Title:
APPARATUS AND METHOD FOR CALIBRATING COMPLEX FREQUENCY RESPONSE OF SAMPLING OSCILLOSCOPE
Document Type and Number:
WIPO Patent Application WO/2023/284679
Kind Code:
A1
Abstract:
An apparatus and method for calibrating a complex frequency response of a sampling oscilloscope, by means of which the problems of poor calibration precision and high uncertainty of existing apparatuses and methods are solved. The apparatus includes: a waveform generation module (1), which is used for generating an excitation signal; a reference signal generation module (2), which is used for receiving the excitation signal, and generating a reference signal; a calibration signal generation module (3), which is used for receiving the excitation signal, and generating a calibration signal; a non-linear vector network analyzer (4), which is used for firstly receiving the reference signal to perform self-calibration, and then switching a channel to receive the calibration signal and deliver same to a calibrated sampling oscilloscope (7); an error correction module (5), which is used for generating two in-phase orthogonal signals to perform time base jitter and distortion error correction on the calibrated sampling oscilloscope (7); and a clock module (6), which is used for providing a synchronization clock signal to the waveform generation module (1), the non-linear vector network analyzer (4), the error correction module (5) and the calibrated sampling oscilloscope (7). By means of the apparatus, a fast complex frequency response and high-precision measurement and calibration of a sampling oscilloscope can be realized.
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Inventors:
GONG PENGWEI (CN)
LIU SHUANG (CN)
GE JUN (CN)
XIE WEN (CN)
JIANG HE (CN)
CHEN BEI (CN)
MA HONGMEI (CN)
YANG CHUNTAO (CN)
LIU SHUANG (CN)
GE JUN (CN)
XIE WEN (CN)
JIANG HE (CN)
CHEN BEI (CN)
MA HONGMEI (CN)
YANG CHUNTAO (CN)
Application Number:
PCT/CN2022/104925
Publication Date:
January 19, 2023
Filing Date:
July 11, 2022
Export Citation:
Assignee:
BEIJING INST RADIO METROLOGY & MEASUREMENT (CN)
International Classes:
G01R35/00
Foreign References:
| CN113447873A | 2021-09-28 | |||
| CN111913146A | 2020-11-10 | |||
| CN104914393A | 2015-09-16 | |||
| CN102087346A | 2011-06-08 | |||
| CN101701988A | 2010-05-05 | |||
| JP2007093296A | 2007-04-12 |
Other References:
JIANG HE, GONG PENG-WEI; CHEN BEI; XIE WEN; MA HONG-MEI; YANG CHUN-TAO: "esearch on the Calibration Technology for Broad-band Comb Generator", JOURNAL OF ASTRONAUTIC METROLOGY AND MEASUREMENT, vol. 34, no. 1, 1 February 2014 (2014-02-01), pages 1 - 6, XP093023943, ISSN: 1000-7202
XU QINGHUA, LIN MAOLIU, ZHANG YICHI: "Phase response reconstruction of arbitrary frequency grid for equivalent sampling oscilloscope based on NTN calibration", YIQI YIBIAO XUEBAO - CHINESE JOURNAL OF SCIENTIFIC INSTRUMENT, ZHONGGUO YIQI YIBIAO XUEHUI, BEIJING, CN, vol. 32, no. 5, 1 May 2011 (2011-05-01), CN , pages 989 - 995, XP093023947, ISSN: 0254-3087, DOI: 10.19650/j.cnki.cjsi.2011.05.005
XU QINGHUA, LIN MAOLIU, ZHANG YICHI: "Phase response reconstruction of arbitrary frequency grid for equivalent sampling oscilloscope based on NTN calibration", YIQI YIBIAO XUEBAO - CHINESE JOURNAL OF SCIENTIFIC INSTRUMENT, ZHONGGUO YIQI YIBIAO XUEHUI, BEIJING, CN, vol. 32, no. 5, 1 May 2011 (2011-05-01), CN , pages 989 - 995, XP093023947, ISSN: 0254-3087, DOI: 10.19650/j.cnki.cjsi.2011.05.005
Attorney, Agent or Firm:
COHORIZON INTELLECTUAL PROPERTY INC. (CN)
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