宽带接地共面波导的时域测量方法研究

doi:10.3969/j.issn.1000-1158.2023.11.14

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Abstract The broadband grounded coplanar waveguide (GCPW) is the core component for calibrating oscilloscope broadband probes. To accurately measure the bandwidth of the oscilloscope probe, obtaining the transmission characteristics of the broadband GCPW becomes the key to achieving high-precision calibration. A GCPW time-domain twice measurement system is constructed based on femtosecond laser excitation picosecond electric pulse technology in the measuring principle of time-domain automatic network analyzer(TDANA). This involves taking two measurements in the system to solve the impulse response of the broadband GCPW(twice measurement method), thereby the frequency domain bandwidth can be obtained. The GCPW is designed with a post-wall structure (vias placed along the signal trace), and the processed sample is measured by the twice measurement method. In this way, the 3dB bandwidth of our sample reaches 54.2GHz, which greatly agrees with the simulation result. The calibrated broadband GCPW can be used as a standard device for calibrating broadband probes, and its measured results can be effectively traced to the national benchmark for pulse waveform parameters.

Key words： metrology time domain measurement broadband grounded coplanar waveguide sampling oscilloscope oscilloscope broadband probe frequency response

Received: 14 July 2022 Published: 17 November 2023

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TB973

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	Articles by authors
	ZHU Jiang-miao
	WAN Zhao-tong
	ZHAO Ke-jia
	WANG Peng-fei
	ZHANG Meng-meng

Cite this article:

ZHU Jiang-miao,WAN Zhao-tong,ZHAO Ke-jia, et al. Research on Time Domain Measurement Method of Broadband Grounded Coplanar Waveguides[J]. Acta Metrologica Sinica, 2023, 44(11): 1728-1734.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2023.11.14 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2023/V44/I11/1728

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