Controlling Pulsed EM Scattering of a One‐Port Receiving Antenna

A time domain compensation theorem concerning electromagnetic (EM) scattering of a one‐port antenna system is derived with the aid of the reciprocity theorem of the time convolution type. The theorem describes the impact of a change in the antenna load on receiving antenna scattering properties. The compensation theorem is next applied to express the change of the copolarized backscattered far‐field amplitude in terms of (local) Kirchhoff circuit quantities excited in the corresponding receiving scenarios. Applications of the results can be found in controlling the pulsed echo of a receiving antenna as well as in related theoretical aspects of receiving antenna scattering theory. Illustrative numerical results are given for both linear and nonlinear antenna loads. Key Points Scattering antenna time domain compensation theorems are derived in general form Pulsed backscattered amplitude is expressed in terms of local Kirchhoff quantities Illustrative numerical examples involve both linear and nonlinear antenna loads