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The possibility of implementing a reflectarray for operating at two independent frequency bands on two orthogonal polarizations is considered. Simulating results of the rectangular 2-layer unit cell are presented. Reflectarray prototype has been designed and manufactured. Comparison of simulated and measured results is introduced.

The work presents the study of multilayer structure based on flat dielectric wedges which provides linear phase shift for wide-angle beam steering antennas. The results of numerical simulation are given including the radiation patterns of deflecting structure and of the whole antenna system based on it. Also some methods for improving the performance of the examined system were studied. The presented antenna system showed the ability of mechanoelectrical beam steering within the range of ±45° in elevation plane and 360° in azimuthal plane. The directivity deterioration in elevation plane reached 3 dB relative to zero direction.

The results of simulation and experimental study of the Ku-band antenna array element based on Fabry-Perot cavity (FPC) are presented in the article. The FPC is implemented as double-layered subwavelength FSS acting as partially reflecting surface (PRS). The matching element in form of a dielectric pyramid is presented. The reflection coefficient of fabricated prototype is below −10 dB within the operating frequency band. The gain of the prototype exceeds 18.7 dBi within a range of 12–12.7 GHz. The frequency band at −3 dB from maximum gain level is 9%. The presented array element can be used in high efficient arrays for satellite communications and television.

Meander-line polarizer for a half-wave vibrator is presented. Researched antenna was simulated and prototype was manufactured. The comparison of the theoretical and experimental data for investigated antenna (axial ratio) was produced. Influence of polarizer on half-wave vibrator matching characteristics was researched.

In this paper the design of a near-field scanner for antenna measurements is presented. A distinctive feature of the scanner is the absence of probe position sensors. The control circuit is proposed which allows generating the trigger signal for the vector network analyzer during continuous scanning without using information from the probe position sensors. Experimental results demonstrates that the proposed approach allows to perform fast and high quality antenna near-field measurements.

In this paper millimeter-wave reflectarray research, simulation and measurements results are presented. Waveguide elements were used as reflectarray unit cell. Exponential horn was used as illuminator. Low profile reflectarray transforms wavefront like a conventional parabolic reflector. The reflectarray aperture, supporting structure and illuminator were fabricated from aluminum alloy by CNC machine. Measured results show very good agreement with characteristics obtained from the simulations. Manufactured reflectarray provides 50% efficiency in 10% bandwidth.

The paper presents the modeling results of the phase front control structures based on perforated dielectric. One of the structures is a lens antenna with two other being identical structures with a linear phase shift. The beam steering is performed by angular displacement of linear phase shift structures. Presented antenna system provides wide-angle mechanoelectrical beam steering.

The work presents the results of simulation of microstrip reflect arrays. The calculations were made with automated system (CAD system) CST Microwave Studio. The equivalent unit cell waveguide approach was applied to make phase curves calculation for the unit patches. The influence of angular displacement of subarrays of the antenna was considered.