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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Bibliographic Details
Published inIEEE transactions on circuits and systems. II, Express briefs Vol. 55; no. 10; pp. 966 - 970
Main Authors Moseley, N.A., Klumperink, E., Nauta, B.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.10.2008
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
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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Summary: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.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1549-7747
1558-3791
DOI:10.1109/TCSII.2008.926796