Analyzed of Yagi Antenna by the Theory of Maxwellian Circuits

摘要

In this paper, the theory of Maxwellian Circuits(MC) is applied to compute the Yagi antennas, the geometry of the Yagi antennas are formulated by MC in detail. Combining with Hallen's Equation and Lorenz Gauge, the voltage cancellation technique is used to transform the expression of voltage into analytic form. The technique is verified by calculating the current distributions and the radiation patterns of a 3-element Yagi antenna. The same antennas are also computed by the Method of Moments(MoM). The good agreements of the two results show that the theory of Maxwellian circuits is valid and it is as accurate as MoM in investigating disconnected antennas or multibody scattering.