Skip to main content
SpringerLink
Log in

Oscillating quiescent point in power amplifier biasing

  • Published:
Analog Integrated Circuits and Signal Processing Aims and scope Submit manuscript

Abstract

Biasing is an essential feature of any electronic circuit. The traditional method of biasing involves applying a proper DC to fix the operating point and thereafter ensure its stability. In this paper, we have proposed a new concept of transistor biasing. Instead of a fixed quiescent point which is normally established by giving DC input to the transistor for the purpose of biasing, we have proposed an oscillating quiescent point by giving square wave biasing input, so that the quiescent point would be oscillating between the two ends of the load line. During the positive half cycle of the input signal the quiescent point would be at the bottom of the load line near the cutoff region, while during negative half cycle of the input signal, the quiescent point would be at the top of the load line near the saturation region, thereby giving full cycle operation for the signal excursion in the active region. The linear range of amplification is better exploited to give higher amplification with negligible distortion and high efficiency.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13
Fig. 14
Fig. 15
Fig. 16
Fig. 17
Fig. 18
Fig. 19
Fig. 20

Similar content being viewed by others

References

  1. Akbarpour, M., Ghannouchi, F. M., & Helaoui, M. (2017). Current-biasing of power-amplifier transistors and its application for ultra-wideband high efficiency at power back-off. IEEE Transactions on Microwave Theory and Techniques, 65(4), 1257–1271.

    Article  Google Scholar 

  2. Narendra, K., & Yewkok, T. (2014). Optimised high-efficiency Class E radio frequency power amplifier for wide bandwidth and high harmonics suppression. IET Circuits, Devices and Systems, 8(2), 82–89.

    Article  Google Scholar 

  3. Zhao, C., Park, B., Cho, Y., & Kim, B. (2013). Analysis and design of CMOS Doherty power amplifier using voltage combining method. In 2013 IEEE international wireless symposium (IWS), Beijing (pp. 1–4).

  4. Chen, P., Merrick, B. M., & Brazil, T. J. (2015). Bayesian optimization for broadband high-efficiency power amplifier designs. IEEE Transactions on Microwave Theory and Techniques, 63(12), 4263–4272.

    Article  Google Scholar 

  5. Yang, M., Xia, J., Guo, Y., & Zhu, A. (2016). Highly efficient broadband continuous inverse class-f power amplifier design using modified elliptic low-pass filtering matching network. IEEE Transactions on Microwave Theory and Techniques, 64(5), 1515–1525.

    Article  Google Scholar 

  6. Ye, F., Chiang, J.-S., Chen, C.-W., & Sung, Y.-C. (2004). Dynamic bias circuits for efficiency improvement of RF power amplifier. Tamkang Journal of Science and Engineering, 7(3), 183–188.

    Google Scholar 

  7. Millman, J., & Halkias, C. C. (1986). “Power circuits and systems” in integrated electronics, international students edition (pp. 677–724). Singapore: McGraw Hill.

    Google Scholar 

  8. Jeon, Y. S., Cha, J., & Nam, S. (2007). High efficiency power amplifier using novel dynamics bias switching. IEEE Transactions on Microwave Theory and Techniques, 55(4), 690–696.

    Article  Google Scholar 

  9. Jang, H., Roblin, P., Quindroit, C., Lin, Y., & Pond, R. D. (2014). Asymmetric doherty power amplifier designed using model-based nonlinear embedding. IEEE Transactions on Microwave Theory and Techniques, 62(12), 3436–3451.

    Article  Google Scholar 

  10. Molundi, S., & Abidi, A. A. (2013). The outphasing RF power amplifier: a comprehensive analysis and a class—B CMOS realization. IEEE Journal of Solid-State Circuits, 48(6), 1357–1369.

    Article  Google Scholar 

  11. Wallenhauer, C., Gottlieb, B., Zeichfubl, R., & Kappel, A. (2010). Efficiency improved high-voltage analog power amplifier for driving piezoelectric actuators. IEEE Transactions of Circuits Systems I: Regular Papers, 57(1), 291–298.

    Article  MathSciNet  Google Scholar 

  12. Lv, J., Zhou, Y., Zhang, D. L., & Jiang, Y. D. (2010). A low noise compact class AB buffer amplifier with accurate quiescent current control. Analog Integrated Circuits and Signal Processing, 65, 283–288.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Electrical Engineering, Visvesvaraya National Institute of Technology, Nagpur, Maharashtra, 440010, India

    Sunil M. Mutha & B. S. Umre

Authors
  1. Sunil M. Mutha
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. B. S. Umre
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Sunil M. Mutha.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Mutha, S.M., Umre, B.S. Oscillating quiescent point in power amplifier biasing. Analog Integr Circ Sig Process 98, 265–276 (2019). https://doi.org/10.1007/s10470-018-1293-3

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10470-018-1293-3

Keywords

Search

Navigation