Electromagnetic Simulation of New Tunable Guide Polarizers with Diaphragms and Pins

Piltyay, Stepan; Bulashenko, Andrew; Shuliak, Vadym; Bulashenko, Oleksandr

doi:10.7716/aem.v10i3.1737

Cited by 23 publications

(5 citation statements)

References 67 publications

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“…To check the correctness of the results obtained, let us compare the electromagnetic characteristics that were obtained by different methods. Well-known electrodynamic T T T methods were chosen as methods, such as the method of finite integration in the time domain and the method of finite elements in the private domain [77][78][79][80][81].…”

Section: Results Of Analysis Of Electromagnetic Characteristics Of a ...mentioning

confidence: 99%

Accuracy and Agreement of FDTD, FEM and Wave Matrix Methods for the Electromagnetic Simulation of Waveguide Polarizers

Bulashenko

Piltyay

Polishchuk

et al. 2022

AEM

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Waveguide devices of polarization processing are key elements of modern dual-polarized antenna systems. Such antenna systems carry out polarization transformation and separation of signals with orthogonal polarizations in satellite communications and radar appliances. Well-known electrodynamic methods are used to simulate performance of such devices. This paper investigates the accuracy and mutual matching of wave matrix method with FDTD and FEM. The wave matrix method is based on the theory of scattering and transmission matrices. The main electromagnetic characteristics of a polarizer were obtained through the elements of these matrices. The main characteristics of a polarizer were compared. They include phase difference of orthogonal polarizations, level of voltage standing wave, ellipticity coefficient and level of cross-polarization isolation. Comparison of electromagnetic characteristics was carried out at the example of a waveguide iris polarizer for the operating frequency range from 13.0 to 14.4 GHz. In addition, the process of optimization of electromagnetic characteristics was carried out by changing the geometric dimensions of a polarizer. Calculated by different theoretical methods characteristics were compared and analyzed. Results, which were obtained by considered methods, are in good agreement

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Section: Results Of Analysis Of Electromagnetic Characteristics Of a ...mentioning

confidence: 99%

Accuracy and Agreement of FDTD, FEM and Wave Matrix Methods for the Electromagnetic Simulation of Waveguide Polarizers

Bulashenko

Piltyay

Polishchuk

et al. 2022

AEM

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“…У роботах [9,57] розроблено нову методику аналізу електромагнітних характеристик хвилевідних поляризаторів з діафрагмами. За її допомогою були створені компактні поляризатори на основі квадратного хвилеводу з діафрагмами для Ku-діапазону частот 10.7…12.8 ГГц [58,59].…”

Section: сучасні хвилевідні пристрої для обробки поляризації та їхні ...unclassified

“…Хвилевідний поляризатор з чотирма діафрагмами забезпечує диференціальний фазовий зсув на 90° ± 3.5° з КСХН < 1.24 та КПР > 30.3 дБ. Робота [57] містить результати розробки хвилевідного поляризатора, що працює в С-діапазоні частот 3.4…4.2 ГГц. Хвилевідний поляризатор з чотирма діафрагмами забезпечує диференціальний фазовий зсув на 90° ± 3.4° з КСХН < 1.36 та КПР > 30 дБ.…”

Section: сучасні хвилевідні пристрої для обробки поляризації та їхні ...unclassified

Microwave waveguide polarizer for satellite communication antennas with circular polarization

Piltyay¹,

Bulashenko²,

Polishchuk³

et al. 2022

Kosm. nauka tehnol.

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The volumes of information transmitted in modern satellite telecommunication systems are constantly increasing. Antennas with signal polarization processing, which is performed by polarizers, are the fundamental elements of such systems. Therefore, the development of methods for the analysis of new polarizers is an important problem. From a technological point of view, polarizers based on waveguides with irises are the simplest. Analysis and optimization of electromagnetic characteristics of a polarizer based on a square waveguide with irises are the goals of the presented research. To solve this optimization problem, we have created a new mathematical model, which allows investigating the influence of the design parameters of the polarizer on its electromagnetic characteristics. A mathematical model of the waveguide polarizer with irises was created by the method of decomposition using wave transmission and scattering matrices. Besides, the new mathematical model takes into account the thickness of the irises using their equivalent T- and П-shaped substitution circuits. The general wave scattering matrix is the basis of a new mathematical model of a waveguide polarizer. This matrix was determined using the theory of microwave circuits. The main characteristics of the waveguide polarizer were determined through the elements of this matrix. Here, we perform the optimization of the polarizer characteristics in the Ku-band 10.7–12.8 GHz. The developed new mathematical model of a waveguide polarizer with irises makes it possible to take into account the heights of the irises, distances between them and their thickness. The new mathematical model determines the electromagnetic characteristics of the polarizer in a simpler and faster way compared to the finite integration technique, which is often used for the analysis of microwave devices for various purposes

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“…Therefore, standard rectangular waveguides possess width of the broad wall, which in the whole operating frequency band must be greater than the half wavelength of fundamental TE10 mode [70]. On the other hand, square waveguide is typically selected for development of dual-polarization antennas and microwave systems [71][72][73][74]. It possesses equal height and width of its side conducting walls.…”

Section: Operation Principle Of a Developed Square Waveguide Iris Polarizer For Fundamental Electromagnetic Modesmentioning

confidence: 99%

Square Waveguide Polarizer with Diagonally Located Irises for Ka-Band Antenna Systems

Piltyay

2021

AEM

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This article presents the results of development and optimization of a new square waveguide polarizer with diagonally located square irises. The application of suggested geometrical modification of irises form and location instead of a standard wall-to-wall irises configuration allows to exclude 45-degree twists between wideband waveguide polarizer and orthomode transducer of a dual-polarized antenna feed system. In addition, a waveguide polarizer and polarization duplexer can be manufactured by milling technology as two single details, which makes the proposed engineering solution reliable, simple for simulation, development and application. Suggested new polarizer design was developed for the satellite operating Ka-band. It contains 12 irises, which are symmetrically located in the diagonal corners of a square waveguide. Obtained optimal polarization converter provides excellent matching and polarization performance. The maximum level of VSWR is less than 1.04 for both orthogonal polarizations. Values of cross-polarization discrimination are higher than 32 dB in the operating Ka-band. Developed square waveguide polarizer with diagonally located irises can be applied in modern wideband satellite antennas.

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Electromagnetic Simulation of New Tunable Guide Polarizers with Diaphragms and Pins

Cited by 23 publications

References 67 publications

Accuracy and Agreement of FDTD, FEM and Wave Matrix Methods for the Electromagnetic Simulation of Waveguide Polarizers

Accuracy and Agreement of FDTD, FEM and Wave Matrix Methods for the Electromagnetic Simulation of Waveguide Polarizers

Microwave waveguide polarizer for satellite communication antennas with circular polarization

Square Waveguide Polarizer with Diagonally Located Irises for Ka-Band Antenna Systems

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