| 摘要 |
Various embodiments of an antenna structure for mobile devices are described. In one or more embodiments a multi-band antenna includes a grounded parasitic element. In some embodiments, a high band arm is provided, and is fed off-center, so that the resonating arms are not symmetrical in length. In some embodiments, a coupled ground resonator 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. Other embodiments are described and claimed. |
| 主权项 |
1. An antenna, comprising:
a first resonating element comprising first, second, third, and fourth sections:
the first section oriented perpendicular to a printed circuit board,the second section comprising a first end and a second end, the first end coupled to the first section, the second section oriented parallel to a top edge of the printed circuit board, the second section longer than each of the first and third linear sections,the third section comprising two ends, the first end coupled to the second end of the second section and the second end coupled to an end of the fourth section, the third section oriented perpendicular to the printed circuit board,the fourth section comprising a free end, the fourth section coupled to the third section and oriented parallel to the top edge of the printed circuit board, the fourth section longer than each of the first, second, and third sections; a ground conductor; a signal feed coupled to the first section of the first resonating element; a second resonating element coupled to the first section of the first resonating element, the second resonating element having a first portion and a second portion, the first portion extending from the first resonating element in a first direction toward a first distal end of the second resonating element and perpendicular to the first section of the first resonating element, the second portion extending from the first resonating element in a second direction opposite the first direction and toward a second distal end of the second resonating element and perpendicular to the first section of the first resonating element, the first portion having a length that is unequal to a length of the second portion; and a third resonating element coupled to the ground conductor and comprising fifth and sixth sections, the fifth section oriented perpendicular to the printed circuit board, the sixth section coupled to a first end of the fifth section and oriented perpendicular to the fifth section. |
