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Digitally assisted equalization of third-order intermodulation products in wideband direct conversion receivers

Published online by Cambridge University Press:  22 June 2009

Edward A. Keehr  and
Ali Hajimiri
Edward A. Keehr
Affiliation:
Department of Electrical Engineering, California Institute of Technology, 1200 E. California Boulevard, M/C 136-93, Pasadena, CA 91125, USA.
Ali Hajimiri*
Affiliation:
Department of Electrical Engineering, California Institute of Technology, 1200 E. California Boulevard, M/C 136-93, Pasadena, CA 91125, USA.
*
Corresponding author: A. Hajimiri Email: hajimiri@caltech.edu
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Abstract

An effective linearization technique capable of equalizing IM3 products resulting from an arbitrary out-of-band blocking scenario in a wideband direct conversion receiver is presented. IM3 products are regenerated in the RF analog domain of a low-power mixed-signal feedforward path and are used to cancel analogous signal terms in the original receiver at digital baseband via adaptive equalization. The composite SAW-less receiver achieves an improvement in effective IIP3 from −7.1 to +5.3 dBm under worst-case UMTS Region 1 blocking when the feedforward path is active.

Keywords

RFReceiverMixed signalDigitalAdaptiveLinearization
Type
Original Article
Information
International Journal of Microwave and Wireless Technologies , Volume 1 , Special Issue 4: European Microwave Week 2008 , August 2009 , pp. 377 - 385
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2009

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References

[1]Keehr, E.; Hajimiri, A.: Digitally assisted linearization of wideband direct conversion receivers, in Proc. IEEE European Microwave Integrated Circuit Conf. (2008), pp. 159–162.Google Scholar
[2]Keehr, E.; Hajimiri, A.: Equalization of third-order intermodulation products in wideband direct-conversion receivers. IEEE J. Solid-State Circuits, 43 (2008), 2853–2867.CrossRefGoogle Scholar
[3]Valkama, M.; Ghadam, A.S.H.; Antilla, L.; Renfors, M.: Advanced digital signal processing techniques for compensation of nonlinear distortion in wideband multicarrier radio receivers. IEEE Trans. Microwave Theory Tech., 54 (2006), 2356–66.CrossRefGoogle Scholar
[4]Liscidini, A.; Brandolini, M.; Sanzogni, D.; Castello, R.: A 0.13 mm CMOS front-end, for DCS1800/UMTS/802.11b-g with multiband positive feedback low-noise amplifier. IEEE J. Solid State Circuits, 41 (2006), 981–9.CrossRefGoogle Scholar
[5]Floyd, B.A.; Reynolds, S.K.; Zwick, T.; Khuon, L.; Beukema, T.; Pfeiffer, U.R.: WCDMA direct-conversion receiver front-end comparison in RF-CMOS and SiGe BiCMOS. IEEE Trans. Microwave Theory Tech., 53 (2002), 1181–1188.CrossRefGoogle Scholar
[6]Keehr, E.; Hajimiri, A.: Analysis of internally bandlimited multistage cubic term generators for RF receivers. IEEE Transactions on Circuits and Systems – I, available athttp://ieeexplore.ieee.org.Google Scholar
[7]Shearer, F.; MacEachern, L.: A precision CMOS analog cubing circuit, in IEEE NEWCAS, 2004, 281–284.Google Scholar
[8]Westesson, E.; Sundstrom, L.: A complex polynomial predistorter chip in CMOS for baseband or IF linearization of RF power amplifiers in Proc. IEEE Int. Symp. Circuits and Systems (ISCAS '99), vol. 1, 1999, 206–209.Google Scholar
[9]Nesimoglu, T.; Canagarajah, C.N.; McGeehan, J.P.: A broadband polynomial predistorter for reconfigurable radio, in Vehicular Technology Conf., 2001, vol. 3, 2001, 1968–1972.Google Scholar
[10]Rahkonen, T.; et al. : Performance of an integrated 2.1 GHz analog predistorter, in 2006 Int. Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits, 2006, 34–37.CrossRefGoogle Scholar
[11]Oba, H.; Kim, M.; Arai, H.: FPGA implementation of LMS and N-LMS processor for adaptive array applications, in Int. Symp. Intelligent Signal Processing and Communications (ISPACS) Digest of Technical Papers, 2006, 485–488.Google Scholar
[12]UE Radio Transmission and Reception (FDD), Tech. Specification Group, 3 GPP, (TSG) RAN WG4, TS 25.101, v8.1.0, December 2007.Google Scholar
[13]muRata Corp Part Number DFYK61G95LBJCA, http://www.murata.com. Data sheet available athttp://smartdata.usbid.com/datasheets/usbid/dsid/103495.pdf.Google Scholar
[14]Springer, A.; Maurer, L.; Weigel, R.: RF system concepts for highly integrated RFICs for W-CDMA mobile radio terminals. IEEE Trans. Microwave Theory Tech., 50 (2002), 254–267.CrossRefGoogle Scholar
[15]Reynolds, S.K.; Floyd, B.A.; Beukema, T.J.; Zwick, T.; Pfeiffer, U.R.: Design and compliance testing of a SiGe WCDMA receiver IC with integrated analog baseband. Proc. IEEE, 93 (2005), 1624–1636.CrossRefGoogle Scholar