Combined Ray-Tracing and Physical-Optics Model for Flat-Aperture PPW Lens Antennas

被引：0
|
作者：
Chen, Mingzheng [1 ]
Mesa, Francisco [2 ]
Quevedo-Teruel, Oscar [1 ]
机构：
[1] KTH Royal Inst Technol, Div Electromagnet Engn & Fusion Sci, Stockholm, Sweden
[2] Univ Seville, Dept Appl Phys 1, Seville, Spain
来源：
2024 18TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION, EUCAP | 2024年
关键词：
Equivalent magnetic current; parallel-plate-waveguide; lens antennas; physical optics; radiation characteristics; ray tracing;
D O I：
10.23919/EuCAP60739.2024.10501522
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper proposes a combined ray-tracing and physical-optics model to analyze parallel-plate-waveguide lens antennas with a flat aperture. A family of rays is traced from the source to a set of target points on the lens radiating aperture, giving a description of the aperture electric field. On the basis of the physical-optics approximation, an equivalent magnetic current is then assumed and used to evaluate the far-field radiation characteristics in every direction. This numerical approach is validated by applying it to a particular planar Mikaelian lens antenna and comparing the results with those obtained using a commercial full-wave simulator.
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