A Two-Stage Approach to Harmonic Rejection Mixing Using Blind Interference Cancellation

A Two-Stage Approach to Harmonic Rejection Mixing Using Blind Interference Cancellation

Current analog harmonic rejection mixers typically provide 30-40 dB of harmonic rejection, which is often not sufficient. We present a mixed analog-digital approach to harmonic rejection mixing that uses a digital interference canceler to reject the strongest interferer. Simulations indicate that, g...

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Veröffentlicht in:IEEE transactions on circuits and systems. II, Express briefs Express briefs, 2008-10, Vol.55 (10), p.966-970
Hauptverfasser: Moseley, N.A., Klumperink, E., Nauta, B.
Format: Artikel
Sprache:eng
Schlagworte:
Adaptive filter
Aggregates
Analog-digital conversion
Baseband
Cancellation
Circuits
CMOS
cognitive radio
Digital
gain and phase mismatch
harmonic rejection mixing
Harmonics
I/Q imbalance
Interference
interference canceling
Interference cancellation
LMS
Noise levels
Power harmonic filters
Radio frequency
Rejection
RF signals
Signal generators
Simulation
software-defined radio
switching mixers
Transmitters
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Beschreibung
Zusammenfassung:Current analog harmonic rejection mixers typically provide 30-40 dB of harmonic rejection, which is often not sufficient. We present a mixed analog-digital approach to harmonic rejection mixing that uses a digital interference canceler to reject the strongest interferer. Simulations indicate that, given a practical RF scenario, the digital canceler is able to improve the signal-to-interference ratio by 30-45 dB.
ISSN:1549-7747
1558-3791
DOI:10.1109/TCSII.2008.926796