E. V. Ovchinnikova – Dr.Sc. (Eng.), Associate Professor,
Moscow Aviation Institute (National Research University)
E-mail: oea8888@gmail.com
М. А. Sokov – Post-graduate Student,
Moscow Aviation Institute (National Research University)
E-mail: s.makc.s@mail.ru
S. G. Kondrat’eva – Ph.D. (Eng.), Associate Professor,
Moscow Aviation Institute (National Research University);
RUDN University
E-mail: kondratieff89@ya.ru
A. O. Perfilova – Ph.D. (Eng.), Business Development Director,
Inspider LLC (Moscow)
E-mail: a_perfilova@bk.ru
P. A. Shmachilin – Ph.D. (Eng.), Associate Professor,
Moscow Aviation Institute (National Research University);
RUDN University
Nguen Dinh To – Post-graduate Student,
Moscow Aviation Institute (National Research University)
E-mail: ndt.mai.198@gmail.com
A. Yu. Shcherbachev – Senior Lecturer,
Moscow Aviation Institute (National Research University)
E-mail: zav_lab_406@mail.ru
Rotating joints (RJ) are widely used in ground and airborne antenna feeder devices of radar and telecommunication systems. Currently, in Russia and abroad, work is underway to improve the RJ characteristics: increasing their reliability, reducing losses and weight and size characteristics. Rotating joints are used to transfer power from a stationary generator to a rotating antenna and are available for operation in various ranges. In this case, it is necessary to ensure constant transmission power while rotating the antenna. To do this, the aircraft uses transmission lines, in which various types of waves with axial symmetry of the field in the cross section can exist.
Depending on the purpose of the radio engineering system and the requirements for electrical and general technical characteristics, various options for constructing an aircraft are possible, combining coaxial and waveguide transitions. When designing vias, the focus is on achieving good quality bandwidth matching as well as ensuring the required dielectric strength. The operating range of the aircraft also depends on the purpose of the radio engineering system.
The article presents the results of modeling the coaxial RJ. The obtained values of the SWR and the attenuation coefficient in the working band are significantly lower than those of analogs. VSWR in the required band does not exceed 1,3. The attenuation coefficient in the operating frequency band is -0,32 dB. Preservation of the declared parameters is ensured when the coaxial RJ is rotated over 360°.
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