The problems of reducing the integral radiation level of a monopole source by an active method using a complex spherical emitter and a passive method using a simple absorber (matched sphere) are considered. A comparison is made of the efficiency of the active method using a procedure that allows obtaining a stable solution with respect to random errors in the elements of the active system and the passive compensation method. Demonstrated that for small error values and small sphere sizes, the active compensation method is more efficient, while for large sphere sizes, the passive method is more efficient.
Fiks et al. (Wed,) studied this question.