Generalized Mathematical Model of Thin Asymmetric Inductive Diaphragm in Rectangular Waveguide

Zakharchenko, Oksana; Martynyuk, S. Ye.; Stepanenko, P. Ya.

doi:10.20535/radap.2018.72.13-22

Cited by 2 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where r is the axial ratio, which preliminary must be transformed to a linear scale from the logarithmic one. Axial ratio (21) and XPD (22) at the polarizer's output along with the differential phase shift (18) and VSWRs (19), (20) for the electromagnetic waves of both polarizations must be simultaneously calculated during the simulation of iris polarizers. Developed analytical technique can be used for the optimization of waveguide iris polarizers for different fractional bandwidths.…”

Section: Analytical Formulae For the Characteristics Of Waveguide Irimentioning

confidence: 99%

See 1 more Smart Citation

Wave Matrix Technique for Waveguide Iris Polarizers Simulation. Theory

Bulashenko¹,

Piltyay²,

Demchenko³

2020

J. Nano- Electron. Phys.

View full text Add to dashboard Cite

Today polarization-processing devices are widely used in satellite information systems. Waveguide polarizers are the key element of antenna systems used to convert signal polarization from linear to circular type and vice versa. The circularly polarized signals have many significant advantages over the signals with other types of polarization. Consequently, simultaneous application of polarizers with other radio signal processing devices highly increases the efficiency of new satellite information and telecommunication systems for various purposes, wireless data transmission systems, mobile communication systems, radar systems and medical diagnostic systems. In this article, we have developed a new matrix technique for the calculation of parameters and characteristics of a polarizer based on a square waveguide with three irises, which are inductive or capacitive loads depending on the wave's polarization. Based on the theory of microwave circuits, the analytical expressions of the general wave scattering matrix were derived using the transmission and scattering wave matrices of elements of a polarizer structure. As a result, the main characteristics of the polarizer were obtained: differential phase shift, voltage standing wave ratio for vertical and horizontal polarizations, axial ratio and cross-polar discrimination. The presented method makes it possible to study the influence of the polarizer dimensions, such as the heights of the irises and the distances between them, on its main characteristics. Obtained analytical model makes it possible to find theoretically optimal sizes, which provide the required polarization characteristics of the device with the best matching in the operating frequency band. In addition, the developed wave matrix technique can be applied for further optimization using the specialized programs for microwave device simulation.

show abstract

Section: Analytical Formulae For the Characteristics Of Waveguide Irimentioning

confidence: 99%

“…In [18], the electrodynamic problem of finding a generalized scattering matrix of an infinitely thin asymmetric one-sided inductive diaphragm in a rectangular waveguide was solved using the method of integrated levels.…”

Section: Introductionmentioning

confidence: 99%