Feedforward Interference Cancellation in Radio Receiver Front-Ends

Feedforward Interference Cancellation in Radio Receiver Front-Ends

An interference cancellation technique is described for improving the dynamic range of receivers. A feedforward approach is used to attenuate large interferers before the down-conversion mixer in a receiver. This is accomplished with no measurable impact on the in-band noise performance. Techniques...

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Veröffentlicht in:IEEE transactions on circuits and systems. 2, Analog and digital signal processing Analog and digital signal processing, 2007-10, Vol.54 (10), p.902-906
Hauptverfasser: Ayazian, S., Gharpurey, R.
Format: Artikel
Sprache:eng
Schlagworte:
Attenuation
Bands
Baseband
Cancellation
CMOS technology
Dynamic range
Dynamical systems
Feedforward
Feedforward cancellation
front-end
Interference
Interference cancellation
Linearity
Low-noise amplifiers
low-noise amplifiers (LNAs) and mixers
narrow-band receivers
Narrowband
Noise cancellation
Radio frequency
Receivers
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Beschreibung
Zusammenfassung:An interference cancellation technique is described for improving the dynamic range of receivers. A feedforward approach is used to attenuate large interferers before the down-conversion mixer in a receiver. This is accomplished with no measurable impact on the in-band noise performance. Techniques to cancel interference within a narrowband and also in multiple bands are described. Simulation results and measurements from a discrete prototype system are used to validate the approach.
ISSN:1549-7747
1057-7130
1558-3791
DOI:10.1109/TCSII.2007.902218