A New Small and Low-cost Wideband PIFA with Corrugations Based on Digital Dividend

A broadband and low cost planar inverted F antenna (PIFA) with corrugations suitable for applications in the frequency gap of Digital Dividend (698{862MHz) is designed in this paper. Present mobile terminal antennas are expected to show increased bandwidth as well as low-loss impedance matching while maintaining low-proflle geometry. A custom Genetic Algorithm (GA) is used in order to optimize the proposed antenna's parameters regarding res- onant frequency and radiation pattern. The optimized antenna exhibits small size (dimensions 13:6 £ 12:1cm), satisfactory directivity for mobile terminal applications of 3dBi over an oper- ation bandwidth of 180MHz around the central frequency of 790MHz. Simulation results and parameters range are exposed below followed by the according radiation pattern and variation of the simulated VSWR.

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