A design of integrated GSM and Bluetooth ultra wide band printed monopole antenna (UWB) for wireless applications

A compact microstrip feed triple band circular monopole antenna operating over GSM (1.78-1.82 GHz), Bluetooth (2.4-2.48 GHz) and Ultra wideband (UWB: 3.1-10.6GHz) frequency bands is designed and investigated for wireless applications. The UWB frequency operation is achieved by a modified circular radiating monopole with destructive ground plane. Further, by slotting the central portion of the radiating patch and then etching a half wavelength circular arc from the radiating patch a dual band frequency operation over Bluetooth and UWB band is achieved. The triple band frequency operation is realized by embedding quarter wavelength parasitic element/strip resonating at 1.8 GHz placed at the slotted central position in the radiating patch. The proposed antenna is simulated using electromagnetic simulation software CAD FEKO suite (6.3). The proposed antenna is realized on FR-4 dielectric substrate having a dielectric constant of 4.4 and loss tangent of 0.02. The antenna covers the three bands of operation i.e. GSM (1800MHz), Bluetooth (2.4-2.48GHz) and UWB (3.1-10.6 GHz) with reflection coefficient <; -10dB. The antenna also exhibits stable radiation patterns for the entire UWB & aforementioned integrated lower frequency bands.