A half-wave printed "patch" antenna includes, symmetrically with respect to
a plane of symmetry of the antenna perpendicular to faces of the antenna,
a dielectric substrate and two conductive layers on respective faces of
the substrate. One face of the substrate includes a raised portion
extending lengthwise of the plane of symmetry and one of the conductive
layers extends over and along said raised portion. Consequently, the
antenna has a small size, combined with a more open radiation diagram. The
antenna includes only one raised portion for linear polarization, or two
raised portions or a raised portion with axial symmetry for crossed
polarizations.
