Integrated Physical Optics for Calculating Electric-Large Metallic Sphere Scattering Irradiated by Vortex Wave in Microwave Frequency Band

In this letter, a novel integrated physical optics (PO) method for calculating high-frequency scattering of nonplane wave is proposed, and the orbital angular momentum (OAM) wave scattering upon an electric-large metallic sphere is illustrated. A high-order Bessel wave expanded by a series of plane...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2022-06, Vol.21 (6), p.1288-1292
Main Authors: Wu, Zhe, Wu, JiaJi, Li, HaiYing, Qu, Tan, Meng, XiangShuai, Xu, Qiang, Wu, ZhenSen, Bai, Jing, Yang, Lin, Gong, Lei, Yun, Yu
Format: Article
Language:English
Subjects:
Angular momentum
Angular spectra
Antenna measurements
Conductors
Electric conductors
Irradiation
Mathematical analysis
Microwave frequencies
Optical vortices
orbital angular momentum (OAM)
Orbits
Phase measurement
Physical optics
physical optics (PO)
Plane waves
Receiving antennas
Reflection
Scattering
Wave scattering
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Summary:In this letter, a novel integrated physical optics (PO) method for calculating high-frequency scattering of nonplane wave is proposed, and the orbital angular momentum (OAM) wave scattering upon an electric-large metallic sphere is illustrated. A high-order Bessel wave expanded by a series of plane wave angular spectra is selected to irradiate a perfect electric conductor sphere. Combining the PO approximation, the scattered field from the facet element is calculated, and the total scattered effect is obtained by vector superposition of the scattering from all facets. The calculated results are verified by the EM simulated software FEKO and scattering measurement experiment. Numerical results show that the scattered field of the vortex wave passing through the standard target still has the OAM characteristics, retaining the same topological charge. It can be seen that the proposed combined PO method is feasible at high frequency and can be extended to solve the scattering of other beams and objects, which has a broad range of applications.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2022.3165703