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Accurate computation of the radiation from simple antennas using the finite-difference time-domain method

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3 Author(s)
J. G. Maloney ; Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA ; G. S. Smith ; W. R. Scott

Two antennas are considered, a cylindrical monopole and a conical monopole. Both are driven through an image plane from a coaxial transmission line. Each of these antennas corresponds to a well-posed theoretical electromagnetic boundary value problem and a realizable experimental model. These antennas are analyzed by a straightforward application of the finite-difference-time-domain (FD-TD) method. The computed results for these antennas are shown to be in excellent agreement with accurate experimental measurements for both the time domain and the frequency domain. The graphical displays presented for the transient near-zone and far-zone radiation from these antennas provide physical insight into the radiation process

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:38 ,  Issue: 7 )