US Patent 7821460 Tunable patch antenna of planar construction

An improved tunable antenna of planar construction is distinguished by the following features:in plan view perpendicular to the effective surface (7), the electrically conductive structure (13, 113) completely or partially covers the effective surface (7),the electrically conductive structure (13, 113) is coupled and/or connected galvanically or capacitively or serially and/or with interposition with at least one electrical component (125) with the ground surface (3) and/or a chassis (B) located on a potential or ground.