Single feed passive antenna for a metal back cover

摘要

Antenna structures and methods of operating the same are described. One apparatus includes a metal cover having a first corner ground element, a second corner ground element, a first strip element, a second strip element, a radio frequency (RF) feed, and a RF circuit. The first strip element is physically separated from the first corner ground element by a first cutout in the metal cover. The first strip element is physically separated from the second strip element by a second cutout in the metal cover. The second strip element is physically separated from the second corner ground element by a third cutout in the metal cover. The RF circuitry is coupled to the RF feed, where the RF circuitry is operable to cause the first corner ground element and the first strip element as well as the second corner ground element and the second strip element to radiate electromagnetic energy.

主权项

1. An electronic device comprising:
radio frequency (RF) circuitry comprising an RF feed; a metal cover comprising a first strip element, a second strip element, a first corner ground element, and a second corner ground element are each disposed at a periphery of the metal cover, wherein:
the first strip element is physically separated from the first corner ground element by a first cutout in the metal cover,the second strip element is physically separated from the first strip element by a second cutout in the metal cover, andthe second corner ground element is physically separated from the second strip element by a third cutout in the metal cover, wherein the first corner ground element and the second corner ground element extend from a ground plane; an antenna structure coupled to the RF feed with a feed line, the antenna structure comprising the ground plane, a feed point, the first strip element, the second strip element, the first corner ground element, and the second corner ground element, wherein:
the first strip element is coupled to the feed line at the feed point located at a first side of the first strip element;the first strip element is coupled to the first corner ground element at a first end and is coupled to the second strip element at a second end; andthe second strip element is coupled to the second corner ground element.