I have a very strange problem. I wish to design a bandpass filter with a lower cutoff of .001 Hz and an upper cutoff of 5 kHz.
To satisfy this large bandwidth requirement and extremely small low frequency cutoff, the circuit needs to be built for a very low center frequency. As a result, the quality factor, and hence gain at the center frequency is vanishingly small. To restore the signal passed by such a filter would require something absurd like ~1e24 subsequency amplification.
Any recommendations on filter topologies, filter order, what else I could try would be appreciated.
To satisfy this large bandwidth requirement and extremely small low frequency cutoff, the circuit needs to be built for a very low center frequency. As a result, the quality factor, and hence gain at the center frequency is vanishingly small. To restore the signal passed by such a filter would require something absurd like ~1e24 subsequency amplification.
Any recommendations on filter topologies, filter order, what else I could try would be appreciated.