低相位噪声源的热设计

Thermal Design of Low Phase Noise Source

低相位噪声源是一种频率准确度、稳定度都很高且相位噪声又非常低的频率源。相位噪声是频率稳定度的频域表征,各类军用通信设备、雷达、广播、电视、卫星通信、电子仪器等都要求对相位噪声进行测试分析。在采用这些设备测量低相位噪声时,必须配备低相位噪声信号源,以获得仪器设备精确的相噪底。通过合理的热设计可以有效地降低信号源的噪声底。

Low phase noise source is a kind of frequency source with high frequency accuracy,high stability and low phase noise.Phase noise is the representation of frequency stability in frequency domain.Phase noise test and analysis is required for military communication equipment such as radar,television,satellite communication equipment and electronic instrument.While measuring the low phase noise,low phase noise source is necessary to gain the accurate background noise of the testing equipment.Proper thermal design will effectively reduce the background noise of the source.