A fully three-dimensional size-independent parallelepipedal resonator partially filled with DNG metamaterial

摘要

A parallelepipedal cavity resonator consisting of eight equal-size parallelepipeds alternatively filled with doublepositive material and double-negative metamaterial is studied, in the frequency domain. The most general conditions under which resonant fields can exist independently of frequency are determined; these fields contain six independent amplitudes and six independent wavenumbers.