A Study of NON-reciprocal Spatial Band Pass Filter

In this paper, a NON-reciprocal spatial bandpass filter (BPF) is proposed. That contains magnetized ferrites like conventional isolators and has different transmission coefficient depending on the incident direction of the plane wave. Depending on the incident direction of the incident wave, the transition coefficients were -5.8 dB and -11.3 dB, and the power ratio was approximately 3.5 times.