Using the high degree diffracted waves twice, we have obtained lower noise phase difference amplification of over 100 times.
两次利用其高阶衍射可获得大于100倍的低噪声位相差放大。
In this scheme, the synthesizer contains a low-noise phase detector to achieve the performance of low phase noise and low spur level.
本方案采用了低底噪鉴相器，实现低相噪和低杂散指标。
Therefore , the subject is to study the design theory and engineering realization of the low phase-noise phase locked source in microwave band.
在这样的背景下，本课题对低相位噪声微波锁相源的设计理论和工程实践进行了研究。
The ratio of signal to noise (S/N) is greatly improved through the phase sensitivity detection.
通过相位灵敏度检测，大大提高了信噪比。
In addition to high power, the amplifiers also provide improved performance due to very low phase noise and spurious.
除了大功率，由于低相噪和低杂散，该放大器也提供改进的性能。
The second section introduces some basic knowledge about the TV tuner and its phase noise.
第二部分介绍了一些有关的电视调谐器，其相位噪声的基本知识。
The paper introduce the concepts of timing parameters, including: jitter, phase noise, skew, frequency stabilization, and the relationship between them.
本文介绍了时钟网络中抖动、相位噪声、偏移、频率稳定度等参数的概念以及它们之间的转换关系。
A design method for low phase noise agile X-band frequency synthesizer is presented, the theoretic analysis and calculation is performed and the test results are given.
介绍一种低相噪、捷变频x波段频率综合器设计方法，并进行理论分析、计算，最后给出测试结果。
The random binary phase code phasing PD fuze is a novel modulated system of noise.
随机二相码调相PD（脉冲多普勒）引信，是一种较为新颖的噪声调制引信体制。
Due to the frequency pulling of FLL, the passband of the filter in PLL can be made very narrow to suppress the noise, and the PLL can lock carrier's phase with high accuracy.
由于有锁频环的频率牵引，锁相环路滤波器可以设计得很窄，具有很好的抑噪性能，满足精确跟踪载波相位的要求。
A novel method of phase difference estimation under Gaussian noise is proposed to improve the precision of Coriolis mass flowmeter.
为提高其精度，提出了一种高斯噪声背景下的科氏质量流量计相位差估计新方法。
Experiments show that this algorithm not only can overcome the limitations of phase congruency, but also can improve the location accuracy and anti-noise ability.
实验证明，该算法不但能克服相位一致性的局限性，还提高了特征的定位精度和抗噪性能。
In this thesis, we brought out an effective method capable of raising maximum oscillation frequency with good phase noise.
在本论文中，我们提出了一个有效的方式把振荡频率提高且有不错的杂讯表现。
The method can realize time variant merging automatically, result in simultaneous corrections both for phase and amplitude and avoid the influence of noise.
此方法可自动实现时变拼接，达到相位和振幅同时校正，而且能避免噪声的影响。
相位噪声的研究。
But OFDM is very sensitive to frequency offset and phase noise, so synchronization is the key problem for OFDM system.
但是OFDM技术对频率偏移和相位噪声很敏感，所以同步是OFDM系统中的关键问题。
The comparison method in phase noise measurement system is introduced by means of the advanced way in interlaboratory comparison and proficiency testing.
通过采用国际上先进的实验室比对和能力验证方法，提出了相位噪声测试系统的比对方案。
Low noise fixture and phase average technique provide the amplitude and spurious resonance in frequency domain.
在频率域内，低噪声定位装置和相位平均技术可以提供振幅和假频谐振。
The RF pulse-to-pulse phase noise through microwave test circuit becomes a VF pulse signal of random fluctuation.
射频脉间相位噪声经过微波检测电路、视频电路后变成随机起伏的视频脉冲信号。
In this paper, influence of SAW linear FM signal phase noise on radar transmitter is analyzed.
本文研究了SA W线性调频信号的相位噪声对雷达发射机性能的影响。
Direct Digital Synthesizer (DDS) has the advantages of high frequency resolution, rapid frequency change rate and low phase noise.
直接数字频率合成器dds具有极高的分辨率、频率转换速度快、相位噪声低等优点。
This paper describes some methods, steps and attentions using a spectrum analyzer in phase noise measurement.
本文叙述了用频谱分析仪测量相位噪声的方法，步骤和应注意的问题。
Low SSB phase noise and high spurious rejection for all in-channel and blocking measurements.
低单边带相位噪声和杂散抑制高所有的通道和阻止测量。
In modern radar and communication system, phase noise of local oscillator (lo) becomes a vital factor of system performance.
在现代雷达和通讯系统中，本振相位噪声越来越成为决定系统性能的关键因素。
The results show that digital modulation is with high resolution, total digitalization programmable, and low phase noise etc.
结果表明，数字调制具有分辨率高、全数字化可编程、相位噪声低等特点。
Furthermore, the working principle and phase noise of frequency-locked loop are analyzed and discussed in this paper.
给出了实验结果，并对锁频环的工作原理、相位噪声进行了分析和讨论。
The phase noise is usually specified, depending on the carrier offset, as a single-sideband phase noise referenced to the carrier offset.
相位噪声总是具体的，取决于载波偏移，作为相对于载波偏移的一个单边带噪声。
The factors that influence the phase noise and tuning bandwidth are also discussed here.
文中对影响调频带宽、相位噪声的因素进行了分析讨论。
A new phase noise estimate method for millimeter wave double PLL frequency synthesizer is presented.
提出了一种新的毫米波双环锁相源相位噪声估测方法。
A new phase noise estimate method for millimeter wave double PLL frequency synthesizer is presented.
提出了一种新的毫米波双环锁相源相位噪声估测方法。
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