Electronic Device Antenna With Multiple Feeds for Covering Three Communications Bands

摘要

Electronic devices may be provided that include radio-frequency transceiver circuitry and antennas. An antenna may be formed from an antenna resonating element and an antenna ground. The antenna resonating element may have a shorter portion that resonates at higher communications band frequencies and a longer portion that resonates at lower communications band frequencies. An extended portion of the antenna ground may form an inverted-F antenna resonating element portion of the antenna resonating element. The antenna resonating element may be formed from a peripheral conductive electronic device housing structure that is separated from the antenna ground by an opening. A first antenna feed may be coupled between the peripheral conductive electronic device housing structures and the antenna ground across the opening. A second antenna feed may be coupled to the inverted-F antenna resonating element portion of the antenna resonating element.

主权项

1. An electronic device, comprising:
control circuitry; and an antenna that is tuned by the control circuitry, wherein the antenna has an inverted-F antenna resonating element and an antenna ground that are separated by a gap, wherein the antenna has a first antenna feed coupled across the gap, wherein the inverted-F antenna resonating element has conductive structures configured to form an additional inverted-F antenna resonating element portion of the inverted-F antenna resonating element, wherein the additional inverted-F antenna resonating element portion has a resonating element arm formed from the conductive structures that is separated from the antenna ground by an opening and has a return path formed from a portion of the conductive structures, and wherein the antenna has a second antenna feed coupled across the opening.