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A Frequency-to-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 high measurement accuracy, simple structure, and reduce frequency noise

Active Publication Date: 2018-06-08
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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  • A Frequency-to-Voltage Converter with Low Additional Noise
  • A Frequency-to-Voltage Converter with Low Additional Noise
  • A Frequency-to-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 HMC439QS16G; 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

A frequency-to-voltage converter with low additional noise. The invention adopts phase-locked loop technology to establish the conversion relationship of frequency and voltage, lock the phase of the low-noise voltage-controlled oscillator to the measured signal, and then detect the control of the voltage-controlled oscillator. It realizes low-noise frequency-to-voltage conversion with the frequency range of the measured signal greater than 100 kHz, which can meet the measurement requirements of ultra-stable laser frequency noise spectrum; it can also be used to measure the frequency noise of general narrow-band lasers, which is better than measuring laser line by fiber delay method. The method of wide calibration laser frequency performance is more accurate, and the present invention provides a higher-precision and more scientific measurement method for the frequency noise level of ultra-stable lasers, and directly determines the noise source that affects the laser frequency stability based on the noise spectrum, so as to be targeted Optimizing the laser system and reducing the frequency noise of the laser is of great significance in the application of ultra-stable lasers and narrow linewidth lasers in time-frequency measurement, basic physics research, deep space exploration, space science and many other fields.

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 Patents(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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