Radiation from a transmission line carrying current of an arbitrary waveform

The radiation from a finite-length transmission line in which a current of arbitrary waveform is flowing is examined. This phenomenon can be considered to be the opposite of the coupling of a wave of an arbitrary waveform to the line. By representing both phenomena in the form of a three-pair-terminal network, the radiation problem can be examined using the circuit concept. An expression for the radiated electric field is obtained in terms of analytical functions. These functions suggest a radiation mechanism. Elements of the matrix describing the network in the Laplace domain can be determined from the coupling result.<>