A novel method for frequency discriminators construction based on balanced gray code

This paper discusses the use of multi-band-stop filters for application as frequency discriminators. A novel design method is presented (multi-band-stop filters based on the balanced gray code) and compared to the straightforward method (traditional gray code). The novel method increases individual rejected bands fractional bandwidth, while assuring that each filter possess the same amount of rejected sub-bands. For a frequency span, it is also shown that the sub-bands fractional bandwidth relative standard deviation is reduced.