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引言磁控管是一种高效率大功率的正交场振荡器,要从它的谐振系统中把产生的微波功率耦合到外负载去,必须装置一能量输出器。磁控管要求的引入电阻很小,约几个欧姆,而外负载通常可近似为终端接等效匹配负载的传输线,则其负载阻抗近似为传输线的特性阻抗,一般为数十至数百欧姆,所以能量输出器实质上是一个阻抗变换器,它把较大的负载阻抗变换为谐振系统要求的较小的引入电阻。
Introduction Magnetron is a high efficiency, high power, orthogonal field oscillator. To couple the generated microwave power from its resonant system to an external load, an energy output device must be installed. The magnetrons require a small introduction resistance of about a few ohms and the external load can generally be approximated as the line terminated by an equivalently matched load, the load impedance of which is approximately the characteristic impedance of the transmission line, typically tens to hundreds of ohms Therefore, the energy output device is essentially an impedance transformer that transforms the larger load impedance into a smaller pull-in resistance required by the resonant system.