Linear Operational analog Waveform phase modulation calculation Differential Substrate Arithmetic

https://en.wikipedia.org/wiki/List_of_LM-series_integrated_circuits

https://www.geeksforgeeks.org/analog-to-analog-conversion-modulation/ 

https://www.neophotonics.com/what-is-phase-modulation/

https://www.monolithicpower.com/en/power-factor-correction