Análisis Y Diseño Optimizado De Dispositivos Pasivos De Microondas De Banda Amplia Con Guías De Sección Transversal Arbitraria

This paper proposes an original structure of evanescent quad-ridge antenna to conceive dual-polarized full-metal front-ends that can be used in active antennas with wide field-ofview. An original design methodology is here proposed that allows to induce radiation from sub-wavelength squared apertures based on the use of evanescent and quad-ridge waveguides. The proposal is illustrated by means of a design with 4.5% bandwidth providing dual-circular polarization with good performance up to 50 o -scanning even in the diagonal plane. For comparison purposes, a metallic benchmark is also proposed, which is based on the use of classical quad-ridge horns. Such comparative analysis allows to understand the superior performance of the proposed concept and its main advantage: it allows to avoid the excitation of the first high order mode in the squared quadridge aperture. The excitation of such spurious mode in the antenna is explained in terms of simple equivalent circuit models characterizing the aperture periodic discontinuity.

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“…It should be noted that the EQA can be modelled by adopting conventional theory of evanescent filters [32,Ch. 4].…”

Section: A Antenna Description and Design Processmentioning

confidence: 99%

Solving Sub-Wavelength Lattice Reduction in Full-Metal Front-Ends for Dual-Polarized Active Antennas

Polo‐López

Menargues²,

Capdevila³

et al. 2022

IEEE Trans. Antennas Propagat.

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Análisis Y Diseño Optimizado De Dispositivos Pasivos De Microondas De Banda Amplia Con Guías De Sección Transversal Arbitraria

Cited by 1 publication

References 143 publications

Solving Sub-Wavelength Lattice Reduction in Full-Metal Front-Ends for Dual-Polarized Active Antennas

Solving Sub-Wavelength Lattice Reduction in Full-Metal Front-Ends for Dual-Polarized Active Antennas

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