<p>The disclosed antenna comprises a flat dielectric substrate and a conductive antenna pattern provided on said substrate. The antenna pattern comprises: a tapered section that has first and second tapered regions that decrease in width towards one lengthwise end of the substrate; a pair of extension sections that extend towards one lengthwise end of the substrate from parts of the first and second tapered regions in the tapered section, respectively; and corrugated protrusion sections in which a plurality of protrusions, arranged along the aforementioned long direction, extend from the extension sections towards a region sandwiched by the pair of extension sections.</p>
