引言考虑到一部需要在脉冲与脉冲问保持相干,并能灵活选择脉冲特性的发射机,作为一个动目标显示雷达分系统的重要性,对其设计应予很大的注意。这样一种发射机的性能的最合适的衡量尺度就是它的近载频噪声谱密度,而这种谱密度可能受调制器以及放大管设计的影响。雷达设计师必须知道发射机输出中的近载频噪声与输出功率、频率、激励功率、电源纹波等的函数关系。 INTRODUCTION Considering the importance of a transmitter that needs to be pulse-pulse-compatible with respect to pulsing and pulsing, the design of a radar subsystem as a moving target should be given a great deal of attention. The most appropriate measure of the performance of such a transmitter is its near-carrier noise spectral density, which may be affected by the modulator and amplifier design. The radar designer must know the near-carrier frequency noise in the transmitter’s output as a function of output power, frequency, excitation power, supply ripple, and the like.