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Publisher: Institution of Engineering and Technology
Languages: English
Types: Article
Subjects: TK
This letter presents the design strategy for an ultrawideband,high-efficiency hybrid power amplifier based on a commercial GaN-HEMT. The measurement results demonstrate a state-of-the-art fractional bandwidth of 145.5%, with saturated output power higher than 10 W from 0.6 to 3.8 GHz and power added efficiency exceeding 46% in the whole band, thus covering most of the mobile frequencies and making this device suitable for small-base station applications. The simple design approach exploits a N-section transformer, and allows for a priori estimation of the bandwidth: in the proposed case, a good agreement between estimated and measured bandwidth is obtained.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • [1] S. Chen, Y. Wang, F. Qin, Z. Shen, and S. Sun, “LTE-HI: A new solution to future wireless mobile broadband challenges and requirements,” IEEE Trans. Wireless Commun., vol. 21, no. 3, pp. 70-78, Jun. 2014.
    • [2] Z. Dai, S. He, F. You, J. Peng, P. Chen, and L. Dong, “A new distributed parameter broadband matching method for power amplifier via real frequency technique,” IEEE Trans. Microw. Theory Techn., vol. 63, no. 2, pp. 449-458, Feb. 2015.
    • [3] K. Chen and D. Peroulis, “Design of broadband highly efficient harmonictuned power amplifier using in-band continuous class- F−1/F mode transferring,” IEEE Trans. Microw. Theory Techn., vol. 60, no. 12, pp. 4107-4116, Dec. 2012.
    • [4] P. Saad, C. Fager, H. Cao, H. Zirath, and K. Andersson, “Design of a highly efficient 2-4-GHz octave bandwidth GaN-HEMT power amplifier,” IEEE Trans. Microw. Theory Techn., vol. 58, no. 7, pp. 1677-1685, Jul. 2010.
    • [5] J. Xia, X.-W. Zhu, and L. Zhang, “A linearized 2-3.5 GHz highly efficient harmonic-tuned power amplifier exploiting stepped-impedance filtering matching network,” IEEE Microw. Wireless Compon. Lett., vol. 24, no. 9, pp. 602-604, Sep. 2014.
    • [6] X. Ding, S. He, F. You, S. Xie, and Z. Hu, “2-4 GHz wideband power amplifier with ultra-flat gain and high PAE,” Electron. Lett., vol. 49, no. 5, pp. 326-327, Feb. 2013.
    • [7] J. M. Rubio, J. Fang, V. Camarchia, R. Quaglia, M. Pirola, and G. Ghione, “3-3.6 GHz wideband GaN Doherty power amplifier exploiting output compensation stages,” IEEE Trans. Microw. Theory Techn., vol. 60, no. 8, pp. 2543-2548, Aug. 2012.
  • No related research data.
  • Discovered through pilot similarity algorithms. Send us your feedback.

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