An experimental verification of the excitation power of a transmission line with a shunt load

The excitation power of a scattering body is governed, in general, by the forward-scattering theorem. In this paper, the theorem is reconfirmed by simply applying Poynting´s theorem to a loaded transmission line. It is shown that the excitation power is determined by the interaction of the incident voltage with the forward-scattered current. For some special cases, the backward-scattering formula can yield the same result. A transmission line with a shunt load is one of the examples where the excitation power can be expressed as the real part of the product of the incident voltage and the conjugate of the backward-scattered current. In this work, an experiment has been performed to verify the above results.