自差收发机灵敏度的工程计算

ENGINEERING CALCULATION FOR THE SENSITIVITY OF THE AUTODYNE

本文从LC振荡器的角度,阐明了多普勒无线电引信自差收发机的基本原理。并以振荡器的平衡条件为基础,导出了适用于电子管和晶体管自差收发机的灵敏度计算公式,在公式中不仅考虑了器件的转移特性的非线性问题,而且还考虑了器件的输出特性和输入特性的非线性问题。此外还研究了器件工作状态的划分及其对灵敏度的影响。

Principles of the operation of the autodyne used in Doppler radio proximity fuzes are analyzed with the autodyne as an LC oscillator. Based on the balance conditions of the LC oscillator, a formula for calculating the sensitivity of the autodyne is derived, applicable to electronic tube as well as transistor autodyne devices, tn this formula not only the nonlinearity of transconductance of the devices, but also the nonlinearity of output and input characteristics are taken into account. Besides, the classification of operating state of the devices and their effect on the sensitivity of the autodyne are also studied.