Gridded circular patch antennas

The performance of circular microstrip patch antennas is presented where th e conducting patch and ground plane are constructed from a grid. Improved c ross polarization, mode suppression, and band-width are possible, but are a ccompanied by lower gain and reduced front-to-back ratios. A computer simul ation reveals the current structure. The density and shape of the grid patt ern are important parameters. Such antennas are can be manufactured within glass laminates. (C) 1999 John Wiley & Sons, Inc.