USE OF MULTILAYER DIELECTRIC FOR SLOT PHASED ARRAY ANTENNAS

Olga I. Yastrebtsova, Vadim V. Chebyshev,
Institute of Radio and Information Systems (IRIS), Vienna, Austria

DOI: 10.36724/2664-066X-2023-9-6-2-11

SYNCHROINFO JOURNAL. Volume 9, Number 6 (2023). P. 2-11.

Abstract

It is of interest to study slot spiral radiators as part of a phased array with structural elements in the form of multi-layer dielectrics that make up a multilayer substrate and a spiral cover, which, by changing the parameters of a multilayer dielectric, can significantly change the frequency properties of the radiator and its overall dimensions. The purpose of the work is to develop a mathematical model for a phased array in the form of a periodic structure with slotted spiral radiators using multilayer dielectrics in the design, and its numerical analysis with the study of its frequency properties when choosing the topology of the spiral, the parameters of the dielectric layered medium, followed by determining the design dimensions of the spiral as an element of the phased antenna arrays. A mathematical model of a phased array is presented in the form of a periodic structure with slotted radiators using multi-layer dielectrics in the design. The method is based on the conversion of the electrodynamic problem of excitation to an integral equation with its subsequent transformation to a one-dimensional Fredholm integral equation of the first kind. The directional and polarization characteristics of the phased antenna arrays element are determined, and a numerical analysis of its frequency properties is carried out.

Keywords: Phased array antenna, slot antenna, multilayer media, integral equations, self-regularization method

References

[1] R. Anand and S. Maity, “Design of Substrate Integrated Waveguide-based Periodically-loaded Archimedean Spiral Slot Leaky Wave Antenna,” 2022 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), Bangalore, India, 2022, pp. 1732-1735, doi: 10.1109/MAPCON56011.2022.10047189.

[2] Z. -P. Zhong and X. Zhang, “A Travelling-Wave-Fed Slot Spiral Antenna with Wide Axial-Ratio Bandwidth and Beamwidth for GNSS Applications,” IEEE Open Journal of Antennas and Propagation, vol. 2, pp. 578-584, 2021, doi: 10.1109/OJAP.2021.3074287.

[3] Y. Pan and Y. Dong, “Low-Profile Low-Cost Ultra-Wideband Circularly Polarized Slot Antennas,” IEEE Access, vol. 7, pp. 160696-160704, 2019, doi: 10.1109/ACCESS.2019.2950521.

[4] M. Kalfa and V. B. Ertürk, “Analysis of Slotted Sectoral Waveguide Arrays with Multilayered Radomes,” IEEE Transactions on Antennas and Propagation, vol. 64, no. 2, pp. 800-805, Feb. 2016, doi: 10.1109/TAP.2015.2506719.

[5] V.S. Bocharov, A.G. Generalov, E.V. Gadzhiev, “The choice of the substrate dielectric of a microstrip antenna when building a miniature antenna,” Antennas, No. 12(211), 2014, pp. 38-44.

[6] V.V. Chebyshev, “Computational electrodynamics for stripe structures in layered media,” Moscow: CJSC “PSTM”. 2013. 128 p.

[7] V.V. Chebyshev, “Microstrip antennas in layered media,” Moscow: Radio engineering. 2007. 160 p.

[8] O.I. Yastrebtsova and V.V. Chebyshev, “Impact of a two-layer dielectric structure on the microstrip antenna characteristics,” T-Comm, vol. 12, no.8, pр. 32-37, 2018.

[9] V.V. Chebyshev, O.I. Yastrebtsova, “Calculation of slot radiators with a layered coating based on the method of integral equations,” Antennas. No. 3 (235). 2017, pp. 24-30.