A Tunable Compact Polarizer in a Circular Waveguide

Kirilenko, А. A.; Steshenko, Sergiy; Деркач, В. Н.; Ostryzhnyi, Yevhenii

doi:10.1109/tmtt.2018.2881089

Cited by 42 publications

(26 citation statements)

References 7 publications

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“…Поляризатори із діафрагмами [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] є альтернативною конструкцією, що більш ширше використовують відносну смугу пропускання та мають кращі електромагніті характеристики. В антенних системах із подвійною поляризацією хвилеподібний поляризатор із діафрагмами функціонує у поєднанні з ортомодовим перетворювачем [9], що ускладнює структуру живлення.…”

Section: аналіз останніх дослідженьunclassified

Waveguide polarizer with three irises for antennas of satellite television systems

Bulashenko¹,

Piltyay²,

Кушнір³

et al. 2021

SBT

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Section: аналіз останніх дослідженьunclassified

Waveguide polarizer with three irises for antennas of satellite television systems

Bulashenko¹,

Piltyay²,

Кушнір³

et al. 2021

SBT

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“…The authors investigate the range of angles of rotation of the irises of such a polarizer. A tuneable polarizer design based on a circular waveguide is proposed 24 . Polarization rotation is carried out by mechanical rotation of the irises relative to each other.…”

Section: Introductionmentioning

confidence: 99%

Analytical modeling and optimization of new Ku‐band tunable square waveguide iris‐post polarizer

Piltyay

Bulashenko

Sushko

et al. 2021

Int J Numerical Modelling

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A novel design of the polarizer based on a square waveguide with four posts and four irises for Ku‐band 10.7–12.8 GHz is proposed. The main advantage of the developed polarizer design is the option to tune its polarization characteristics by variation of the posts height. The equivalent circuit of the polarizer has been obtained using scattering and transfer matrices technique. Using this model, the polarization and matching characteristics of the suggested polarizer were optimized simultaneously using the trust region method. This method is reliable and robust since it provides good convergence properties. The novelty of this study lies in the use of a new waveguide polarizer structure based on a combination of irises and posts. Posts enable fine‐tuning of the polarizer performance, while irises promote wide operating frequency band. The following simulated characteristics of the optimal polarizer design were obtained: VSWR for the main modes of horizontal and vertical polarization is less than 1.47, the differential phase shift is within 90° ± 2.6°, the axial is less than 0.46 dB, and the XPD is higher than 32 dB in the operating frequency range. A developed polarizer can be applied in antenna feeds for satellite communication and radar systems.

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“…A large number of scientific articles [29][30][31][32][33][34][35][36][37][38][39][40][41], which consider polarizers, contain only the results of computer simulation, the process of which requires a large amount of time. Therefore, there is a need to create a new mathematical method for the analysis of waveguide polarizers based on reactive elements.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Compact Polarizers for Satellite Telecommunication Systems With the Account of Thickness of Irises

Bulashenko

Piltyay

Demchenko

2021

KPI SN

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Background. One of the main problems in modern satellite telecommunication systems is to increase the volume of information transmission with simultaneous preservation of its quality. Key element of such systems is antenna systems with polarization processing, which is carried out using polarizers. Therefore, development of new polarizers and simple techniques for their analysis and optimization are important problems. The most simple, effective, technological and actual for analysis are polarizers based on waveguides with irises. Objective. The purpose of the paper is to create a mathematical model of the polarizer based on a square waveguide with irises, which allows analyzing the influence of polarizer’s design parameters on its electromagnetic characteristics. Methods. A mathematical model of the waveguide polarizer with irises is created by decomposition technique using transfer and scattering wave matrices. To take into account the irises’ thickness their equivalent T- and Π-shaped circuits were used. Results. We have developed mathematical model of the waveguide polarizer with irises, which takes into account their thickness and is based on the complete scattering wave matrix of the waveguide polarizer. The matrix has been obtained using the microwave circuit theory. The main characteristics of the waveguide polarizer were defined using matrix elements. The optimization of characteristics of a polarizer was carried out in the operating Ku-band 10.7–12.8 GHz. Conclusions. Suggested mathematical model of a waveguide polarizer with irises provides the account of heights of irises, distances between them and their thickness. The results obtained show that this model is simpler and faster for the calculation of electromagnetic characteristics compared to finite elements method, which is often used for analysis of microwave devices for various applications.

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A Tunable Compact Polarizer in a Circular Waveguide

Cited by 42 publications

References 7 publications

Waveguide polarizer with three irises for antennas of satellite television systems

Waveguide polarizer with three irises for antennas of satellite television systems

Analytical modeling and optimization of new Ku‐band tunable square waveguide iris‐post polarizer

Simulation of Compact Polarizers for Satellite Telecommunication Systems With the Account of Thickness of Irises

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