{http://www.hyperlinktech.com/web/copyrighted_images/hg2409p_thumb.jpg patch } Patch [Antenna] are most similar to PanelAntenna, but aren't so expensive They are probably the most stealth antenna. Typical BeamWidth range is 30-180 degrees. Typical gain ranges are 8dbi-14dbi (http://www.rc-cam.com/gp_patch.htm Here) is a simple [HomeBrew] design.