Abstract
Ultra Wideband applications in communication and Radar have stimulated research for several 10 years. The possibilities for high resolution and high data rates have been the driving visions. Especially the military research added the feature of low probability of detection. Since the United States Federal Communication Commission (FCC) has opened the spectrum from 3.1 to 10.6 GHz for unlicensed, low power applications a new dimension is added to ultra wideband research. This papers focuses on state of the art research in ultra wideband antennas. Especially the Vivaldi antenna and the logarithmic periodic dipole array (LPDA) of small size for applications in communications are treated. It is shown that both can handle very well the more than 100 % relative bandwidth. While the Vivaldi antenna shows low distortion and only small ringing, the logarithmic periodic dipole array exhibits high distortion, ringing and higher order modes of radiation. This behavior has to be optimized together with the modulation schemes for ultra wideband communications.
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Sörgel, W., Waldschmidt, C., Wiesbeck, W. (2004). Electromagnetic Characterization of Ultra Wideband Antennas. In: Pinto, I.M., Galdi, V., Felsen, L.B. (eds) Electromagnetics in a Complex World. Springer Proceedings in Physics, vol 96. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-18596-0_22
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DOI: https://doi.org/10.1007/978-3-642-18596-0_22
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