Matched load truncation for feedline of patch antennas in the FDTD method

In this paper, a matched load termination of a finite-length line is used t o represent an infinite feedline structure in FDTD simulations. A generator with an internal resistor-which is matched to the input port-is employed t o excite the feedline, with a View to achieving a low reflection at the tru ncation point. A patch antenna, whose feedline is truncated in this manner, is used as an example to illustrate the usefulness of the proposed techniq ue. (C) 2001 John Wiley & Sons, Inc.In this paper, a matched load terminati on of a finite-length line is used to represent an infinite feedline struct ure in FDTD simulations. A generator with an internal resistor-which is mat ched to the input port-is employed to excite the feedline, with a View to a chieving a low reflection at the truncation point. A patch antenna, whose f eedline is truncated in this manner, is used as an example to illustrate th e usefulness of the proposed technique. (C) 2001 John Wiley & Sons, Inc.