IQ Calibration Techniques for CMOS Radio Transceivers

Download or read book IQ Calibration Techniques for CMOS Radio Transceivers written by Sao-Jie Chen and published by Springer Science & Business Media. This book was released on 2006-11-05 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 802.11n wireless standard uses 64-state quadrature amplitude modulation (64-QAM) to achieve higher spectral efficiency. Consequently, the transmitter and receiver require a higher signal to noise ratio with the same level of error rate performance. This book offers a fully-analog compensation technique without baseband circuitry to control the calibration process. Using an 802.11g transceiver design as an example, it describes in detail an auto-calibration mechanism for I/Q gains and phases imbalance.