Calibration device and calibration method for rising time of ultra-wideband waveform analyzer
A waveform analysis and calibration method technology, which is applied in the direction of measuring devices, instruments, and measuring electrical variables, can solve the problem of insufficient rise time of fast-edge step electrical pulse signals, and achieve the effect of improving calibration capabilities
Pending Publication Date: 2022-04-22
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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Problems solved by technology
[0004] The invention provides a calibration device for the rise time of an ultra-wideband waveform analyzer, which is used to solve the problem of insufficient rise time of the standard fast-edge step electric pulse signal generated by the fast-edge step pulse signal generator in the traditional device
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Embodiment 1
[0024] Such as figure 1 As shown: the calibration device for the rise time of the ultra-broadband waveform analyzer includes a continuous laser 1, a phase modulator Ⅰ 2, a phase modulator Ⅱ 3, a programmable optical filter 4, a control machine 5, an optical fiber amplifier 6, and a high-speed photodetector 7. RF amplifier I8, RF amplifier II9, phase shifter 10, power divider 11, frequency synthesizer 12, reference clock 13, trigger signal generator 14; output terminal a of reference clock 13 and clock reference input of trigger signal generator 14 terminal is connected through a radio frequency cable, and the output terminal of the trigger signal generator 14 is connected with the trigger input terminal of the calibrated ultra-wideband waveform analyzer through a radio frequency cable; the output terminal b of the reference clock 13 is connected with the clock reference input terminal of the frequency synthesizer 12 through a radio frequency cable, and the frequency The output...
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The invention discloses a calibration device and a calibration method for the rise time of an ultra-wideband waveform analyzer, and belongs to the field of calibration devices for the rise time. The calibration device comprises a continuous laser, a phase modulator I, a phase modulator II, a programmable optical filter, a control machine, an optical fiber amplifier, a high-speed photoelectric detector, a radio frequency amplifier I, a radio frequency amplifier II, a phase shifter, a power divider, a frequency synthesizer, a reference clock and a trigger signal generator. According to the invention, a comb-shaped optical signal generation processing and high-speed photoelectric detector conversion method is adopted to realize generation of standard fast-edge step electric pulse signals of several picoseconds, so that the problem of calibration of the rising time of the ultra-wideband waveform analyzer is solved, and direct calibration of the rising time of the ultra-wideband waveform analyzer is realized; and the calibration capability of the rising time of the ultra-wideband waveform analyzer is improved.
Description
technical field [0001] The invention belongs to the field of rise time calibration, and more specifically relates to a rise time calibration device and a calibration method of an ultra-wideband waveform analyzer. Background technique [0002] The waveform analyzer is an important instrument for measuring signal waveforms. Its working principle is to convert the measured electrical signal into a digital signal through a high-speed analog-to-digital converter, and then use a specific waveform analysis algorithm to realize the measured measurement and analyze. [0003] Rise time is the most important technical index of an ultra-wideband waveform analyzer, which characterizes the high-speed, wideband signal measurement and analysis capabilities of the waveform analyzer. The traditional method of calibrating the rise time of a waveform analyzer is to use a fast-edge step pulse signal generator to generate a standard fast-edge step electrical pulse signal whose rise time is less ...
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Login to View More IPC IPC(8): G01R35/00
CPCG01R35/005
Inventor 谢文龚鹏伟谌贝姜河刘爽赵珞
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT