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In this paper, the eccentricity of a large integrated lens antenna is optimised for a high-gain beam-steering antenna. With low permittivity lens materials, conventional integrated lens types, namely the extended hemispherical and the elliptical ones, have different characteristics when used in beam-steering applications. An optimal eccentricity is found that combines the advantages of the conventional...
The range of validity and accuracy of the GO/PO method for the analysis of ILAs has been determined by comparing the GO/PO results to reference data obtained using BoR-FDTD. The internal reflections have been modeled in both cases. Six lens configurations have been considered: two lens diameters (3lambda0 and 6lambda0), and three lens materials (Rexolite, Macor, and Silicon). Our results have shown...
A layer-by-layer stereolithographic process has been developed successfully for the fabrication of integrated lens antennas made in alumina in V-band. The role of the matching layers and corrugated surfaces to reduce the influence of multiple internal reflections has been highlighted. In particular we have designed and characterized a broadband synthesized elliptical lens antenna fed by a dielectric-loaded...
We assess the accuracy and relevance of the numerical algorithms based on the principles of geometrical optics (GO) and physical optics (PO) in the analysis of reduced-size homogeneous dielectric lenses prone to behave as open resonators. As a benchmark solution, we use the Muller boundary integral equations (MBIEs) discretized with trigonometric Galerkin scheme that has guaranteed and fast convergence...
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