Passive Analog Blocking Filter for Narrowband PLC Systems

This paper delves into the design of passive analog blocking filters to mitigate conductive emissions and address impedance mismatches, which significantly impair the performance of narrowband power line communication systems. These systems have emerged as pivotal data communication technologies for Internet of Things applications, especially within the electricity sector. Experimental analyses centered on scattering parameters and power spectral density demonstrate that the designed passive analog blocking filter is not only straightforward and cost-effective but also performs satisfactorily when compared to another passive analog blocking filter.