Linear Phase Sharp Transition BPF to Detect Noninvasive Maternal and Fetal Heart Rate

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">LPST filter (filter order (<i>N</i>) = 1001)</td><td class="align_center">Transition bandwidth (<i>ω</i><sub>p1</sub>–<i>ω</i><sub>s1</sub>) rad/s</td><td class="align_center">Transition bandwidth (<i>ω</i><sub>s2</sub>–<i>ω</i><sub>p2</sub>) rad/s</td><td class="align_center">Max. passband loss (dB)</td><td class="align_center">Min. stopband attenuation (dB)</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">Design specifications</td><td class="align_center">2<i>π</i></td><td class="align_center">2<i>π</i></td><td class="align_center">±0.873</td><td class="align_center">40</td></tr><tr><td class="align_left">Measured specifications</td><td class="align_center">8.54<i>π</i></td><td class="align_center">7.78<i>π</i></td><td class="align_center">+0.47, −0.13</td><td class="align_center">40</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Band-pass LPST filter specifications of transition bandwidth, passband ripple, and stopband attenuation using type 4 fiduciary edges along with measured magnitude response values.</div>

Journal of Healthcare Engineering

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Table 2

Table 2: Linear Phase Sharp Transition BPF to Detect Noninvasive Maternal and Fetal Heart Rate 