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This paper presents the analysis of simple, compact, CPW- fed cross(flower) shaped monopole antenna with -10 dB return loss (VSWR<2),band width from 5.1 GHz to 13 GHz for 5-GHz WLAN and higher band UWB applications. The antenna is designed on an inexpensive FR4-expoxy substrate with dielectric constante ??r = 4.4 and with a size of 30 mm ?? 20 mm ?? 1.5 mm.