1. Field of the Invention
The present invention relates an antenna, and, more particularly, to a triple-band antenna for different frequency bands, which is designed for an increased low frequency bandwidth and different intermediate frequency bandwidths.
2. Description of the Related Art
With the rapid growth of wireless communication technologies, standard signal frequency antennas are now insufficient, and so multiple frequency antennas have become the technology of choice. A multiple frequency antenna is usually used in a portable electronic device that supports wireless communication functions, such as a notebook, a mobile phone or a PDA. Since these electronic devices are all very thin and light, it is necessary to have small-volume multiple frequency antennas. However, usually when the antenna has a smaller volume, its reception efficiency is also reduced, and multiple frequency antennas may have narrow frequency bandwidths at different frequency locations. Therefore, the design needs to compromise between volume and reception efficiency. Moreover, the standard multiple frequency antenna with an intermediate frequency band reception ability may also fail to have a broadband response due to the design.
It is therefore desirable to provide a triple-band antenna to mitigate and/or obviate the aforementioned problems.