<a href="https://en.wikipedia.org/wiki/Constant_k" class="extiw" title="en:Constant k">Constant k</a> <a href="https://en.wikipedia.org/wiki/band-pass_filter" class="extiw" title="en:band-pass filter">band-pass filter</a> L half-section. For constant-k operation, <i>L</i><sub>1</sub> = <i>C</i><sub>2</sub><i>k</i><sup>2</sup> and <i>L</i><sub>2</sub> = <i>C</i><sub>1</sub><i>k</i><sup>2</sup>
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