Anntena configurations for wireless devices

A wireless device, comprising:

• a power cord having a connector configured to connect, at a first point, the power cord to a ground plane, a function of the power cord being to provide electrical supply power to the wireless device;
• a ground extension disposed on or within a housing of the wireless device and connected, at a second point, to the ground plane, the second point substantially opposite the first point;
• and
• an antenna feed connected, at a third point, to an antenna element and to the ground plane, a distance between the third point and the first point substantially equal to a distance between the third point and the second point.

A wireless device, comprising:

• a power cord having a connector configured to connect, at a first point, the power cord to a ground plane, a function of the power cord being to provide electrical supply power to the wireless device;
• a ground extension disposed on or within a housing of the wireless device and connected, at a second point, to the ground plane, the second point substantially opposite the first point;
• a holder configured to hold a battery such that, when the battery is held in the holder, a length of the battery is substantially parallel to a plane perpendicular to a line formed by the first point and the second point;
• and
• an antenna feed connected, at a third point, to an antenna element and to the ground plane, a distance between the third point and the first point substantially equal to a distance between the third point and the second point.