Dipole antennas on photonic band-gap crystals—Experiment and simulation

The radiation patterns of dipole antennas on three-dimensional photonic crystal substrates have been measured and calculated with the finite-difference-time-domain method. The photonic band-gap crystal behaves as a perfectly reflecting substrate, and all the dipole power is radiated into the air side when driven at frequencies in the stop band. The radiation pattern is found for dfferent positions and orientations of the dipole antenna. Antenna configurations with desirable patterns are identified. © 1997 John Wiley & Sons, Inc. Microwave Opt Technol Lett 15: 153–158, 1997.