SEMICONDUCTOR INTEGRATED CIRCUITS

An IQ mismatch calibration and compensation technique for wideband wireless transceivers

Jin Peng1, , Liguo Zhou1, Heng Yao1, Fang Yuan1, Zhi Fang2 and Yin Shi1

+ Author Affiliations

 Corresponding author: Peng Jin, Email:jpeng05@163.com

PDF

Abstract: An IQ mismatch calibration and compensation technique based on the digital baseband for wideband wireless communication transmitters is proposed. The digital baseband transmits the signal used for IQ mismatch calibration. The signal passes through the RF transmitter path, the calibration loop (which is composed of a square power detector and a band-pass filter in the RF transceiver) and the variable gain amplifier of the receiver. The digital baseband samples the signal for IQ mismatch estimation and compensates for it. Compared with the self-calibration technique in the RF chip, the proposed technique saves area and power consumption for the wireless local area network solution. This technique has been successfully used for the 802.11n system and satisfies the requirement of the standard by achieving over 50 dB image suppression.

Key words: 802.11nWLANimage suppressionIQ mismatchcalibration



[1]
Faulkner M, Mattsson T, Yates W. Automatic adjustment of quadrature modulators. IET Journals & Magazines, 1991, 27(3):214 http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=83217
[2]
ZargariM, Nathawad L Y, Samavati H, et al. A dual-band CMOS MIMOradio SOC for IEEE 802.11nwireless LAN. IEEE J Solid-State Circuits, 2008, 43(12):2882 doi: 10.1109/JSSC.2008.2005742
[3]
Schenk T C W, Fledderus E R, Smulders P F M. Performance impact of IQ mismatch in direct-conversion MIMO OFDM transceivers. IEEE Radio and Wireless Symposium, 2007:329 http://ieeexplore.ieee.org/xpls/icp.jsp?arnumber=4160718
[4]
Hsieh Y H, Hu W Y, Lin S M, et al. An auto-I/Q calibrated CMOS transceiver for 802.11g. IEEE J Solid-State Circuits, 2005, 40(11):2187 doi: 10.1109/JSSC.2005.857348
[5]
Kang B, Yim J, Kim T W W, et al. An ultra-wideband transmitter with automatic self-calibration of sideband rejection up to 9 GHz in 65 nm CMOS. Int SoC Design Conf, 2010:332 http://ieeexplore.ieee.org/document/5682903/
[6]
Vassiliou I, Vavelidis K, Georgantas T, et al. A single-chip digitally calibrated 5.15-5.825-GHz 0.18-μm CMOS transceiver for 802.11a wireless LAN. IEEE J Solid-State Circuits, 2003, 38(12):2221 doi: 10.1109/JSSC.2003.819086
[7]
IEEE 802. 11n-2009, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer(PHY) Specifications, Amendment 5: Enhancements for Higher Throughput. New York: The institute of Electrical and Electronics Engineers, Inc, 2009
[8]
Hsieh Y H, Hu W Y, Lin S M, et al. An auto-I/Q calibrated CMOS transceiver for 802.11g. IEEE ISSCC Dig Tech Papers, 2005:92 http://ntur.lib.ntu.edu.tw/bitstream/246246/144091/1/26.pdf
Fig. 1.  The transceiver with IQ mismatch calibration based on the digital baseband

Fig. 2.  Square power detector based on the Hilbert multiplier

Fig. 3.  Band-pass filter

Fig. 4.  The mathematical model of the calibration system

Fig. 5.  Calibration procedure of IQ mismatch

Fig. 6.  The IQ mismatch compensation circuits

Fig. 7.  Die photograph of the RF transceiver

Fig. 8.  Die photograph of the digital baseband

Fig. 9.  IQ mismatch calibration effect of single-sideband signal. (a) Before calibration. (b) After calibration

Fig. 10.  Constellation of 64QAM transmitted signal. (a) Before calibration. (b) After calibration

