Lens Antennas with Flat-Top Radiation Patterns: Benchmark of Beam Shaping Techniques at the Feed Array Level and Lens Shape Level

Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany

Proceedings: EuCAP 2009

Pages: 4Language: englishTyp: PDF

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Nguyen, Ngoc Tinh; Sauleau, Ronan; Coq, Laurent Le (IETR, UMR CNRS 6164, University of Rennes 1, 263, UMR CNRS 6164, Avenue du Général Leclerc, 35042 Rennes Cedex, France)

The objective of this paper is to investigate the feasibility of shaping lens radiation patterns without shaping the lens profile as traditionally done. The proposed solution is based on focal array fed lens antennas that consist of standard extended hemispherical integrated lenses illuminated by focal phased sub-arrays. To demonstrate the feasibility of this concept, beam shaping techniques at the lens profile level and feed array level are implemented and compared numerically and experimentally through the design of lenses with flat-top beams at 28 GHz.