K. I. Kisilenko – Post-graduate Student,

Department of Physics and Technology of Optical Communication,

Nizhny Novgorod State Technical University n.a. R.E. Alekseev

E-mail: physics@nntu.nnov.ru

G. S. Malyshev – Post-graduate Student,

Department of Physics and Technology of Optical Communication,

Nizhny Novgorod State Technical University n.a. R.E. Alekseev

E. P. Timofeev – Ph.D. (Eng.), Professor,

Department of Physics and Technology of Optical Communication,

Nizhny Novgorod State Technical University n.a. R.E. Alekseev

We consider the formulation and solution of the self-consistent problem of radiation from a rectangular hole in a perfectly conducting screen. The boundary problem is reduced to two systems of homogeneous Fredholm integral equations of the second kind, which are obtained by expressing the radiation field through an unknown field on the radiation surface and subsequent substitution in the boundary conditions on this surface.

Two designs of aperture antennas are considered. Comparison of the characteristics of the proposed ultra-wideband (UWB) antenna design with the characteristics of the prototype antenna confirmed their improvement in a number of positions. Measurements and calculations have shown that the new UWB horn crest antenna can be used in a wider frequency band, achieving similar characteristics. It has been shown that introduction of a radio-absorbing material into the UWB antenna design allows the frequency range to be expanded by suppressing higher-type waves. The characteristics of the proposed UWB antenna are significantly better in terms of mass-dimensional indicators, as compared with the prototype, it is more technological in manufacturing and does not require expensive tooling.

As the second aperture antenna, a multi-layer slot antenna array of the millimeter range has been considered. The main characteristics of slot antenna array models with dimensions of 16  16, 32  32 have been presented. It has been shown that introduction of protrusions in the supply layer at a distance of a quarter of the wavelength from the point of power dividing does not only fail to improve the main characteristics of the device at high frequencies, but increase unwanted reflections. The increase in the dimension of the antenna array has a negative impact of the protrusions: the reflection coefficient increases. The refusal of these protrusions allowed to significantly simplify the topology of the supply layer and, as a consequence, manufacturing of the device as a whole.

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5. Ermolaev A.I., Timofeev E.P., Khilov V.P. Shirokopolosnaya rupornaya grebnevaya antenna. Voprosy radioelektroniki. Ser. RLT. 2013. Vyp. 1. S. 170–176.
6. Kisilenko K.I., Timofeev E.P. Sverkhshirokopolosnaya rupornaya grebnevaya antenna s chastichnym dielektricheskim zapolneniem. Antenny. 2017. № 7. S. 56–61.
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