基于磁控管阳极电流检测的负载状态获取技术

完整的微波系统通常配有定向耦合器以及微波功率计来检测反射功率,并以环行器来隔离反射回来的微波,以保护磁控管不被异常工况所损坏,以及实现更有效的加热控制.小功率磁控管因成本问题通常不会配备昂贵的微波反射检测系统以及环行器,在环行器失效以及未使用环行器的小功率微波系统中,磁控管的极易烧毁.为了解决上述问题,通过研究磁控管的...

Load Characteristic Acquirement Technology Based on Magnetron Anode Current Detection

A conventional microwave system is usually equipped with a directional coupler and a microwave power meter to detect the reflected power, and a circulator to isolate the reflected microwave. So that the magnetron is protected from being damaged by abnormal working conditions and more efficient heating control is achieved. However, low power magnetrons are usually not equipped with expensive microwave reflection detection systems or circulators due to the high cost. In a microwave power source without a circulator, its magnetron is much easier to be burned. In order to solve the above problem, based on the study of the starting mode of a magnetron, the pulse width characteristics of the anode current in starting mode is detected on the frequency conversion board. A detection of the load characteristic is realized, which can efficiently protect the magnetron from damage under abnormal conditions and realize high reliable heating.