Compact Ku-Band Iris Polarizers for Satellite Telecommunication Systems

Piltyay, Stepan; Sushko, Oleksandr; Bulashenko, Andrew; Demchenko, I. V.

doi:10.1615/telecomradeng.v79.i19.10

Cited by 51 publications

(38 citation statements)

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“…Figure 3b shows an equivalent circuit of a polariser model with three inductive posts. The identical circuit model with inductive seats will have only one regular transmission line [31][32]. The posts are perpendicular to the electric field lines, and the bases are not high relative to the wall size.…”

Section: Mathematical Model Of Tunable Waveguide Polarizermentioning

confidence: 99%

“…The modern designs of polarizers are realized in the form of waveguide structures with irises [10,11,12], ridges [13,14,15,16,17], posts [18,19,20,21,22,23,24], thin metal septums [25,26] and slots [27,28]. The waveguide polarizers with posts and irises operate similarly to the post and iris waveguide phase shifters applied in phased array antennas and other systems [29,30,31,32,33,34,35,36].…”

Section: Introductionmentioning

confidence: 99%

“…Being relatively narrowband, the polarizer has a longitudinal dimension λ0/50-λ0/10. Article [28] presents the design, development, and characterization of compact wideband three-dimensional (3-D) printed circular waveguide-based polariser operating in Ka-band (28)(29)(30)(31)(32)(33)(34). The polariser structure is investigated using fundamental and higher-order modes, based on which a simplified equivalent structure is derived, giving physical insight into its mechanism of operation.…”

Section: Introductionmentioning

confidence: 99%

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Information Resources Economy in Satellite Systems based on New Microwave Polarizers with Tunable Posts

Piltyay

Bulashenko

Kushnir

et al. 2020

PoS

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One of the fundamental problems of modern digital telecommunications is the economy of digital information and frequency resources, which are highly limited. The introduction of novel telecommunication systems and 5G networks requires searching for principal solutions for the economy and reusing the frequency spectrum. Therefore, modern wireless mobile, terrestrial, and satellite systems use various new technologies to increase communication channels' information capacity for the economy of limited frequency resources. One of the most effective ways to reuse the information system's operating frequency band is to apply antennas with polarisation signal processing. Such systems provide the possibility to transmit and to receive simultaneously signals with different types of polarisation. Consequently, the application of electromagnetic waves with two orthogonal polarisations improves wireless systems' information characteristics for various purposes. This allows doubling the information capacity of mobile, terrestrial, and satellite communication channels. Also, polarisation processing is carried out in meteorological and radar systems to receive, transmit, and process information. The essential elements of such systems are microwave polarisers and orthomode transducers. The electromagnetic characteristics of these devices affect the aspects of the whole system significantly. Main electromagnetic factors include phase, matching, and polarisation parameters. The article presents the development of a compact tunable polarizer based on a square waveguide with three posts. The developed polariser operates in the X-band from 8.0 GHz to 8.5 GHz. Created a mathematical model of the polariser is based on the scattering and transmission matrices. To verify the developed theoretical model's correctness, the calculation of all characteristics was also performed numerically using the finite integration technique. The developed compact polariser based on a square waveguide with three posts allows tuning it's matching and polarisation characteristics by changing all posts' heights. The developed polariser's main advantages are small dimensions, tuning options, and aspects of polarisation transformation.

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Section: Mathematical Model Of Tunable Waveguide Polarizermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Information Resources Economy in Satellite Systems based on New Microwave Polarizers with Tunable Posts

Piltyay

Bulashenko

Kushnir

et al. 2020

PoS

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“…Nowadays, microwave waveguide polarizers 1 are fundamental devices in modern radar 2 and satellite telecommunication antenna systems 3 , which receive and transmit the signals with orthogonal circular polarizations of electromagnetic waves 4 . A polarizer 5 determines the performance of polarizations transformation 6 of waveguide feed network of the antenna system 7 . Thus, accurate calculation of the phase and polarization characteristics of modern waveguide polarizers is of crucial importance.…”

Section: Introductionmentioning

confidence: 99%

Microwave Waveguide Polarizers Optimization in Frequency and Time Domains

Piltyay¹,

Bulashenko²

2020

Prospects and Priorities of Research in Science and Technology

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“…Наиболее известными разработанными конструкциями поляризаторов являются структуры со штырями [17][18][19], ребристые структуры [20-33] и структуры с диафрагмами [34][35][36][37][38][39][40][41][42][43][44][45].…”

Section: Introductionunclassified

Modelling and Optimization of Waveguide Polarizers With the Account of Irises Thickness

Bulashenko¹,

Piltyay²

2020

Integration of Traditional and Innovation Processes of Development of Modern Science

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Today, there is a continuous improvement of modern satellite telecommunication systems caused by the requirements of constantly increasing information volumes. The fundamental elements of such systems are antennas with polarization processing of signals. This processing is mainly performed using microwave waveguide polarizers and orthomode transducers. Therefore, the development and optimization of new waveguide polarizers is a relevant engineering problem. The simplest from the technological point of view are the polarizers based on waveguides with irises. 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 to investigate the influence of the design parameters of the polarizer on its electromagnetic characteristics. A new mathematical model of the polarizer based on square waveguide with irises was created using wave transmission and scattering matrices of the structure elements. Developed mathematical model takes into account the thickness of the irises. A new mathematical model of a waveguide polarizer is based on the general wave scattering matrix. This matrix was calculated using the theory of microwave circuits. The main characteristics of the square waveguide polarizer were expressed through the elements of this matrix. The developed new mathematical model of a square waveguide polarizer with irises takes into account the heights of the irises, the distances between them and their thickness. The new mathematical model is simpler and faster for the determination of the electromagnetic characteristics of the waveguide polarizer compared to the finite integration technique, which is often applied to analyze microwave devices for various purposes. In addition, developed new mathematical model of the waveguide iris polarizer allows to estimate the variations of all required electromagnetic characteristics if the structure parameters deviate from their optimal values. Using the created mathematical model we have carried out the optimization of the polarizer matching and polarization characteristics in the operating satellite Ku-band 10.7–12.8 GHz. Simulated optimum design of the waveguide polarizer provides VSWR for horizontal and vertical polarizations less than 3.26. Optimized differential phase shift is 90° ± 4.2°. Axial ratio of the waveguide iris polarizer is less than 1.43 dB. Corresponding XPD is higher than 21.7 dB.

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Compact Ku-Band Iris Polarizers for Satellite Telecommunication Systems

Cited by 51 publications

References 0 publications

Information Resources Economy in Satellite Systems based on New Microwave Polarizers with Tunable Posts

Information Resources Economy in Satellite Systems based on New Microwave Polarizers with Tunable Posts

Microwave Waveguide Polarizers Optimization in Frequency and Time Domains

Modelling and Optimization of Waveguide Polarizers With the Account of Irises Thickness

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