Design and Optimization of Integrated Bluetooth and UWB Antenna With Dual Band-Notched Functions

A compact microstrip-fed printed planar integrated Bluetooth and ultra wideband (UWB) monopole antenna with dual band-notched characteristics in the 3.5 GHz WiMAX and 5.2/5.8GHz WLAN band is presented. The proposed antenna design consists of the semicircular ring patch and partial ground plane. The extra band (2.33-2.5GHz)for Bluetooth is obtained by adding the T-shaped strip at the top of the patch. Additionally, two L-shaped arc slots in patch and two U-shaped circular slots in partial groundplane are etched to reject the WiMAX and WLAN bands. The numerical and experimental results show that the proposed antenna has an impedance bandwidth of VSWR ≤ 2 from 2.33 GHz to 2.5 GHz for Bluetooth band and 3.04 GHz to 10.8 GHz for UWB band except the notch band frequencies 3.3- 4.1 GHz for WiMAX and 5 – 5.9 GHz for WLAN band.