Abstract
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 language | English |
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Pages (from-to) | 1785-1793 |
Number of pages | 9 |
Journal | IEEE Transactions on Circuits and Systems Part 1: Regular Papers |
Volume | 63 |
Issue number | 11 |
DOIs | |
Publication status | Published - 2016 |
Keywords
- RFI
- Amplifiers
- EMI
- IM2 cancellation
- nonlinear distortion