固定频率源可以在在通讯系统和雷达系统中作为本机振荡器，也可以作为数字电路的基准时钟信号，因此得到了广泛的应用。
Single frequency source is usually used as local oscillator in communication system and radar system, also as a reference clock in digital circuits, so it is a extensive-applied technique.
石英晶体振荡器是一种非常重要的频率源。
Quartz crystal oscillator is one of the most stability frequency references.
为了提高调频电路和晶体振荡器的频率稳定度，采用温度补偿电路是一种极其有效的方法。
In order to improve the frequency stability of the frequency modulation circuit and the crystal oscillator, using the temperature compensation circuit is extremely effective method.
在这种情况下，晶体振荡器就不能为设备提供稳定的时钟频率，导致设备工作异常。
In this case, the crystal oscillator can not provide a stable clock frequency, which results in the abnormality of the device.
大多数是晶体振荡器，它利用(石英)晶体固有共振的优点，所以频率稳定。
Most are crystal oscillators that take advantage of the inherent resonance of a (quartz) crystal to obtain frequency stability.
芯片内置频率合成器、功率放大器、晶体振荡器和调制器等功能模块。
The transceiver consists of a fully integrated frequency synthesizer, a power amplifier, a crystal oscillator and a modulator.
这类压控晶体振荡器广泛用于无线电通讯和其它电子设备作频率源。
This kind of VCXO cover a wide variety of radio communications and other electric equipments as frequency source.
但是，许多设备工作在温度范围变化较大的环境中，由于石英晶体谐振器自身特殊的物理特性，温度的变化会导致晶体振荡器的频率发生偏移。
However, many devices work in the environment which the temperature changes in a larger range, the change of temperature will cause the crystal oscillator's frequency shift.
要使晶体振荡器的输出信号保持原子标准所固有的频率准确度和稳定度，所用压控晶体振荡器必须具有优良的性能。
The performance of VCXO must be excellent so as to maintain the inherent frequency accuracy and stability of the atomic standard.
要使晶体振荡器的输出信号保持原子标准所固有的频率准确度和稳定度，所用压控晶体振荡器必须具有优良的性能。
The performance of VCXO must be excellent so as to maintain the inherent frequency accuracy and stability of the atomic standard.
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