2010
DOI: 10.1109/tmtt.2010.2049693
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Self-Calibrated Two-Point Delta–Sigma Modulation Technique for RF Transmitters

Abstract: A self-calibrated two-point delta-sigma modulation technique for CMOS RF transmitter is proposed. This calibration technique employs voltage-controlled oscillator (VCO) and delta-sigma modulator input ports in a frequency synthesizer. By monitoring the control voltage of a loop filter, the gain mismatch between two paths can be detected and completely calibrated by modifying the gain of the VCO path. The acceptable timing mismatch between the two paths is also investigated so that the timing can be controlled … Show more

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Cited by 33 publications
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