Method of high timing resolution pulse synthesis based on virtual sampling

• Autorzy: Liu Hanglin , Fu Zaiming , Kong Dexuan , Wang Houjun , Xiao Yingdong

Identyfikatory

DOI

10.24425/mms.2022.140034

• Języki publikacji: EN

Abstrakty

EN

Adjustable-width pulse signals are widely used in systems such as test equipment for hold time, response time and radar testing. In this study, we proposed a pulse generation method based on virtual sampling with ultra-high pulse width resolution. In the proposed method, the sampling rate of a digital-to-analogue converter (DAC) was adjusted to considerably improve pulse width resolution. First, the sampling rate was matched with the target pulse width resolution to digitally sample the ideal signal and generate digital waveform sampling points. Next, the signal bandwidth of the DAC was matched using a low-pass digital filter. Finally, the waveform sampling points were downsampled using an integer factor and output after digital-to-analogue conversion. The waveform pulse width information generated by high-frequency digital sampling was passed step by step and retained in the final output analogue signal. A DAC with a sampling rate of 1.25 GSa/s was used, and the pulse width resolution of the pulse signal was 0.1 ns. Theoretically, a sampling rate of 10 GSa/s is required to achieve 0.1 ns resolution. This method is simple, has a low cost, and exhibits excellent performance.

Słowa kluczowe

EN

pulse synthesis; high resolution; virtual sampling; digital-to-analogue conversion; downsampling

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2022
• Tom: Vol. 29, nr 2
• Strony: 373--389
• Opis fizyczny: Bibliogr. 34 poz., rys., tab., wykr., wzory

Twórcy

autor

Liu Hanglin

• University of Electronic Science and Technology of China, School of Automation Engineering, Chengdu 611731, China

autor

Fu Zaiming

• University of Electronic Science and Technology of China, School of Automation Engineering, Chengdu 611731, China

autor

Kong Dexuan

• University of Electronic Science and Technology of China, School of Automation Engineering, Chengdu 611731, China

autor

Wang Houjun

• University of Electronic Science and Technology of China, School of Automation Engineering, Chengdu 611731, China

autor

Xiao Yingdong

• University of Electronic Science and Technology of China, School of Automation Engineering, Chengdu 611731, China

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Uwagi

1. This study was supported in part by the National Natural Science Foundation of China under Grant 61871089, in part by the Guangxi Key Laboratory of Automatic Detection Technology and Instrument Foundation under Grant YQ201202, and in part by the Sichuan Science and Technology Department under Grant 2020JDRC0005.

2. Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).