微波辐照对无线电引信的影响与作用机理

Effects and effecting mechanism of microwave irradiation on the radio fuse

选择某型集成电路无线电近炸引信,从勤务处理状态和工作状态两方面,研究了无线电引信的 微波辐照效应,确定了被试无线电引信的微波辐照损伤阈值范围在140～150kW/cm2之间,误炸阈值在100 kW/cm2左右。微波辐照通过前门耦合导致无线电引信的高频振荡管和低频组件产生硬损伤,通过直接作用 于起爆执行电路使处于工作状态的无线电引信出现误炸。

The effects of microwave irradiation on the certain integrate circuit radio fuse from aspects of service and normal working state are studied. The damaged and accidental explosion threshold values for microwave irradiation on the radio fuse under test are determined, which are 140-150 kW/cm2 and 100 kW/cm2 respectively. The effecting mechanism of microwave irradiation is analyzed, which shows that the high-frequency module and low-frequency module of radio fuse can be destroyed by antenna coupling for microwave irradiation. Experiments show that microwave irradiation can lead to false action of electronic modules and result in malfunction of explosion executing-device, that is the ultimate reason of accidental explosion for radio fuse under test.