist low-rate analog-to-digital converters (TPSL-ADC). By the union of the optical electric-field sensor with wide dynamic range and the proposed TPSL-ADC sampling method, a complete high-frequency electric-field signal measurement system has been realized. The high-frequency electric-field signal with an equivalent sampling rate of 1  GS  /  s is captured by utilizing three parallel ADCs with sampling rates of ∼32.3, 31.3, and 30.3  MS  /  s, respectively. The effectiveness of the proposed electric-field sensing and detecting system has been experimentally demonstrated.

© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2019/$28.00 © 2019 SPIE
Hui Ding, Fangxing Lyu, Haicheng Zhao, Xu Niu, and Chunyang Han "Sub-Nyquist sampling method and its application in high-frequency electric-field measurement," Optical Engineering 58(11), 114106 (26 November 2019). https://doi.org/10.1117/1.OE.58.11.114106
Received: 16 July 2019; Accepted: 11 November 2019; Published: 26 November 2019
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