Inductive output tube with double-gap output cavity

The invention provides an inductive output tube with a double-gap output cavity. The inductive output tube comprises an input system, the double-gap output cavity and a collector electrode, wherein the input system is provided with an input cavity, and used for performing density modulation on an electron beam by utilizing an outside input microwave; the double-gap output cavity is separated from the input cavity by a front space wall; the electron beam subjected to the density modulation performs energy exchange in the double-gap output cavity; generated high-frequency energy is output outside; and the collector electrode is separated from the double-gap output cavity by a rear space wall, and used for collecting residual electrons after the energy exchange. Compared with an inductive output tube with a single-gap outlet cavity, the inductive output tube adopts the double-gap outlet cavity, so that the power, the gain and the bandwidth of the inductive output tube can be improved to a greater extent, and the inductive output tube can operate more stably and reliably.