| 摘要 |
A multi-band antenna is to be electrically connected to a transceiving terminal of a radio frequency circuit by a feeding unit and includes a grounding section, a feed-in section electrically connected to the feeding unit, first and second radiator arms respectively disposed at opposite lateral sides of the feed-in section and electrically connected to the feed-in section, and a first coupling component. The first and second radiator arms are configured to generate first and second resonant modes, respectively. When the multi-band antenna transceives radio frequency signals, the second radiator arm and the first coupling component generate a coupling effect such that the first coupling component generates a third resonant mode. Center frequencies of the first, second, and third resonant modes are different from each other. |
| 主权项 |
1. A multi-band antenna to be electrically connected to a transceiving terminal of a radio frequency circuit by a feeding unit, comprising:
a grounding section including a side edge extending in a first direction; a feed-in section adjacent to said side edge of said grounding section without a shorting path therebetween, said feed-in section being electrically connected to the feeding unit, and said feed-in section being disposed to transceive radio frequency signals to and from the feeding unit and the transceiving terminal of the radio frequency circuit; a first radiator arm disposed at a first lateral side of said feed-in section, said first radiator arm including a free end portion, and a connecting end portion that is electrically connected to said feed-in section, and being configured to generate a first resonant mode; a second radiator arm disposed at a second lateral side of said feed-in section opposite to said first lateral side, said second radiator arm including a free end portion, a connecting end portion that is electrically connected to said feed-in section, and an extension arm portion that extends in the first direction and that connects said free end portion of said second radiator arm to said connecting end portion of said second radiator arm, said second radiator arm being configured to generate a second resonant mode; a first coupling component free of physical contact with said second radiator arm and said feed-in section, and including a grounding arm portion that is disposed at the second lateral side of said feed-in section and that extends from said side edge of said grounding section in a second direction transverse to the first direction, and a coupling arm portion that extends from said grounding arm portion toward said feed-in section in the first direction, that is spaced apart from and disposed side-by-side with said extension arm portion of said second radiator arm, that is free of overlap with said first radiator arm in the second direction and that has a free end which is disposed at the first lateral side with respect to said free end portion of said second radiator arm and which is adjacent to said feed-in section, wherein, when said multi-band antenna transceives radio frequency signals, said extension arm portion of said second radiator arm and said coupling arm portion of said first coupling component generate a coupling effect such that said first coupling component generates a third resonant mode, center frequencies of the first, second, and third resonant modes being different from each other; and a third radiator arm that is disposed at the first lateral side of said feed-in section without intersecting said first radiator arm, and that includes a free end portion and a connecting end portion electrically connected to said feed-in section, said third radiator arm being configured to generate a fourth resonant mode, center frequency of the fourth resonant mode being different from those of the first, second, and third resonant modes. |
