| 摘要 |
A multi-band antenna for use in a portable telecommunication apparatus has a pattern of thin conductive material and is adapted to operate in at least two, preferably at least three, frequency bands, such as 900 MHz, 1800 MHz and 1900 MHz. A first portion of conductive material has a first end, which is connected to radio circuitry in the portable telecommunication apparatus. It also has a second end. A second portion of conductive material has a first end, which in connected to the second end of the first portion. The second portion has a non-linear extension and is narrower than the first portion. A third portion of conductive material is connected to the second portion. The third portion is wider than the second portion and provides capacitive loading of the antenna. |
