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Träfflista för sökning "WFRF:(Poveda Garcia Miguel) "

Sökning: WFRF:(Poveda Garcia Miguel)

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1.
  • Gil-Martinez, Alejandro, et al. (författare)
  • Symmetric Tapering of Bi-Directionally Fed Leaky-Wave Antennas for Multi-Beam Synthesis
  • 2023
  • Ingår i: 2023 17TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION, EUCAP. - : Institute of Electrical and Electronics Engineers (IEEE).
  • Konferensbidrag (refereegranskat)abstract
    • We report a theoretical investigation on the possibilities and trade-offs when tapering a bi-directional fed leaky-wave antenna (LWA) to reduce the side lobes level, when operating with the two opposite antenna ports. It is demonstrated that, for high radiation efficiency designs, the directivity can be distorted due to low aperture illumination efficiency if the LWA is not symmetrically tapered with an adequate modulation function. The theory is corroborated with simulations of modulated LWAs in substrate integrated technology.
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2.
  • Poveda-García, Miguel, et al. (författare)
  • Efficient Ray-Tracing Approach to Analyze Arbitrarily Shaped Leaky-Wave Antennas Embedded in Lenses
  • 2024
  • Ingår i: 18th European Conference on Antennas and Propagation, EuCAP 2024. - : Institute of Electrical and Electronics Engineers (IEEE).
  • Konferensbidrag (refereegranskat)abstract
    • This paper introduces a computationally efficient ray-tracing approach to study the radiation pattern of a leaky-wave antenna embedded in a lens with an arbitrary shape. The ray-tracing technique, based on geometrical optics, is used to calculate the phase and amplitude of the fields at the lens aperture, taking into account reflections due to the transition from the lens to the free space. To validate the results, the radiation patterns obtained in some examples are compared with full-wave simulations, demonstrating a considerable time reduction in the analysis of up to 99.6% in some cases.
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