2022-09-02 17:27 Status: Tags: # insertion loss Loss of signal power resulting from insertion of a device in a transmission line (in dB). Insertion loss in decibels is given by, ![Maths](https://wikimedia.org/api/rest_v1/media/math/render/svg/752951c929cf059b7060354772c2ba9dc4e89035) Can be measured for [electronic filter](electronic%20filter.md)s: ${\displaystyle {\mbox{Insertion loss (dB)}}=10\log _{10}{\frac {\left\vert V_{1}\right\vert ^{2}}{\left\vert V_{2}\right\vert ^{2}}}=20\log _{10}{\frac {\left\vert V_{1}\right\vert }{\left\vert V_{2}\right\vert }}}$ and for [scattering parameter](scattering%20parameter.md)s: ![IL=-20\log _{{10}}\left|S_{{21}}\right|\,{\text{dB}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/c53add1c9488a2bc82fee57ff4673440eaf6de35) [^1] --- # References [^1]: [Insertion loss - Wikipedia](https://en.wikipedia.org/wiki/Insertion_loss)