Electromagnetically coupled microstrip antennas having feeding patches capacitively coupled to feedlines

摘要

A microstrip antenna array having broadband linear polarization, and circular polarization with high polarization purity, feedlines (2) of the array being capacitively coupled to feeding patches (3) at a single feedpoint or at multiple feedpoints, the feeding patches in turn being electromagnetically coupled to corresponding radiating patches (4). The contactless coupling enables simple, inexpensive multilayer manufacture.