OMNI-DIRECTIONAL COLLINEAR MICROSTRIP ANTENNA

摘要

An array (1) of aligned, coplanar patches (2) of stamped or deposited foil, comprised of rectangles connected serpentine lines (3). Each line comprises short elements (4) extending from their patches towards a neighbouring patch. The short elements extend on the centre line C of the array. Next each line has a transverse short element (5), followed by a semi-circular element (6). These are followed by twice as long not-so-short elements (7) crossing the centreline. A further semi-circular element interconnects these elements on the opposite side of the centreline from the two elements (6). The elements in the lines are coplanar with the patches. An end contact (8) is provided. To form the preferred omni-directional dipole antenna, two such arrays (11,12) are provided on opposite sides of a dielectric support (14). They are parallel with each other, with the patches of one array positioned between those of the other.