MULTIBAND ANTENNA WITH GROUNDED ELEMENT

摘要

Various embodiments of an antenna structure (104) for mobile devices (100) are described. In one or more embodiments a multi-band antenna (104) includes a grounded parasitic element (118, 218). In some embodiments, a high band arm is provided (112), and is fed off-center, so that the resonating arms are not symmetrical in length. In some embodiments, a coupled ground resonator (114) is included to add a differential resonating mode. A ground leg may be included to offer facilitate impedance and inductance matching. The combination of these structures creates four distinct resonance modes for the high band, which creases a wide effective bandwidth for the disclosed antenna (104). Other embodiments are described and claimed.