Abstract
In this study, a compact dual-band grounded coplanar waveguide fed printed planar monopole antenna (GCPW-PPMA) is designed and realized for Bluetooth, WLAN and WiMAX applications. Antenna is designed in two stages and a low-cost FR4 substrate is used. Firstly, a GCPW fed trapezoidal shape printed monopole radiator patch is designed at 5.8 GHz band and its bandwidth is improved by employing an inset. In the second phase, two different slot geometries are employed to excite 2.45 GHz band. Slot loadings, radiating patch and inset feeding are optimized and the dimensions of the resulting antenna are obtained as 25 mm × 27.5 mm. Simulated and measured results are in good agreement, and measured operating bands of the proposed antenna are 2.40 GHz-2.52 GHz and 3.76 GHz–5.875 GHz for S 11 < −10 dB. The proposed GCPW-PPMA has dipole like radiation patterns in the operating bands. Its measured realized gains are 1dB at 2.45 GHz and 2.5 dB at 5.8 GHz. The proposed antenna is suitable for space and weight limited portable devices.
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