Ray-Tracing and Physical Optics Modeling of Leaky-Wave Antennas Combined with Lenses

  1. Poveda-Garcia, Miguel 4
  2. Mesa, Francisco 2
  3. Algaba-Brazález, Astrid 3
  4. Quevedo-Teruel, Oscar 1
  5. Gomez-Tornero, Jose Luis 4
  1. 1 Division of Electromagnetic Engineering and Fusion Science, KTH Royal Institute of Technology, Stockholm, Sweden
  2. 2 Department of Applied Physics 1, ETS Ingeniería Informática, Universidad de Sevilla, Seville, Spain
  3. 3 Ericsson Research, Ericsson AB, Gothenburg, Sweden
  4. 4 Department of Technology of Information and Communications, Universidad Politécnica de Cartagena, Cartagena, Spain
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Journal:
IEEE Transactions on Antennas and Propagation

ISSN: 0018-926X,  1558-2221

Year of publication: 2024

Pages: 1-1

Type: Article

DOI: 10.1109/TAP.2024.3487356 GOOGLE SCHOLAR lock_openOpen access editor

More publications in: IEEE Transactions on Antennas and Propagation

Abstract

We present an efficient and accurate modeling of arbitrary-shaped locally-modulated leaky-wave antennas (LWAs) combined with dielectric lenses by means of a combined ray-tracing (RT) and physical optics (PO) approach. An in-house ray tracing is used to obtain the amplitude and phase of the fields at the arbitrary lens aperture considering the modulated leaky mode that radiates from a conformal LWA. Next, we calculate the far-field radiation pattern using PO, and more specifically through Kirchhoff’s scalar diffraction theory. Our proposed approach has a reduction in computational time above 99% compared to full-wave simulations of commercial software. This time reduction is critical for the efficient design of bespoke modulated curved LWAs combined with lenses, which can provide directive frequency-scanned radiation with enhanced performance when compared to the use of LWAs without lenses.

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