于描述一个晶体频率特性的参数主要有频率容限（Frequency Tolerance）、频率温度特性（Frequency Temperature Characteristics）和频率电压特性(Frequency Voltage Characteristics)，它们描述晶体振荡频率随外界因素影响而发生的变化，用ppm和ppm/V表示。
Studies the resonator frequencytemperaturecharacteristic, then designs the middle-frequency tracking band pass filter.
研究了谐振子频率的温度特性并设计了频率跟踪带通滤波器。
2
The keys of improving the ATCXO temperaturefrequencycharacteristic are appropriately choosing compensation network and optimization calculation the network parameter.
补偿网络的合理选取和网络参数的优化计算是提高ATCXO产品的温度频率特性的关键。
3
It order to improving the temperaturecharacteristic and aging drift characteristic of frequency marker, one intelligent compensating method and device is disclosed.