Research Projects

The research proposal aims to design and study a spatial harmonic magnetron at/around 100 GHz. The primary study and analysis will be aimed toward resonator design and cold cathode design to have performance enhancement in terms of state-of-the-art frequency (100-200 GHz), power (4-6 kW) and efficiency (4-6 %). In addition, there will be focused efforts to better understand the physics of SHMs (effect of multiple modes in magnetron cavity, secondary electron dominance in beam wave interaction etc.) as they are quite different from conventional magnetrons in operational physics. The execution of the research work will lead to an improved understanding of high-frequency magnetrons, their design, operation, technological gaps, and solutions. Also, it will pave the way for building up the knowledge base for such advanced magnetrons, which have enormous potential applications in mm-wave and sub-THz frequencies. The resonator (anode) will be analyzed using spatial harmonic amplitude theory and admittance matching theory, and secondary emission models like Vaughan's will examine the secondary electron emission. The electron dynamics inside the resonator will be analyzed by drift orbital resonance theory. The experimentations will include (a) cold RF testing, including quality factor measurement, circuit efficiency measurement, resonant spectrum and cold frequency response of the designed spatial harmonic magnetron resonator, (b) characterization of secondary electron emission coefficient of various metals and choosing the most optimum for the design of secondary electron emission (SEE) cold cathode, (c) Integration of SHM resonator (anode) and SEE cold cathode and performing ultra-high vacuum processing of the designed SHM, and (d) SEE cold cathode activation and completely processed test diode of SHM characterized till cold test level.

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