The effect of second-order intermodulation (IM2) distortion produced by out-of-band, high-frequency interference on baseband/IF amplifiers is analyzed using the Volterra series. It is shown that a compensation loop designed to trap nonlinear currents improves the immunity of differential stages to IM2 distortion generated by local feedback. Measurements of a single-ended amplifier example implementing the proposed method demonstrate an IP2 increase of more than 30 dB
Original languageEnglish
Pages (from-to)1785-1793
Number of pages9
JournalIEEE Transactions on Circuits and Systems Part 1: Regular Papers
Issue number11
Publication statusPublished - 2016

    Research areas

  • RFI, Amplifiers, EMI, IM2 cancellation, nonlinear distortion

ID: 11118027