%0 Journal Article %T Design Aspects of Printed Monopole Antennas for Ultra-Wide Band Applications %A K. P. Ray %J International Journal of Antennas and Propagation %D 2008 %I Hindawi Publishing Corporation %R 10.1155/2008/713858 %X This paper presents the design equations for lower band-edge frequency for all the regular shapes of printed monopole antennas with various feed positions. The length of the feed transmission line is a critical design parameter of these monopole antennas. Design curves for the length of the feed transmission line for various lower band-edge frequencies for all these regular shaped monopoles have been generated. A systematic study has been presented to explain the ultra-wide bandwidth obtained from these antennas with an example of elliptical monopole antenna. %U http://www.hindawi.com/journals/ijap/2008/713858/