Multi-pole multi-electron injection radiation source based on cold cathode

• Main Authors: MENG LIN, YAN YANG, WANG RUI, LI HAILONG, YIN YONG, YUAN XUESONG, CHEN QINGYUN, WANG BIN
• Format: Patent
• Language: Chinese; English
• Published: 06.09.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS; ELECTRICITY

The invention belongs to the field of microwave, millimeter wave and terahertz frequency band electric vacuum devices, and particularly provides a multi-pole multi-electron injection radiation sourcebased on a cold cathode. The device mainly comprises a cathode baffle, a radiation source core, a feed system, a metal shell and an output window sheet; the relatively high high-frequency field at themiddle part of a high-frequency structure is fully utilized to act on the surface of the cold cathode through a multi-stage emission and multi-pole modulation mode, so that the emission current is increased and the electron injection modulation depth is deepened, so that the electronic injection has a remarkable pre-modulation effect. According to the method, a very high-quality field emission pre-modulation electron injection can be obtained, the wave-injecting interaction efficiency is obviously improved, and the output power is obviously improved; the complexity of the device is greatly reduced without an optical-o