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Electrical and electronic engineering
A semi-planar miniaturized antenna which operates over the FCC allocated UWB spectrum is presented. The small antenna comprises a folded conducting element connected to a printed section. Several solutions are introduced which create different current paths increasing the effective dimensions of the antenna. The antenna is examined for the stand-alone case and for the antenna mounted in various locations on a larger handset-type groundplane. The impedance and radiation characteristics show a relative independence of the groundplane size and the antenna location on it. The proposed antenna is a valuable candidate for handset applications due to its compactness. The proposed antenna may be employed in UWB communications systems and exhibits quasi-omnidirectional radiation patterns over the full impedance bandwidth.
Ruvio, G., Ammann, M.: A novel wideband semi-planar miniaturized antenna. IEEE Transactions on Antennas and Propagation, Vol.55, issue 10, pp.2679-2685. 2007.