AN ULTRA WIDEBAND PRINTED MONOPOLE ANTENNA USING MODIFIED GROUND PLANE

摘要

The present invention second relates to a monopole antenna showing a wide band characteristics, in particular with the printed power supply line to the straight line on the substrate, a circular or oval shape formed on the feed line ends radiation device, the radiation to the radiation elements and the feed line either side or rear omnidirectional conical beam similar having at least one ultra-wideband characteristics, with a typical monopole antenna: the device around this consists of a ground plane is formed so that the taper to the curved toward the transmission line by changing the impedance gradually ratio of 30 of the lower limit frequency and the upper frequency suited UWB printer using a modified ground plane showing a radiation pattern and provide a monopole antenna.