V.M. Kolomin1, I.V. Filippov2, A.A. Smirnova3, V.N. Rybkin4, N.S. Karasev5, V.A. Iovdalsky6, V.P. Marin7

1–6 JSC NPP “Istok n. a. Shokin” (Fryazino, Russia)
2 Russian Technological University (RTU) MIREA (Moscow, Russia)
1 vmkolomin@istokmw.ru, 2 teh.buro208@gmail.com

The improvement of radar systems and the need to solve problems related to the location of targets at small angles above the horizon in conditions of active interference and reflections from the earth's surface increase the requirements for the transmitter signals quality. Therefore, solid-state microwave generators with dielectric resonators are actively being developed and used in radars. Particular practical interest in this class of devices is due to the realized possibilities of significantly improving the frequency stability of the generated signals and reducing the phase noise level. The use of dielectric resonators in microwave generators as an oscillatory system (passive stabilizing element) allows not only to improve the parameters of the generators, but also to implement some circuits that are difficult to obtain in a waveguide. The authors were tasked with improving the solid-state microwave generator characteristics. In the studied microwave generator, were used Ba-Mg-Ta oxide system (BMT) dielectric resonators with ε~24 and ultrahigh Q-factor Q≥20,000 at F0~10 GHz, and Zr-Ti-Sn-La oxide system (CTO) dielectric resonators with ε~40 and Q-factor Q≥5,000 at F0~7 GHz. The article presents the results of comparing the values of the phase noise level, obtained by calculations and experiments, when using DR from BMT and CTO materials, as well as some aspects of the BMT synthesis technology.

Kolomin V.M., Filippov I.V., Smirnova A.A., Rybkin V.N., Karasev N.S., Iovdalsky V.A., Marin V.P. Improving the characteristics of generators based on dielectric resonators from BMT material. Science Intensive Technologies. 2024. V. 25. № 1. P. 35−41. DOI: https://doi.org/10.18127/ j19998465-202401-04 (in Russian)

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