Microstrip antenna with improved low angle performance

摘要

The invention comprises a microstrip antenna (100) capable of providing high radiation gain both at the zenith and at low angles. The microstrip antenna (100) includes a raised ground plane (24) disposed on a flat ground plane (10), a dielectric substrate (11) disposed on the raised ground plane (24), a patch (12) disposed on the dielectric substrate (11), a feed pin (14)disposed through the patch (12), the dielectric substrate (11) and the raised ground plane (24), and a dielectric lens (20) for encapsulating at least a portion of the patch (12) to increase the radiation gain at low angles.