Out-of-Band Immunity to Interference of Single-Ended Baseband Amplifiers Through IM 2 Cancellation

Journal article (2016)

Authors

E.D. Totev Philips Research
C. Huang Brightsight BV
L.C.N. de Vreede Electronics - EEMCS
J..R.. Long University of Waterloo
W.A. Serdijn Bio-Electronics - EEMCS
W. A. Serdijn Bio-Electronics - EEMCS
Wouter Serdijn Bio-Electronics - EEMCS
Wouter A. Serdijn Bio-Electronics - EEMCS
WA Serdijn Bio-Electronics - EEMCS
C.J.M. Verhoeven Electronics - EEMCS
Research Group
Bio-Electronics (EEMCS) (TU Delft)
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Published Date

2016

Language

English

Reuse Rights

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Bio-Electronics

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