Slotted-waveguide antennas with oinni-directional radiation patterns are an
alyzed using the method of moments and a full-wall electromagnetic simulato
r based on the finite-difference time-domain (FDTD) method. The resonant an
d radiation properties of the antennas have been examined. The simulated re
sults are shown to be in good agreement with those obtained from measuremen
ts. (C) 2001 John Wiley & Sons, Inc.