Mr. Emil Szkop Profile

Emil Szkop

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Proceedings Article | 27 March 2019 Paper

Verification of the results of numerical simulations of a high power pulsed L-band magnetron in experimental conditions

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

Proceedings Volume 11055, 1105515 (2019) https://doi.org/10.1117/12.2525024

KEYWORDS: L band, Electromagnetism, Microwave radiation, Numerical simulations, Analytical research

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Kubara Lamina is working on the development of a new type of pulsed-power magnetron with megawatts output power operating in the L-band. An important part of the design work are computer simulations of electromagnetic interactions with an electric charge. In order to get the most reliable results, the task was carried out with the help of specialized calculation software from two independent producers - CST Studio Suite and MAGIC Tool Suite. The results obtained with the help of both programs were similar, but there were differences between them resulting from the specific features of the software. The differences concerned the time needed to create an electron spokes in the interaction area between the cathode and anode of the tube as well as the threshold voltage at which the generation of high frequency oscillation began. On the basis of numerical simulations, the optimal geometrical dimensions of individual details were obtained and the magnetron prototype was created. The tube was subjected to laboratory tests under dynamic conditions. To ensure proper input power parameters, a dedicated impulse modulator powered from supercapacitors batteries was constructed. The energy of the electromagnetic wave generated during the dynamic operation of the device was absorbed in the waveguide ended with high power load. The test results obtained under the experimental conditions allowed to verify the structure of the model designed using simulation software. Tests in the available power range of the power supply confirmed very good compatibility of the tube parameters with the results of electromagnetic simulations. An additional advantage of carrying out the simulation was the shortening of the design process, because the first model of the device already worked in accordance with the technical assumptions.

Proceedings Article | 19 April 2018 Paper

Parasitic modes in oven magnetron

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

Proceedings Volume 10715, 1071509 (2018) https://doi.org/10.1117/12.2316774

KEYWORDS: Electrons, Microwave radiation, Electromagnetic radiation, Magnetism, 3D modeling, Computer simulations, Numerical simulations

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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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