On this page we will explain the different gain equations. We took these definitions from Noise in Receiving Systems by Raul Pettai, an entire chapter is devoted to this subject in this book. Thanks, again to Jack K!
Voltage gain:
Current gain:
Note that for voltage and current gain, the conversion to decibels is 20xlog(A). The power gains below are converted by 10xlog(G).
Direct power gain:
Insertion gain:
Transducer gain:
Available gain: