Antenna structures of electronic devices and methods of operating the electronic devices with the antenna structures are described. One antenna structure includes a ground plane, a radio frequency (RF) feed, a first antenna element coupled to the RF feed, a second antenna element coupled to the RF feed and a third antenna element coupled to the ground plane at a grounding point. The third antenna element is at least partially disposed between the first and second antenna elements to form a first coupling between the first antenna element and the third antenna element, a second coupling between the second antenna element and the third antenna element and a third coupling between the second antenna element and the third antenna element.