Parasitic modes in oven magnetron

Martyna Woźniak; Emil Szkop; Michał Rychlewski; Andrzej Różycki; Dariusz Baczewski; Mariusz Błażejewicz; Dariusz Laskowski

doi:10.1117/12.2316774

19 April 2018 Parasitic modes in oven magnetron

Martyna Woźniak, Emil Szkop, Michał Rychlewski, Andrzej Różycki, Dariusz Baczewski, Mariusz Błażejewicz, Dariusz Laskowski

Author Affiliations +

Proceedings Volume 10715, 2017 Radioelectronic Systems Conference; 1071509 (2018) https://doi.org/10.1117/12.2316774
Event: Radioelectronics Systems Conference, 2017, Jachranka, Poland

Abstract

A magnetron as a generation lamp is a groundbreaking invention. Magnetrons can achieve high power in both continuous and impulse mode. In addition, their characteristic feature and at the same time a great advantage is the high efficiency in the decimeter frequency range. Moreover, they have a very good ratio of power generated to mass compared to semiconductor solutions. The purpose of this study was to investigate the stability of the oven magnetron in terms of emission of undesirable signals. The aim of magnetrons of this type is to produce a continuous electromagnetic wave with stable oscillations of 2.45 GHz. During experimental research, additional spurious frequency of 4.3 GHz was observed in some cycles. Such spuria adversely affect the stability of the generated signal and disturb the surroundings. To find out why the signal is generated, the oven magnetron is examined. After that the numerical analysis was performed on this basis. The analysis shows that the magnetron operates in a different mode than the basic mode π. Numerical studies in the form of computer simulations were carried out in the CST program. To do this magnetron geometry was implemented in to the program. For experimental measurements, a commercially available oven magnetron was used. During the tests, the operation of a continuous wave generator with a frequency of 2.45 GHz and operating in the power range of 200-800W.

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Martyna Woźniak, Emil Szkop, Michał Rychlewski, Andrzej Różycki, Dariusz Baczewski, Mariusz Błażejewicz, and Dariusz Laskowski "Parasitic modes in oven magnetron", Proc. SPIE 10715, 2017 Radioelectronic Systems Conference, 1071509 (19 April 2018); https://doi.org/10.1117/12.2316774

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KEYWORDS

Electrons

Microwave radiation

Electromagnetic radiation

Magnetism

3D modeling

Computer simulations

Numerical simulations

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