S. V. Agasieva1, V. Yu. Leushin2, I. О. Porokhov3, G. A. Gudkov4
1–3 Рeoples’ Friendship University of Russia (Moscow, Russia)
4 Bauman Moscow State Technical University (Moscow, Russia)

The need to ensure the noise immunity of microwave radiothermograph antennas is due to the presence of external interference in the operating frequency ranges and the high cost of shielded rooms for equipment placement. The purpose of this work is to increase the noise immunity of broadband antenna applicators used in microwave radiothermometry.

Design of a broadband slit printed applicator antenna in the form of two-way Archimedean spiral intended for use in a conformal antenna array of a multichannel multi-frequency radiothermograph for brain research, has been presented. Calculations of the distribution of the volumetric density of absorbed power inside the human head simulator and the volumetric radiation pattern of a printed applicator antenna in the form of two-way Archimedean spiral outside the human head simulator have been carried out using electrodynamic computer analysis methods. The possibility of increasing the noise immunity of the applicator antenna due to the use of an absorbing material on the outer surface of the shielding antenna housing has been shown.

The proposed broadband interference-proof antenna applicator is intended for use in the conformal antenna array of a multichannel multi-frequency radiothermograph.

Agasieva S.V., Leushin V.Yu., Porokhov I.О., Gudkov G.A. Broadband interference-protected antenna for radiothermometry. Antennas. 2022. № 6. P. 62–68. DOI: https://doi.org/10.18127/j03209601-202206-05 (in Russian)

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