Wideband Efficient Amplifiers for On-Chip Adaptive Power Management Applications

  • Lázaro Marco
  • Vahid Yousefzadeh
  • Albert García-Tormo
  • Alberto Poveda
  • Dragan Maksimović
  • Eduard Alarcón

Abstract

This chapter provides a review of system-level and circuit-level implementation aspects of strategic adaptive power management techniques which require wideband efficient power amplification, and that are crucial for power demanding loads in portable devices, such as envelope tracking for polar RF power transmitters, and on-chip line drivers for power line communications. The stringent specifications of such amplifiers pose relevant challenges both to assess the system-level impact of the amplifier limitations, as well as to design the power converter both in terms of converter topology and control. A discussion on advanced topologies aiming miniaturization and wideband low-distortion operation, both multi-level conversion and linear-assisted scheme, is presented. Details of advanced modulation and control methods are shown, namely low-oversampling ratio sigma-delta modulation with high-order filter, and digital predistortion of output filter dynamics built-in in PWM modulation.

Keywords

Microwave Beach Aliasing Cobos 

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References

  1. 1.
    Eduard Alarcón, Dragan Maksimović, “Powering ICs: trends in on-chip power regulators”, invited paper, Indian Institute of Technology, Kharagpur, India, December 23, 2005.Google Scholar
  2. 2.
    B. Sahu and G. A. Rincon-Mora, “A high-efficiency linear RF power amplifier with a power-tracking dynamically adaptive buck-boost supply,” Microwave Theory and Techniques, IEEE Transactions on, vol. 52, pp. 112, 2004.Google Scholar
  3. 3.
    Vahid Yousefzadeh, Eduard Alarcón and Dragan Maksimović, “Three-level buck converter for envelope tracking applications”, IEEE Power Electronics Letters, March 2006.Google Scholar
  4. 4.
    Vahid Yousefzadeh, Eduard Alarcón, Dragan Maksimović, “Efficiency optimization in linear-assisted switching power converters for envelope tracking in RF Power amplifiers”, IEEE International Symposium on Circuits and Systems, Kobe, Japan, May 23–26, 20055.Google Scholar
  5. 5.
    Itoh, T., Haddad, G. and Harvey, J., RF Technologies for Low Power Wireless Communications, John Wiley and Sons, Inc., 2001.Google Scholar
  6. 6.
    Yousefzadeh V., Wang, N., Popovic, Z., and Maksimović, D. “Digitally Controlled DC-DC Converter for RF Power Amplifier,” IEEE Applied Power Electronics Conference, February 2004.Google Scholar
  7. 7.
    Sevic J., “Statistical characterization of RF power amplifier efficiency for IS-95 CDMA digital wireless communication systems,” Proceeedings 2nd Annual Wireless Communication Conference, 1997.Google Scholar
  8. 8.
    G. Hanington, P.F. Chen, P. M. Asbeck and L.E. Larson, “High-efficiency power amplifier using dynamic power-supply voltage for CDMA applications”, IEEE Transactions on Microwave theory and techniques, vol. 47, nˆ 8, pp. 1471–1476, August 1999.Google Scholar
  9. 9.
    Kazimierczuk, M. “Collector amplitude modulation of the Class E tuned power amplifier”, IEEE Transactions on Circuits and Systems, vol CAS-31, $nˆ6$, June 1984, pp. 543–549.Google Scholar
  10. 10.
    Su, D.K., McFarland, W.J., “An IC for linearizing RF power amplifiers using envelope elimination and restoration”, IEEE Journal of Solid-State Circuits, Volume: 33, Dec. 1998 pp. 2252–2258.Google Scholar
  11. 11.
    Nagle, P., Burton, P., Heaney, E., and McGrath, F., ‘A Wide-Band Linear Amplitude Modulator for Polar Transmitters Based on the Concept of Interleaving Delta Modulation’, IEEE Journal of Solid-state circuits, vol. 37, No. 12, December 2002.Google Scholar
  12. 12.
    Sahu, B., Rincon-Mora, G.A., “System-level requirements of DC-DC converters for dynamic power supplies of power amplifiers”, IEEE Asia-Pacific Conference, ASIC 2002, Aug. 2002 Pages:149–152.Google Scholar
  13. 13.
    Soto, A., Oliver, J.A., Cobos, J.A., Cezon, J., and Arevalo, F., “Power supply for a radio transmitter with modulated supply voltage”, IEEE Applied Power Electronics Conference, APEC ’04, Volume: 1, Feb. 2004 pp. 392–398.Google Scholar
  14. 14.
    Marco, L., “Effects of switching power converter nonidealities in EER technique for implementation of polar RF PAs”, MSc thesis, UPC, Barcelona, Spain, Oct 2004.Google Scholar
  15. 15.
