Integrated Bluetooth/IMT-E and UWB Planar Antenna Using Scrlh Resonator to Reject WLAN and WiMAX Interferences

A novel printed monopole antenna covering 2.4{2.484GHz (Bluetooth), 2.5{2.69GHz (IMT-E) and 3.1{10.6GHz (UWB) fre- quency bands is presented. The entire frequency bands are obtained by a modifled U-shaped radiator and a modifled ground plane. To prevent possible interference between UWB systems and other existing wireless systems such as WLAN and WiMAX, a SCRLH resonator structure is placed next to the feed line. Characteristics of the Bluetooth and IMT-E bands are further enhanced by two quarter-wavelength strips added on each side of the radiator. The proposed antenna can be easily printed on a 1.6-mm-thick FR4 substrate with dimensions of 30 £ 41mm 2 . Simulation and experimental results show that the an- tenna yields an impedance bandwidth of 2.3{2.8 and 3{12GHz with i10dB re∞ection coe-cient, except for the dual notched bands of 3.2{ 3.6 for WiMAX and 4.9{6.1GHz for WLAN. The electrical character- istics in frequency and time domain show suitability of this antenna for use in UWB systems.

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