频率稳定度

调制函数对被动型氢原子频标频率稳定度影响分析

The Influence of Modulation Function to Frequency Stability of Passive Hydrogen Maser

宽范围高稳晶振频率稳定度测试系统的设计

Test System Design of Wide Scope High Steady Crystal Oscillator Frequency Stability

GPS时间比对的长期频率稳定度

The Long Term Frequency Stability in the GPS Time Comparison

被动式稳频CO2激光器频率稳定度的测量

Measurement of Frequency Stability of Passive Frequency Stabilized CO_2 Laser

4.3μm荧光稳频的CO2激光器及其频率稳定度的拍频测量

CO_2 Laser Stabilized by 4.3 μ m Fluoresence and Its Frequency Stability Measurement

GPS卫星原子钟频率稳定度表征方法分析

The Analysis of Frequency Stability 's Presenting Methods for Atomic Clocks of GPS Satellites

因此，提高SAW振荡器的频率稳定度是传感器研究的关键。

Hence , the improvement of SAW frequency stability is the key to SAW gas sensor research .

C波段高频率稳定度宽带FET电压控制振荡器

C Band High Frequency-Stability Broad Band FET Voltage-Controlled Oscillators

采用拍频法测量CO2激光器频率稳定度。

The frequency stability of CW CO 2 laser was measured with beat frequency method .

频率稳定度描述：Allan方差估值的置信度问题

Characterization of Frequency Stability : The Confidence of Estimated Allan Variance

尤其是石英晶体谐振片采用了SC切型进一步提高了短期频率稳定度和加速度灵敏度。

Especially , the use of SC cut quartz crystal further improves the short-term frequency stability and acceleration sensitivity .

提出了谐振稳频振荡器的谐振腔有载Q值同频率稳定度的关系，及提高频率稳定度的方法。

Obtained the quantitative relationship for the frequency stability and the unloaded Q value , and the common approach to improve the quality of oscillator .

DDS是开环系统，无反馈环节，输出响应速度快，频率稳定度高。

DDS is an open-loop system without feedback , its frequency synthesis speed and frequency stability are very high .

对于一个实用的氢频标来说，其频率稳定度的测试，特别是实时稳定度测试，腔体调谐与线Q值的测试都是必不可少的。

For a hydrogen atomic frequency standard . Measurement of it 's stability , especially real-time stability , cavity tuning and line Q must be done .

该方案为实现高性能微型化CPT原子频标克服了一项重要技术阻碍，可望大幅改善微型CPT原子频标的频率稳定度性能。

This technological breakthrough overcomes a main obstacle for realizing high performance miniature CPT atomic frequency standard .

最后，适当调整PID参数，装配恒温晶体振荡器，对结果进行了测试和分析，最终实验结果表明，在应用新型控温电路，并采取单层恒温槽控温的情况下，其频率稳定度可以达到10-8量级。

At last , we test and analyze the results of OCXO . The experiment shows the frequency stability can reach 10-8 based the new temperature control circuit and single oven structure .

本文研制出调频响应达1.3GHz的LD模块，并根据WDM系统传输实验的需要，研制出频率稳定度优于上150MHz的2.4Gb／s光发送机。

The DFB-LD module with 1 . 3 GHz FM responce and 2.4 Gb / s optical transmitter with ± 150 MHz frequency stability are developed .

在国内阿仑方差（AllanVariance）通常用来表征原子频标的频率稳定度。

In our country Allan Variance usually be used to express frequency stability of atomic frequency standard , and Hadamard Variance usually be used to do the same at external .

本文讨论了影响CO2激光频率稳定度的主要因素以及稳定激光频率的一种有效方法，它能使频率的长期稳定度达到10~（-8）。

This paper discusses the factors affecting CO_2 laser frequency stability and an effective method of stabilizing CO_2 laser frequency . By this means the long-term frequency stability can be enhanced up to 10 ~ ( - 8 ) .

在确保所需调制频偏的情况下，通过调整环路反馈系数可减小变容管调制电路对Gunn振荡器中心频率稳定度的影响。

When the modulation sensitivity is enough , the loop feedback coefficent must be decreased for decreasing the influence of varactor diode to the oscillator frequency stability .

本文利用并联谐振的相频特性曲线分析了克拉泼正弦波振荡器实验中的一现象，认为对Q值和频率稳定度的关系应全面理解。

In this paper we analyse some phenomenon in the experiment of the clapp oscillator by means of the phase-frequency curves of the parallel resonance and consider it necessary to look at the relation of the quality factor and frequency stability all sidedly .

为此，在广泛查阅中外文献资料的基础上，对雪崩二极管振荡器的频率稳定度采取了如下措施：利用高Q谐振腔提高频率稳定度；

Therefore , with extensively checking the foundation of the Chinese and Foreign cultural data , we adopt the following measurements to achieve the frequency stability for the IMPATT oscillator . Making use of the high Q resonant cavity to increase the frequency stability ;

本文简述了信号源短期频率稳定度的频畴表征方法，介绍了一个单边带（SSB）相位噪声的自动测试系统。

This paper deals with a method in frequency domain to describe the short - term stabilities of the signal sources , and presents an automatic Test system for SSB phase noise .

本文叙述了用场效应振荡管和砷化镓常γ电调变容二极管及恒温控制电路等构成的C波段高频率稳定度宽带场效应管电压控制振荡器（VCO）的设计和电性能。

Presented in this paper is the design and performance of a C band high frequency-stability broad-band FET voltage-controlled oscillator ( VCO ) consisting of an oscillating FET and a GaAs electrically tunned varactor with constant y as well as a constant temperature-controlled circuit .

4Gb／s高频率稳定度光发送机研制

2.4Gb/s optical Transmitter with High Frequency Stability

介绍一种8毫米（Ka）波段固体微波锁相源，采用数字环路锁相技术，实现了从5MHz到Ka波段频率稳定度的良好传递。

Introduced in this paper is an 8 mm phase-locked solid state oscillator with good frequency stability from 5 MHz to 8 mm using digital loop phase - locking technique .

报道了一种使用介质谐振器稳频的高性能和高稳定的Ka波段全微带GaAsGunn振荡器。在33GHz下，输出功率高达170mW，频率稳定度为9.7ppm/℃。

A dielectric resonator stabilized GaAs Gunn oscillator in full microstrip form with superior performance and high stability is reported , The oscillator provides CW output power of 170 mW and frequency stability of 9.7 ppm / at 33 GHz .

本文介绍悬浮在射频四极陷阱中的~（137）钡正离子的8GHz超精细谐振频率稳定度的测量。

This paper reports the measurement of the frequency stability of the 8 GHz hyperfine resonance of 137Ba + ions suspended in a r.

示位标检测仪作为专属检测仪器，担负着评定应急示位标性能指标的重要任务。本文首先对示位标的短期频率稳定度指标以及EPIRB检测仪的基本结构进行了介绍与分析。

As the testing equipment , EPIRB tester is responsible for the important work to assess the performance of EPIRB . Firstly , the frequency detecting indexes of the beacon are introduced .

实验结果表明，介质谐振器振荡器（DRO）具有频率稳定度高、易调谐、功耗低等优点，可用于移动通信、微波通信、智能天线等系统中。

The experimental results indicate that dielectric-resonator oscillators ( DROs ) are of such advantages as high stability of frequency , easy tuneup and low-energy consumption , which can be used in mobile communications , microwave communications and intelligent antenna , etc.