Polarization Plane Rotation by Arbitrary Angle Using &lt;formula formulatype="inline"&gt;&lt;tex Notation="TeX"&gt;${ D}_{4}$&lt;/tex&gt;&lt;/formula&gt; Symmetrical Structures

Kolmakova, N. G.; Prikolotin, S. A.; Perov, Andrei Olegovich; Деркач, В. Н.; Kirilenko, А. A.

doi:10.1109/tmtt.2015.2509966

Cited by 9 publications

(5 citation statements)

References 7 publications

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“…Th e VSWR measurements of the signal refl ected from a conjugated pair of irises were conducted versus microwave signal frequency on the experimental setup described in [20]. Th e confi dence interval of the refl ection coeffi cient is determined by the measuring device parameters (Fig.…”

Section: Experimental Verifi Cationmentioning

confidence: 99%

Eigen-Oscillations of Planar-Chiral Bilayer Objects Give Rise to Artificial Optical Activity

Kirilenko,

Steshenko,

Ostryzhnyi

et al. 2024

Radio phys. radio astron.

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Subject and Purpose. The research focuses on how the resonance frequencies, the Q-factor of resonances, and the polarization plane rotation ability are influenced by the topology of individual components of a planar-chiral double-layer object consisting of a pair of con- jugated irises having rectangular slots and accommodated in a circular waveguide. Methods and Methodology. All the numerical results are obtained by the mode-matching technique (MMT) and the transverse reso- nance method on the basis of our own proprietary MWD-03 software package. Results. By the waveguide example, it has been shown that the internal structure of individual components and dihedral symmetry of the conjugated bilayer allow all the conclusions of the spectral theory (theory of eigen-oscillations) to be carried over to all the objects of the type. On the other hand, these objects behave as symmetric two-port waveguide components with conventionally "symmetric" and "antisymmetric" eigen-oscillations. The mutual coupling of these eigen-oscillations depends on the bilayer parameters. Where the frequen- cies of these eigen-oscillations are close enough, the polarization plane rotation and the transmission bandwidth reach their highest. It has been demonstrated that as a slot number increases, the resonance frequency decreases. The theoretical results have been confirmed by the measurements at the X range of frequencies for pairs of conjugated irises with various numbers of rectangular slots. Conclusions. A pair of conjugated chiral irises can rotate the polarization plane. The iris topology, iris spacing, and the mutual ro- tation angle alter resonance frequencies. The resonance frequencies can be reduced by increasing the rectangular slot length and/or slot number. Even though they have not longitudinal symmetry, such objects have properties of two-port waveguide components. In particular, the phase shift of their reflection and transmission coefficients is modulo 90. Besides, a possibility exists to divide eigen-oscillations into conventionally "symmetric" and "antisymmetric" based on the proximity of their fields to those whose type of symmetry is known before- hand. This makes it possible to approximate the reflection and transmission coefficients through corresponding eigenfrequencies.

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Section: Experimental Verifi Cationmentioning

confidence: 99%

Eigen-Oscillations of Planar-Chiral Bilayer Objects Give Rise to Artificial Optical Activity

Kirilenko,

Steshenko,

Ostryzhnyi

et al. 2024

Radio phys. radio astron.

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“…In [55][56][57][58][59][60] various guide polarizers with diaphragms in the form of slots in circular and square waveguides are presented. In addition, the phenomenon of optical activity is suggested for the development of novel polarizers with diaphragms in the form of slots in a rectangular waveguide [55,56].…”

Section: Designs Of Modern Waveguide Polarizersmentioning

confidence: 99%

“…The designs of such polarizers contained four slotbased diaphragms. In [57] a design of a polarizer based on a structure with two-sided symmetry is presented. A new tunable design of a polarizer based on a circular slot waveguide was proposed in [58].…”

Section: Designs Of Modern Waveguide Polarizersmentioning

confidence: 99%

Comparative Analysis of Compact Satellite Polarizers Based on a Guide with Diaphragms

Piltyay

Bulashenko

Fesyuk

et al. 2021

AEM

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In this article we carry out the comparative analysis of new compact satellite polarisers based on a square guide with diaphragms. The main electromagnetic parameters of the developed microwave guide devices with various amount of diaphragms were obtained within the satellite frequency interval from 10.7 GHz to 12.75 GHz. Waveguide polarization converters with different amount of diaphragms from 2 to 5 have been designed and optimized. The main parameters of the presented polarizer were calculated applying the numerical method of finite integration in the frequency domain. Optimization of the electromagnetic parameters of the developed waveguide devices was carried out using the software CST Microwave Studio. As a result, sizes of the device designs have been optimized for the provision of improved polarization and phase parameters. The performed analysis showed that a waveguide polarizer with five diaphragms has the best electromagnetic parameters. The developed compact polarizer with five diaphragms based on a square guide provides a minimum deviation of the output phase difference from 90 degrees and high level of isolation between linear polarization over the entire operating frequency range. Presented in the article compact waveguide polarization converters can be applied in satellite systems, which require efficient polarization separation of signals.

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“…rotators [11], [12], and have lately regained relevance thanks in part to their interesting dispersion properties [13], [14].…”

Section: Introductionmentioning

confidence: 99%

Modal Spectrum Shaping and Rotational Unit-Cell Design of Second-Order Symmetric Waveguides

Garcia-Contreras,

Córcoles,

Ruiz-Cruz

2023

IEEE Trans. Antennas Propagat.

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Polarization Plane Rotation by Arbitrary Angle Using <formula formulatype="inline"><tex Notation="TeX">${ D}_{4}$</tex></formula> Symmetrical Structures

Cited by 9 publications

References 7 publications

Eigen-Oscillations of Planar-Chiral Bilayer Objects Give Rise to Artificial Optical Activity

Eigen-Oscillations of Planar-Chiral Bilayer Objects Give Rise to Artificial Optical Activity

Comparative Analysis of Compact Satellite Polarizers Based on a Guide with Diaphragms

Modal Spectrum Shaping and Rotational Unit-Cell Design of Second-Order Symmetric Waveguides

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