A new method for the fast estimation of the propagation loss has been applied to predict propagation loss of antennas used in on-body communications. The technique is based on the equivalent source theorem, which states that any antenna can be replaced by a "black box" with surface currents on it. Knowing the propagation loss for an infinitesimal current source, the propagation loss of real antennas can be obtained with only knowledge of their equivalent currents over the surface surrounding the antenna. The solution has been obtained in both time and frequency domain. Providing the availability of libraries including various body-worn antenna parameters, propagating signals and environments, the technique allows an engineer to obtain fast prediction of antenna suitability for specific on-body scenarios. Good agreement between a full conventional FDTD model and measurements with simple antennas such as a dipole, a monopole and a patch antenna with the proposed method is obtained.
|Title of host publication||European Space Agency, (Special Publication) ESA SP|
|Publication status||Published - 1 Oct 2006|