Electronic device antennas having distributed capacitances

An electronic device comprising:

• a housing having peripheral conductive structures;
• an antenna resonating element arm for an antenna, wherein the antenna resonating element arm is formed form the peripheral conductive structures;
• an antenna ground for the antenna, wherein the antenna ground comprises a first conductive structure that is separated from the antenna resonating element arm by a first distance and a second conductive structure that is electrically connected to the first conductive structure and separated from the antenna resonating element arm by a second distance that is less than the first distance;
• an antenna feed for the antenna, wherein the antenna feed has a first feed terminal coupled to the antenna resonating element arm and a second feed terminal coupled to the antenna ground;
• and
• a distributed impedance matching capacitor for the antenna that is formed from the second conductive structure and the antenna resonating element arm.

An electronic device comprising:

• a housing having peripheral conductive structures and a planar conductive layer extending between first and second segments of the peripheral conductive structures;
• a first dielectric-filled gap in the peripheral conductive structures that separates the first segment from a third segment of the peripheral conductive structures;
• a second dielectric-filled gap in the peripheral conductive structures that separates the second segment from the third segment;
• an antenna resonating element formed from at least the third segment of the peripheral conductive structures;
• a conductive component frame;
• and
• an antenna ground formed from at least the planar conductive layer, the first and second segments of the peripheral conductive structures, and the conductive component frame, wherein the planar conductive layer is separated from the antenna resonating element by a first distance and the conductive component frame is separated from the antenna resonating element by a second distance that is less than the first distance.