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Behavior Modeling and Comparison of Envelope Tracking vs Envelope-Elimination-and-Restoration for Class E SiGe PA Linearization

Yan Li*, Jerry Lopez**, Donald Lie***

*Department of Electrical and Computer Engineering, TexasTech. University, Lubbock, TX, U.S.A.

** Department of Electrical and Computer Engineering, TexasTech. University, Lubbock, TX, U.S.A.

*** Associate Professor, Department of Electrical and Computer Engineering, Texas Tech. University, Lubbock, TX, U.S.A.

Periodicity:April - June'2008
DOI : https://doi.org/10.26634/jee.1.4.371

Abstract

A modified bias-dependent Cann’s model and performed IC design and hardware experiments to study the linearization of a highly-efficient monolithic quasi-class E SiGe power amplifier (PA) IC using both Envelope-Tracking (ET) and Envelope-Elimination-and-Restoration (EER) techniques. Our PA behavior model fits the measured SiGe PA IC data very well across a wide range of bias and supply voltages. Both measurement and simulations show that the ET-linearized PA system is significantly less sensitive to the timing misalignment between the amplitude and the RF signal path than the EER-linearized PA system. Our experimental results also prove that ET successfully linearized the SiGe PA to pass the stringent EDGE transmit mask at 900MHz, while EER could not. Simulations based on our PA behavior model predict that the optimal timing alignment for ET linearization can be achieved at PA base bias voltage Vbb=0.55-0.6V, which is consistent with our measurement results as well.

Keywords

Power Amplifier Linearization, Quasi-Class E, SiGe PA, Cann’s Model, Envelope-Tracking, Envelope-Elimination-and-Restoration, Time Mismatching

How to Cite this Article?

Yan Li, Jerry Lopez and Donald Lie(2008). Behavior Modeling and Comparison of Envelope Tracking vs Envelope-Elimination-and-Restoration for Class E SiGe PA Linearization. i-manager’s Journal on Electrical Engineering, 1(4), Apr-Jun 2008, Print ISSN 0973-8835, E-ISSN 2230-7176, pp. 15-21. https://doi.org/10.26634/jee.1.4.371

References

[l]. N.O. Sokal and A.D. Sokal, "Class E-a new Class of high efficiency tuned single-ended switching power amplifiers", IEEE J. Solid-State Circuits, vol. 10, no, 3, pp. 168-176, June (1975).

[2] . F. H. Raab, "Idealized Operation of the Class E Tuned Power Amplifier," IEEE Trans. Circuits Syst., vol. 24, no. 12, pp. 725-735, Dec. (1977),

[3] . K. Tsai and RR. Gray, "A 1.9-GHz, 1 -W CMOS Class-E Power Amplifier for Wireless Communications," IEEE J. Solid-State Circuits, vol. 34, no. 7, pp. 962-970, July (1999),

[4] . C. Yoo and Q. Huang, "A common-gate switched 0.9-W Class-E power amplifier with 41% PAE In 0.25-um CMOS," IEEE J. Solid-State Circuits, vol. 36, no. 5, pp. 823-830, May (2001).

[5] . Y. Tan, M. Kumar, J.K.O. Sin, L. Shi and J. Lau, “A 900- MHz fully integrated SOI power amplifier for single chip wireless transceiver applications," IEEE J. Solid-State Circuits, vol. 35, no. 10, pp. 1481 -1486, (2000).

[6] . K.-W. Ho and H.C. Luong, "A 1-V CMOS power amplifier for Bluetooth applications," IEEE Trans. Circuits and Systems II, Analog Digit. Signal Process., vol. 50, no. 8, pp. 445-449, Aug. (2003).

[7] . A. Scuderl, L. La Pag I la, F. Carrara and G. Palmlsano, "A VSWR-Protected Silicon bipolar RF power amplifier with soft-slope power control", IEEE J. Solid-State Circuits, vol. 40, no, 3, pp. 611 -621, May (2005).

[8] . A. Mazzanti, L. Larcher, R. Brama and F. Svelto, "Analysis of reliability and power efficiency in cascode Class-E PAs", IEEE J. Solid-State Circuits, vol. 41, no. 5, pp. 1222-1229, May(2006).

[9]. N.O. Sokal, "Class-E switching-mode high-effiicency tuned RF/MIcrowave power amplifier: Improved design equations", IEEEMTT-S, pp. 779-782, (2000

[10]. D.Y.C. Lie, R Lee, J.D. Popp, J.F. Rowland, H.H. Ng and A.H. Yang, "The Limitations in Applying Analytic Design Equations for Optimal Class E RF Power Amplifiers Design", Proc. Tech. Dig., IEEE Inf I Symp. on VLSI Design, Automation, and Test(VLSI-TSA-DAT), Hsin-Chu, Taiwan, pp. 161-164, Apr. (2005).

[11 ]. R. Negra and W. Bachtold, "Lumped-element load- network design for class-E power amplifiers," IEEE Trans. Microwave Theory and Techniques, vol. 54, no. 6, pp. 2684-2690, June (2006).

[12] , F. Wang, A.H. Yang, D.F. Kimball, L.E. Larson and RM. Asbeck, "Design of wide-bandwidth Envelope-Tracking power amplifiers for OFDM applications", IEEE Tran. Microwave Theory and Techniques, vol. 53, no. 4, pp. 1244-1255, Apr. (2005).

[13] . D.Y.C. Lie, J. D. Popp, F. Wang, D. Kimball, and L.E. Larson, "Linearization of highly-efficient monolithic class E SiGe power amplifier with Envelope-Tracking (ET) and Envelope-Elimination-and-Restoration (EER) at 900MHz", Proc. IEEE Sixth Dallas Circuits and Systems Workship (DCAS), Dallas, USA, pp. 39-42, Nov. 15-16 (2007).

[14] . F. H. Raab, "Intermodulation distortion in Kahn- Technique transmitters", IEEE Trans. Microwave Theory and Techniques, vol. 44, no. 12, pp. 2273-2278, Dec. (1996).

[15] . J. Litva and T. K-Y. Lo, Digital Beamforming In Wireless Communication, Norwood, MA: Artech House, 1996.

[16] . A. J. Cann, "Nonlinearity model with variable knee sharpness", IEEE Tran. Aerosp. Electron. Syst., vol 16, no. 6, pp. 874-877, Nov. (1980).

[17] . J. Staudinger, B. Gilsdorf, D. Newman, G. Norris, G. Sadowniczak, R. Sherman and T. Quach, "High efficiency CDMA RF power amplifier using dynamic envelope tracking technique", IEEE MTT-S Int. Microwave Symp. Dig., Boston, USA, pp. 873-976, June 11-16,2000.

[18] . S. L. Loyka, "On the Use of Cann's Model for Nonlinear Behavior-Level Simulation", IEEE Tran. Vehicular Technology, vol. 49, no. 5, pp. 1982-1985, Sept. (2000).

[19] . K. A. Remley, D.F. Williams, D.M.M.-R Schreurs and J. Wood, "Simplifying and interpreting two-tone measurements", IEEE. Trans. Microwave Theory and Techniques, vol. 52, no. 11, pp. 2576-2585, Nov. (2004).

Behavior Modeling and Comparison of Envelope Tracking vs Envelope-Elimination-and-Restoration for Class E SiGe PA Linearization

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