Frequency voltage converter with low additional noise

A technology for voltage converters and additional noise, which is applied in the fields of logic circuit coupling/interface, logic circuit connection/interface layout, etc. using field effect transistors, and can solve the problems of high index requirements and low-noise frequency voltage converters. , to achieve the effects of high measurement accuracy, simple structure and convenient use

Active Publication Date: 2015-02-18
NAT TIME SERVICE CENT CHINESE ACAD OF SCI
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Problems solved by technology

At present, because low-noise frequency-to-voltage converters are rarely used and require high indicators, there are no such products

Method used

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  • Frequency voltage converter with low additional noise
  • Frequency voltage converter with low additional noise
  • Frequency voltage converter with low additional noise

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Embodiment Construction

[0016] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0017] In the frequency-to-voltage converter with low additional noise designed by the present invention, the voltage-controlled oscillator is the core component of the frequency-to-voltage converter, and its noise index directly affects the noise index of the frequency-to-voltage converter, and the voltage-controlled oscillator with low phase noise can be selected ROS-1000C-519+; the amplifier can use ERA-1SM+; the attenuator can use LAT-2; the low-noise frequency divider should have a large-scale frequency division function, and can use MC12080; the coupler can use PDC-10-54 +; phase detector can choose HMC439 QS16G; loop filter can choose commercially available PI controller, or choose THS4031 amplifier to build by yourself; output buffer can choose voltage follower.

[0018] see figure 1 , in order to obtain a lower system noise...

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Abstract

The invention provides a frequency voltage converter with low additional noise. A phase-locked loop technology is used, a conversion relation of frequency voltage is established, a phase of a low-noise voltage-controlled oscillator is locked on measured signals, and a control end of the voltage-controlled oscillator is detected; low-noise frequency-to-voltage conversion of the measured signals with the frequency range greater than 100 kilohertz is realized, and requirements on measurement of ultra-stable laser frequency noise spectra can be met; and the frequency voltage converter can also be used for measuring frequency noise of a narrow-band laser. Compared with a method of measuring the line width of a laser to calibrate the frequency performance of the laser by using an optical fiber delaying method, the method for the frequency voltage converter is accurate. The measuring means for the level of the frequency noise of the ultra-stable laser is high in precision and is scientific. A noise source which affects the frequency stability of the laser is determined directly on the basis of a noise spectrum, so that a laser system is optimized in a targeted manner; the frequency noise of the laser is reduced; by the frequency voltage converter with the low additional noise, ultra-stable laser light and narrow-line-width laser light can be used for the fields of time frequency measurement, basic physical research, deep space detection, space science and the like; and the frequency voltage converter is significant.

Description

technical field [0001] The invention belongs to the technical field of frequency signal detection, and in particular relates to a frequency-voltage converter with low additional noise for ultra-high frequency stability laser frequency noise evaluation. Background technique [0002] Ultra-stable laser (ultra-high frequency stability laser) technology is widely used in cutting-edge scientific fields such as time-frequency measurement, high-precision time-frequency transmission and synchronization, and precise physical measurement. Ultrastable laser technology is the cornerstone of the rapid development of contemporary time frequency, especially optical frequency standards. At present, the frequency stability of the most stable ultra-stable laser can reach 1E-17 / s, the corresponding laser linewidth is less than 1Hz, and the corresponding frequency noise is -10~-20 dB Hz 2 / Hz range. [0003] In order to develop and evaluate ultra-stable lasers, it is necessary to measure the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K19/0185
Inventor 姜海峰闫露露赵文宇张颜艳张首钢
Owner NAT TIME SERVICE CENT CHINESE ACAD OF SCI
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