CPC H01Q 1/405 (2013.01) [H01Q 1/243 (2013.01); H01Q 1/38 (2013.01); H01Q 9/0442 (2013.01)] | 20 Claims |
1. A mobile phone comprising:
electronic circuitry;
a metal case housing the electronic circuitry and forming a portion of an exterior surface of the mobile phone; and
an antenna system including a patch antenna element formed in the metal case and surrounded by a metal oxide region, a first tuning conductor operable to load the patch antenna element, and a first switch electrically connected in series between the first tuning conductor and a ground voltage, at least a portion of the first tuning conductor underlying the patch antenna element.
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