摘要: The Maxwell equations are transformed into generalized telegraphist equations, a set of linear differential equations equal to the set of equations describing the currents and voltages in mutually coupled transmission lines or in ... 展开 The Maxwell equations are transformed into generalized telegraphist equations, a set of linear differential equations equal to the set of equations describing the currents and voltages in mutually coupled transmission lines or in mutually coupled tuned LC-circuits. Each mode can then be identified with the current in one of the circuits. Power can be transferred from one circuit to another with different resonant frequency by reversing the sign of the coupling. In the microwave analogon this corresponds to a change of curvature along the axis of the guide which leads to a wiggling axis. In order to keep reflections low, the curvature should not change abruptly. This also simplifies the calculations. For practical reasons both ends of the converter should have the same direction and all wiggles should have the same form. 收起