TY - JOUR
T1 - Approach to spectral measurements of a millimeter-wave-band relativistic magnetron
AU - Maksymov, Ivan S.
AU - Magda, Igor I.
AU - Ustyantsev, Mykhaylo A.
AU - Churyumov, Gennadiy I.
PY - 2010/5
Y1 - 2010/5
N2 - Rigorous 3-D finite-difference time-domain computer simulations are used to investigate the electromagnetic characteristics of the diffraction output of a millimeter (mm)-wave-band relativistic magnetron. In the simulations, the diffraction output is outfitted with a dielectric grating that can be tuned in either reflection or transmission mode at definite operation wavelengths. This grating acts as a tunable filter of high-power oscillations generated by the magnetron and is similar to gratings widely used in optics to control ultrashort power optical pulses. Specifically, computer simulations establish a relation between the generation wavelength of the magnetron and the configuration of the grating, as well as predict that the grating provides the field reduction of up to $-$40 dB. The application of the grating suggests an approach to spectral measurements of mm-wave-band relativistic magnetrons with a measurement accuracy of better than 0.3 mm. The implementation of the approach solves a series of engineering and metrological problems arising during spectral measurements of a variety of high-power vacuum microwave devices.
AB - Rigorous 3-D finite-difference time-domain computer simulations are used to investigate the electromagnetic characteristics of the diffraction output of a millimeter (mm)-wave-band relativistic magnetron. In the simulations, the diffraction output is outfitted with a dielectric grating that can be tuned in either reflection or transmission mode at definite operation wavelengths. This grating acts as a tunable filter of high-power oscillations generated by the magnetron and is similar to gratings widely used in optics to control ultrashort power optical pulses. Specifically, computer simulations establish a relation between the generation wavelength of the magnetron and the configuration of the grating, as well as predict that the grating provides the field reduction of up to $-$40 dB. The application of the grating suggests an approach to spectral measurements of mm-wave-band relativistic magnetrons with a measurement accuracy of better than 0.3 mm. The implementation of the approach solves a series of engineering and metrological problems arising during spectral measurements of a variety of high-power vacuum microwave devices.
KW - Finite-difference time-domain (FDTD) methods
KW - Gratings
KW - Magnetrons
KW - Millimeter (mm)-wave generation
KW - Mm-wave measurements
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U2 - 10.1109/TPS.2010.2044422
DO - 10.1109/TPS.2010.2044422
M3 - Article
AN - SCOPUS:77952236277
SN - 0093-3813
VL - 38
SP - 1086
EP - 1090
JO - IEEE Transactions on Plasma Science
JF - IEEE Transactions on Plasma Science
IS - 5
M1 - 5443754
ER -