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电信和无线电工程
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN 打印: 0040-2508
ISSN 在线: 1943-6009

卷:
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电信和无线电工程

DOI: 10.1615/TelecomRadEng.v74.i8.70
pages 735-744

DIFFERENTIAL PHASE SECTIONS BASED ON FORM BIREFRIGENCE IN THE TERAHERTZ FREQUENCY RANGE

V. I. Bezborodov
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
O.S. Kosiak
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
Ye. M. Kuleshov
A.Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
V. V. Yachin
Institute of Radio Astronomy, National Academy of Sciences of Ukraine, 4, Chervonopraporna St., Kharkiv, 61002, Ukraine

ABSTRACT

The polarization transformers, main elements of which are differential phase sections (DPS), are widely used when developing the THz polarization radio measuring ducts. The use of submillimeter waves allows carrying out investigations in radio astronomy, radio spectroscopy, biology, medicine, physics of the atmosphere, etc. Due to the fact that quasi-optical transmission lines are used in the terahertz frequency range the application of optical principles, when developing the DFS based on birefringent dielectrics, is justified. Some crystals (sapphire, Iceland spar, quartz, etc.) have this property. The artificial dielectric structures having the form birefringence property and the structure period commensurable with the wavelength are considered in the paper. Numerical method of integral functionals in the frequency domain is applied for full-wave scattering problem solution. This method is based on three-dimensional integral equations for the equivalent electric and magnetic polarization currents of periodic medium. The conditions of such structures matching with free space are also examined. The matching is performed using dielectric layers. The experimental study of such DFS models is carried out. The results confirm the correctness of the choice of such structures and the conditions of their matching.

REFERENCES

  1. Born, M. and Wolf, E., Principles of Optics.

  2. Kirschbaum, H. and Chen, S., A Method of Producing Broad-Band Circular Polarization Employing an Anisotropic Dielectric.

  3. Kikuta, H., Ohira, Y., and Iwata, K., Achromatic quarter-wave plates using the dispersion of form birefringence.

  4. Yachin, V., Substantiation of the field functional method as applied to scattering by a doubly periodic magnetodielectric structure.

  5. Grant of 7-th Program EU "Extended Non-Destructive Testing of Composite Bonds".

  6. Kuleshov, E.M., SubMM waveband measurements.


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