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A full-wave numerical study of 2-D models of dual-reflector omnidirectional ADE (axially-displaced ellipse subreflector and parabolic main reflector) and PACO (parabolic subreflector and conical/corner reflector) antennas is performed in the E-polarization case. The analysis is based on the recently developed method of discrete singularities (MDS) which uses coupled singular electric-field integral...
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...
The performances of focal array fed lenses have been studied for beam diversity applications. We have shown that optimizing the feed sub-arrays enables one to achieve very attractive radiation characteristics without using sophisticated techniques based on shape optimization. A specific and powerful design methodology based on FDTD and GA has been proposed to synthesize reconfigurable integrated lens...
A new configuration of extended hemispherical lenses with an air cavity above the feed region has been proposed. This technique enables one to achieve the same beam patterns as synthesized elliptical lenses, but with smaller height (10.1%), dielectric loss (15.7%) and weight (13.6%). Various lens configurations fed by printed patch antennas have been designed and compared in Ka-band.
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