Numerical simulation of characteristics of propagation of symmetric waves in microwave circular shielded waveguide with a radially inhomogeneous dielectric filling

Islamov, I. J.; Hunbataliyev, E. Z.; Zulfugarli, A. E.

doi:10.1017/s1759078721001082

Cited by 13 publications

(7 citation statements)

References 23 publications

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“…and equal to 16.1 dB. In accordance with [19][20][21][22][23][24], the directivity of a flat antenna array is the product of the flat directivity for orthogonal sections of the radiation patterns, divided by the number μ.…”

Section: Results Of Numerical Studiesmentioning

confidence: 99%

Computer simulation, visualization, and synthesis of a digital antenna array used for transmitting and receiving signals in industrial applications

Islamov

Hasanov

Ibrahimov

et al. 2023

Int. J. Microw. Wireless Technol.

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The article is devoted to computer modeling, visualization, and synthesis of a digital antenna array used for transmitting and receiving signals in industrial applications. The paper proposes an iterative method for the amplitude-phase synthesis of an antenna array according to the requirements for the envelope of the side lobes. The proposed method allows to determine the complex amplitudes of the elements of a digital antenna array for any given weight function, based on the theorems of matrix theory. The difference of the method lies in the iterative procedure for choosing the weight function, taking into account the excess level of the side lobes of the digital antenna array. In this regard, in the course of solving the synthesis problem, a weight function was found that leads to the fulfilment of the requirements for radiation patterns and does not lead to a decrease in the directivity coefficient. The signal-to-noise ratio was used as a criterion. For the first time, an analytical expression is given for the formation of a weight function in the course of an iterative process that takes into account the requirements for the envelope of the side lobes. The operability and convergence of the proposed method was confirmed in the course of numerical studies on the example of a digital antenna array. The performed numerical analysis confirmed the effectiveness of the proposed synthesis method.

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Section: Results Of Numerical Studiesmentioning

confidence: 99%

Computer simulation, visualization, and synthesis of a digital antenna array used for transmitting and receiving signals in industrial applications

Islamov

Hasanov

Ibrahimov

et al. 2023

Int. J. Microw. Wireless Technol.

View full text Add to dashboard Cite

show abstract

“…Microwave circular phased antenna arrays can provide circular scanning of radiation patterns with a very small angular step [15][16][17]. At the same time, traditional phased antenna arrays also have serious drawbacks -high thermal losses in semiconductor microwave phase shifters, which limit the efficiency and gain of phased antenna arrays, as well as the complexity of the control system [18][19][20][21]. Ring antenna arrays with discrete-switching pattern scanning are characterized by a simpler control system, lower heat losses in the switch, respectively, higher efficiency and gain, but provide discrete scanning of pattern patterns with a certain angular step, depending on the number of array elements.…”

Section: Formulation Of the Problemmentioning

confidence: 99%

A new approach to modeling a microwave antenna array with a phase radiation pattern

Hunbataliyev

2024

Eng. rev. (Online)

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In this paper, models of an annular antenna array have been developed and an analysis of the main characteristics of this antenna array has been carried out. The obtained results suggest that the considered variants of the microwave ring antenna array with discrete-switching scanning of the azimuthal radiation patterns, taking into account the weight, size and electrical characteristics, seem promising for use in the equipment of radio communication, radar and radio control systems. And also a method for correcting the distortions of the directional patterns of the developed annular antenna array, caused by the mutual influence of emitters, is proposed. To implement this technique, an algorithm has been developed for changing the amplitude distribution of the electromagnetic field strength from the phase distribution of the electromagnetic field strength to compensate for the distortion of parameters caused by the deviation of the beam of the radiation pattern.

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“…Based on the above limits of change in the design parameters of CSRR cells, given by formulas ( 5), (6) in the CST MWS program in (Islamov et al, 2022), the initial data for training neural networks were generated in the amount of 572 samples available in the public domain (Islamov et al, 2023). , ,…”

Section: B Initial Datamentioning

confidence: 99%

Optimization of Broadband Microstrip Antenna Device for 5G Wireless Communication Systems

Islamov

2023

Transport and Telecommunication Journal

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The paper proposes a new method for finding the optimal design of complementary split ring resonator cells for a microstrip antenna, which makes it possible to purposefully optimize the parameters of resonator cells, which significantly improve the electrical characteristics of the antenna. This antenna is designed for cellular communication 5G. The proposed method combines a regression model using a deep network based on fully connected neural layers with a search based on the conditional optimization algorithm COBYLA to find the optimal design parameters of resonator cells. This approach fully automates the process of creating microstrip antennas with resonator cells based on metamaterials and makes it possible to find the parameters of complementary split ring resonator cells that provide the optimal operating mode as a whole and gives the maximum level of antenna radiation while maintaining the bandwidth. The small size of complementary split ring resonator cells opens up the possibility of using this peculiar configuration to create compact and efficient microstrip antennas.

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Numerical simulation of characteristics of propagation of symmetric waves in microwave circular shielded waveguide with a radially inhomogeneous dielectric filling

Cited by 13 publications

References 23 publications

Computer simulation, visualization, and synthesis of a digital antenna array used for transmitting and receiving signals in industrial applications

Computer simulation, visualization, and synthesis of a digital antenna array used for transmitting and receiving signals in industrial applications

A new approach to modeling a microwave antenna array with a phase radiation pattern

Optimization of Broadband Microstrip Antenna Device for 5G Wireless Communication Systems

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