载波泄漏与I/Q失配矫正技术

doi:10.3969/j.issn.1001-2400.2016.03.026

Abstract

Abstract:

The carrier leakage and I/Q mismatch calibrated technique based on the digital baseband for the direct conversion transmitter is described. The proposed technique only needs a calibration chain to detect mismatches, and then transmits them to the digital baseband, which completes the calibrated task. The proposed method is very simple in reducing die areas and power dissipation. Under TSMC 013μm CMOS technology simulation, the calibrated error of carrier leakage is less than 15％ and the error of I/Q mismatch is less than 65％．The measurement results indicate that I/Q amplitude mismatch is reflected at twice the input frequency. The calibrated chain gain range is 15dB with a 5dB step, and the bandwidth is 20MHz.

Key words: direct conversion architecture, leakage calibration, I/Q mismatch, direct current offset

雷倩倩. Carrier leakage and I/Q mismatch calibrated technique[J].Journal of Xidian University, 2016, 43(3): 149-154.

References

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Carrier leakage and I/Q mismatch calibrated technique

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