How is the return loss of a lumped element filter determined?
How is the return loss of a lumped element filter determined? Again, the return loss of 10 dB is a function of the specified ripple of 0.5 dB. Which filter you would pick must be determined by how much rejection you need at specific frequencies. One other "curiosity" about lumped element Chebyshev bandpass filters is that the lower skirt is steeper than the upper skirt. How much return loss does a 0.5 dB ripple filter have? For 0.5 dB ripple, you get about 10 dB return loss. The other thing to note is that the skirt on the N=5 filter...