The Accidental Engineer

sometimes informative, sometimes funny, always interesting

How wide can you go?

We often get asked about how wide a filter’s bandwidth can be made.  Typical filter technologies are limited to approximately 75% BW or so.  For applications where ultra-wide, multi-octave bandwidths are required, you would need more than an ordinary filter.  The best filter choice for bandwidths in the 150% range ...

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