ABSTRACT
This chapter begins with the history and development of microstrip patch antennas (MPAs). Then, mode gauged design approach based upon gauged magnetic dipole is advanced to multi-mode resonant, Pacman-shaped MPAs with distinctive performance: Compact dual-mode wideband MPA is studied at first. Then, high gain MPA is studied and employed to construct linear array antennas, thus it leads to 2 dB gain increment superior to conventional array antennas. Next, tilted beam circularly polarized MPA is designed by simultaneously utilized two resonant, non-degenerated modes within an asymmetric circular sector radiator. Finally, triple-mode resonant, wideband null frequency scanning MPA is designed as is laid down by a long, double-wavelength gauged magnetic dipole. As can be seen, both the usable modes and radiation dispersion of MPAs can be felicitously regulated by the gauged magnetic dipole.
