No 4 (2025)

The article presents a line of powerful GaN microwave transistors of L, S and C frequency ranges with a design support kit developed by «PKK Milandr» JSC, as well as a series of amplifier modules built on the basis of these transistors.

The article provides the study of electrodynamic and electronic parameters of a capacitively loaded double-gap resonator for a multibeam klystron. The resonator’s design features the mushroom-shaped structure and extra rods along the resonator perimeter. Simulation results were obtained with different sizes of the resonator structure elements.

The article discusses the problems of designing ferrite microwave devices using modern CAD systems and the prospects for developing domestic CAD systems for calculating the main parameters of this class of devices.

The article examines the development stages of «Obzor» vector network analyzers model range and «PLANAR» company future plans in the field of designing devices for measuring the parameters of microwave systems.

The article studies the influence of the error in setting the angle of inclination of the X-axis drive of the Contracer CV-3100 contour measuring machine on the measurement results. Practical recommendations for adjusting the verification methodology and optimizing the design of the device have been formulated.

The article considers five different convolutional neural network models which were trained and tested. The input data was a set of satellite images RSI-CB256 of the Earth’s surface.
The results of the study are applicable in such areas as mapping, urban planning, protection of population and territories from emergency situations.

The article proposes the methodology that combines data from multi-aspect modes (bistatic (semi-active) and active) of high-resolution radar frame formation based on a two-position spatially distributed system of small-sized airborne radars.

The article analyzes the engineering solutions that allow increasing the flight time of UAVs, while providing effective and economic methods of recharging.

The article examines various architectures of central processors for accelerating work with artificial neural networks. Examples of domestic computing modules and blocks for machine vision systems, video analytics and optical navigation are presented.

Suzhou HangJing Electronic Technology (HCI) is a leader in piezoelectric crystal technology and specializes in design and mass production of quartz crystal signal generation and frequency control components. The article provides an overview of the main categories and key series of components manufactured by the company.