Design and Simulation of 8-Cavity-Hole Slot Type Magnetron on CST-Particle Studio

Abstract

In wireless communication technologies, three types of modulation have been used in modern radar systems commonly – pulse (as a particular type of amplitude); frequency; and phase modulation respectively. Pulsed magnetrons has been generally used in radar to detect the aircraft, pathway / monitor supersonic missiles, communication satellites system and continuous wave magnetrons used for microwaves oven at home for cooking purposes. Most of the aircraft operating today use solid-state devices in their radars due to their simple construction and high power output. In this different types of magnetron one of hole slot type magnetron are used in commercial as well as military areas. This report presented the study of design and simulation of 8-cavity-hole-slot type magnetron using commercial electromagnetic software PIC (Particle in Cell) solver in CST (Computer Simulation Technology). An 8-type hole slot magnetron model consists cathode part that is surrounded by circular anode section with 8-hole slot resonator. The 3D model of magnetron is build and simulated by using empirical values of structural, electrical and magnetic parameters. The empirical formula is used to calculates these parameters. A magnetron simulation on CST particle studio represents three configurations like as eigen mode, particle tracking and particle in cell. The first mode ensures the mode excitation whereas remaining two modes are required for the desired operation of magnetron. In this paper, magnetron is designed for X band where the impact of electric field w.r.t frequency and time for PIC solver is investigated and found peak at 5.28GHz. Further, shorted straps inside magnetron cavity have been implemented. This improves the field properties of magnetron. Presented investigation can have wide ranges of application in era of radar technologies and commercial field.