Abstract
The inphase/quadraure signal processing vastly utilized in present communication transceiver faces a common issue of amplitude matching and phase matching in the inphase and the quadrature branches, and this I/Q imbalance is one of the performance bottlenecks in a transceiver. The gain and phase mismatches between inphase signal and quadrature signal degrade the signal-to-noise ratio, therefore raising the bit error rate. Thus, it is necessary to establish an auto-calibration mechanism in a transceiver, reducing the gain imbalance and phase error contributed by the I and Q paths. This chapter will describe the modulator auto-calibration mechanism first and the calibration mechanism in a demodulator will be showed in next chapter.
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© 2006 Springer
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Chen, SJ., Hsieh, YH. (2006). AN AUTO-I/Q CALIBRATED MODULATOR. In: IQ CALIBRATION TECHNIQUES FOR CMOS RADIO TRANSCEIVERS. Analog Circuits and Signal Processing. Springer, Dordrecht. https://doi.org/10.1007/1-4020-5083-6_4
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DOI: https://doi.org/10.1007/1-4020-5083-6_4
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-5082-4
Online ISBN: 978-1-4020-5083-1
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