| 摘要 |
The present invention employs slot antennas to make UWB antenna (7) and a quarter-wavelength slot UWB antenna for use in mobile terminals. The slot (8) length, which is related to the lower resonant frequency, is about half (for the half-wavelength slot antenna) or quater (for the quater-wavelength slot antenna) of the wavelength, while the higher resonant frequency is related to a dimension of the tuning stub (14). By modifying the dimensions of the tuning stub (14), good impedance matching of the antenna can be achieved according to the desired operating frequency. This invention can be used for mobile terminals to transmit and receive UWB signals in the frequency range of 3.1 GHz-4.9GHz.
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