(Invited) Some Techniques to Improve Small Groundplane Printed Monopole Performance [Special Session on Small Antennas Technologies: A European Perspective]

Printed planar monopole antennas are enjoying considerable popularity and publicity to their low-profile, wide bandwidth, quasi-omnidirectional radiation characteristics and their ease of integratability into devices. It is known that classical monopole-type antenna performance is heavily dependent on groundplane effects. Printed monopole antennas show similar dependence, but the groundplane lies in the same plane as the radiator. The impedance bandwidth and radiation properties of a strip monopole have been shown to be heavily dependent on groundplane size. The groundplane (GP) is of primary importance and when miniaturised, the antenna properties change significantly. Techniques to improve the performance of printed antennas on small groundplanes are presented.

http://arrow.dit.ie/engschececon/41/