The horizontal resonance frequency of digital seismic geophone is defined as spurious frequency.
我们把地震检波器的横向共振频率定义为检波器假频。
The geophone spurious frequency is modeled as the resonance of the planer motion of spider spring by carrying moving mass.
检波器的假频是借助支撑运动体对支座弹簧的水平运动作为谐振来模拟的。
In these cases, filters can be added to the switch to modify the signal frequency bandwidth, or spurious signals at unwanted fre quencies can be eliminated from the signal to the DUT.
在这些情况下，可向开关加入滤波器来改变信号的频率带宽，或者从发射到DUT的信号中消除有害频率的杂散信号。
The paper introduced the working principle of the direct digital frequency synthesizer (DDS) and its spurious analysis is performed.
文章介绍了直接数字频率合成器(DDS)的基本工作原理，同时对其杂散进行了分析。
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。
At first, this paper described the basic structure, working principle, sources of spurious signals and characteristics of output spectrum, of direct digital frequency synthesizer (DDS).
首先分析直接数字频率合成器(DDS)的基本结构、工作原理、杂散来源、输出频谱特性。
The paper presents a fast agile frequency synthesizer of low spurious, low phase noise.
系统地介绍了一种低杂散、低相位噪声、快速捷变频频率合成器的实现途径。
It has great advantages of frequency stability, high frequency resolution, speed of frequency switching, simple analysis of phase noise and spurious, small size and low power.
其具有频率稳定度好、频率分辨率高、频率切换速度快、相位噪声和杂散干扰分析相对简单、体积小、功耗低等优势。
The main merits of DDS are high resolution and fast frequency switching speed, but the defects of low output frequency and bad spurious performance restrict the application of DDS.
DDS的主要优点是其高分辨率和高捷变速度，但是其较低的输出频率和较差的杂散性能制约了其应用。
An approach of a low spurious, low phase noise, agile frequency synthesizer was presented.
研究一种跳频通信机低杂散、低相噪快速捷变频率合成器的实现途径。
AD1896 (Analog Devices) - selected for its low spurious tones, low distortion, and exceptionally low PLL corner frequency.
AD 1896-(类比装置)为它的低点膺造的明暗，低的扭曲和例外地低的PLL角落频率选择。
A fast agile frequency synthesis source of low spurious and low phase noise is presented in the article.
文中介绍一种低杂散、低相噪、快速捷变频频综源的实现途径。
The hardware constitution of a low phase noise frequency synthesizer using AD9854 and the measured performances of system phase noise and spurious spectrum are presented.
给出了采用AD985 4芯片构成的低相噪频率综合源的硬件组成以及系统实测的相位噪声、杂散技术指标。
A method to realize a wide frequency-coverage frequency synthesizer with low spurious level and low phase noise level is proposed in this paper.
提出了一种实现宽覆盖、低相位噪声、低杂散的频率合成方法。
The bandpass filter that has spurious suppression characteristics can solve this problem and it has excellent bandpass symmetry and stopband attenuation characteristics at high frequency.
具有杂波抑制特性的带通滤波器不仅可以实现这个功能，同时由于抑制了杂波还可以提高带通滤波器的通带对称性以及高端阻带的衰减特性。
With the development of modern electronic technology, frequency synthesizers are required to have wider band, higher resolution, short frequency switching time and lower spurious level.
随着现在电子技术的进步，系统对频率合成器的精度、频率分辨率、转换时间和频谱纯度等指标提出了越来越高的要求。
With the development of modern electronic technology, frequency synthesizers are required to have wider band, higher resolution, short frequency switching time and lower spurious level.
随着现在电子技术的进步，系统对频率合成器的精度、频率分辨率、转换时间和频谱纯度等指标提出了越来越高的要求。
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