Table 1.   Comparison results of two calibration techniques

[1]
Faulkner M, Mattsson T, Yates W. Automatic adjustment of quadrature modulators. IET Journals & Magazines, 1991, 27(3):214 http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=83217
[2]
ZargariM, Nathawad L Y, Samavati H, et al. A dual-band CMOS MIMOradio SOC for IEEE 802.11nwireless LAN. IEEE J Solid-State Circuits, 2008, 43(12):2882 doi: 10.1109/JSSC.2008.2005742
[3]
Schenk T C W, Fledderus E R, Smulders P F M. Performance impact of IQ mismatch in direct-conversion MIMO OFDM transceivers. IEEE Radio and Wireless Symposium, 2007:329 http://ieeexplore.ieee.org/xpls/icp.jsp?arnumber=4160718
[4]
Hsieh Y H, Hu W Y, Lin S M, et al. An auto-I/Q calibrated CMOS transceiver for 802.11g. IEEE J Solid-State Circuits, 2005, 40(11):2187 doi: 10.1109/JSSC.2005.857348
[5]
Kang B, Yim J, Kim T W W, et al. An ultra-wideband transmitter with automatic self-calibration of sideband rejection up to 9 GHz in 65 nm CMOS. Int SoC Design Conf, 2010:332 http://ieeexplore.ieee.org/document/5682903/
[6]
Vassiliou I, Vavelidis K, Georgantas T, et al. A single-chip digitally calibrated 5.15-5.825-GHz 0.18-μm CMOS transceiver for 802.11a wireless LAN. IEEE J Solid-State Circuits, 2003, 38(12):2221 doi: 10.1109/JSSC.2003.819086
[7]
IEEE 802. 11n-2009, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer(PHY) Specifications, Amendment 5: Enhancements for Higher Throughput. New York: The institute of Electrical and Electronics Engineers, Inc, 2009
[8]
Hsieh Y H, Hu W Y, Lin S M, et al. An auto-I/Q calibrated CMOS transceiver for 802.11g. IEEE ISSCC Dig Tech Papers, 2005:92 http://ntur.lib.ntu.edu.tw/bitstream/246246/144091/1/26.pdf
  • Search

    Advanced Search >>

    GET CITATION

    shu

    Export: BibTex EndNote

    Article Metrics

    Article views: 5361 Times PDF downloads: 112 Times Cited by: 0 Times

    History

    Received: 02 January 2014 Revised: 18 March 2014 Online: Published: 01 August 2014

    Catalog

      Email This Article

      User name:
      Email:*请输入正确邮箱
      Code:*验证码错误
      Jin Peng, Liguo Zhou, Heng Yao, Fang Yuan, Zhi Fang, Yin Shi. An IQ mismatch calibration and compensation technique for wideband wireless transceivers[J]. Journal of Semiconductors, 2014, 35(8): 085003. doi: 10.1088/1674-4926/35/8/085003 J Peng, L G Zhou, H Yao, F Yuan, Z Fang, Y Shi. An IQ mismatch calibration and compensation technique for wideband wireless transceivers[J]. J. Semicond., 2014, 35(8): 085003. doi: 10.1088/1674-4926/35/8/085003.Export: BibTex EndNote
      Citation:
      Jin Peng, Liguo Zhou, Heng Yao, Fang Yuan, Zhi Fang, Yin Shi. An IQ mismatch calibration and compensation technique for wideband wireless transceivers[J]. Journal of Semiconductors, 2014, 35(8): 085003. doi: 10.1088/1674-4926/35/8/085003

      J Peng, L G Zhou, H Yao, F Yuan, Z Fang, Y Shi. An IQ mismatch calibration and compensation technique for wideband wireless transceivers[J]. J. Semicond., 2014, 35(8): 085003. doi: 10.1088/1674-4926/35/8/085003.
      Export: BibTex EndNote

      An IQ mismatch calibration and compensation technique for wideband wireless transceivers

      doi: 10.1088/1674-4926/35/8/085003
      More Information
      • Corresponding author: Peng Jin, Email:jpeng05@163.com
      • Received Date: 2014-01-02
      • Revised Date: 2014-03-18
      • Published Date: 2014-08-01

      Catalog

        /

        DownLoad:  Full-Size Img  PowerPoint
        Return
        Return