Characterization of a novel passive RF filter for frequencies of 4-225 MHz

摘要

The design and experimental characterization of a passive RF (4-225 MHz) filter pertinent to industrial and military aviation environments is presented. The filter utilizes three different low-pass stages and a simple DC discriminating circuit. A detailed theoretical analysis (lumped parameter modeling) of the filter's frequency response is provided. Even though it is not part of the initial design criteria, the filter also effectively blocks both out-of-band high-frequency (f<225 MHz) and low-frequency (f<4 MHz) harmonics.