Wideband Antenna for Mobile Wireless Terminals

The shorted planar monopole is compared with the simple
wideband square planar monopole. The shorted antenna is optimized for
future wireless networking bands by the choice of planar dimension and
feedgap separation. The antenna offers a return loss greater than 10 dB
from 1.55 to 5.85 GHz. The pattern is shown to be omnidirectional
within the impedance bandwidth. Antenna parameters are compared for
both antennas.