    Raab, F.H., “Intermodulation distortion in Kahn-technique transmitters”, IEEE Trans. on Microwave Theory and Techniques, Volume: 44, Issue: 12, December 1996, pp. 2273–2278.Google Scholar
  16. 16.
    Dietmar Rudolph “Out-of-band emission of digital transmissions using Kahn EER technique”, IEEE Trans. on Microwave Theory and Techniques, Volume: 50, Issue: 8, August 2002, pp. 1979–1983.Google Scholar
  17. 17.
    Li, Y., Maksimović, D. “High efficiency wide bandwidth power supplies for GSM and EDGE RF power amplifiers,” IEEE International Symposium on Circuits and Systems, ISCAS 2005, pp. 1314–1317, Vol. 2.Google Scholar
  18. 18.
    Raab, F.H., Asbeck, P., Cripps, S., Kenington, P.B., Popovic, Z.B., Pothecary, N., Sevic, J.F., and Sokal, N.O., “Power amplifiers and transmitters for RF and microwave,” IEEE Trans. on Microwave Theory and Techniques, Volume: 50, Issue: 3, March 2002, pp. 814–826.Google Scholar
  19. 19.
    Mann, S.; Beach, M.; Warr, P.; McGeehan, J.; “Increasing the talk-time of mobile radios with efficient linear transmitter architectures,” Electronics & Communication Engineering Journal, Volume: 13, Issue: 2, April 2001, pp. 65–76.Google Scholar
  20. 20.
    F. Wang; A. H. Yang, D.F. Kimball, L. E. Larson and P. M. Asbeck, “Design of wide-bandwidth envelope-tracking power amplifiers for OFDM applications”, IEEE Transactions on Microwave Theory and Techniques, Vol. 53, Issue 4, April 2005 pp. 1244–1255Google Scholar
  21. 21.
    Midya, P., “Linear switcher combination with novel feedback”, IEEE Power Electronics Specialists Conference, PESC. 2000, pp. 1425–1429, Vol. 3.Google Scholar
  22. 22.
    Feipeng Wang; Ojo, A.; Kimball, D.; Asbeck, P.; Larson, L., “Envelope tracking power amplifier with pre-distortion linearization for WLAN 802.11g”, IEEE Microwave Symposium Digest, 2004 IEEE MTT-S, 6–11 June, pp. 1543–1546 Vol.3.Google Scholar
  23. 23.
    Raab, F.H., “Split-band modulator for Kahn-technique transmitters”, Microwave Symposium Digest, 2004 IEEE MTT-S, 6–11 June 2004 pp. 887–890 Vol.2.Google Scholar
  24. 24.
    H. Ertl, J. W. Kolar, and F. C. Zach, “Basic Considerations and Topologies of Switched-Mode Assisted Linear Power Amplifiers”, IEEE Transactions on Industrial Electronics, Vol. 44, NO. 1, February 1997.Google Scholar
  25. 25.
    Nam-Sung Jung; Nam-In Kim; Gyu-Hyeong Cho, “A new high-efficiency and super-fidelity analog audio amplifier with the aid of digital switching amplifier: class K amplifier”, IEEE Power Electronics Specialists Conference, PESC 98, 17–22 May, pp:457–463 Vol.1.Google Scholar
  26. 26.
    Van der Zee, R.A.R.; van Tuijl, E.A.J.M., “A power-efficient audio amplifier combining switching and linear techniques”, Solid-State Circuits, IEEE Journal of Volume 34, Issue 7, July 1999, pp: 985–991.Google Scholar
  27. 27.
    Ginart, A.E.; Bass, R.M.; Leach, W.M., Jr., “High efficiency class AD audio amplifier for a wide range of input signals”, IEEE Industry Applications Conference, IAS 1999, 3–7 Oct., pp:1845–1850 Vol.3.Google Scholar
  28. 28.
    Marco, L.; Poveda, A.; Alarcon, E.; Maksimović, D.; “Bandwidth limits in PWM switching amplifiers”, IEEE International Symposium on Circuits and Systems ISCAS2006, Kos Island, Greece, May 21–24, 2006.Google Scholar
  29. 29.
    Ali, I.; Griffith, R., “A fast response, programmable PA regulator subsystem for dual mode CDMA/AMPS handsets”, IEEE Radio Frequency Integrated Circuits, RFIC 2000, 11–13 June pp:231–234.Google Scholar
  30. 30.
    Trescases, O.; Wai Tung Ng, “Variable output, soft-switching DC/DC converter for VLSI dynamic voltage scaling power supply applications”, IEEE Power Electronics Specialists Conference, PESC 2004, 20–25 June, pp: 4149–4155, Vol.6.Google Scholar
  31. 31.
    Engel Roza, “Analog-to-Digital Conversion via Duty-Cycle Modulation”, IEEE Trans. on Circuits and Systems,-II: Analog and Digital Signal Processing, vol. 44, no 11. November 1997.Google Scholar
  32. 32.
    Aurel A. Lazar and László T. Tóth, “‘Perfect Recovery and Sensitivity Analysis of Time Encoded Bandlimited Signals”’, IEEE Trans. on Circuits and Systems,-I: Regular Papers, vol. 51, n$o$ 10, pp 2060–2073. October 2004.Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Lázaro Marco
  • Vahid Yousefzadeh
  • Albert García-Tormo
  • Alberto Poveda
  • Dragan Maksimović
  • Eduard Alarcón
    • 1
  1. 1.Technical University of CatalunyaBarcelonaSpain

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