Investigation of a Square-Mesh Wire-Grid Modified-Luneburg-Lens Antenna
- 1 September 1961
- report
- Published by Defense Technical Information Center (DTIC)
Abstract
Research concerns the design, construction and measured performance of an experimental square mesh wire-grid modified Luneburg lens antenna. This novel antenna shows great promise for many applications. The lens part consists of a ground plane above which is placed a circular square-mesh wire-grid whose distance from the ground plane is varied to achieve a focusing effect. The lens is loaded with a radial horn to obtain a high radiation efficiency. The lens antenna was tested with an omnidirectional feed and with a directional feed in a bandwidth of more than 2:1. The measured radiation patterns agree well with the theoretical patterns. With a simple directional feed, side-lobe levels of below -20 db were obtained.Keywords
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