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An Efficient S-Band Doherty Power Amplifier Using Multi-state Integrated Matching

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Abstract

This paper proposes a 3.2–3.8-GHz Doherty power amplifier with simultaneous harmonic control, dual impedance matching, and wideband operation using a multi-state integrated matching network (MIMN). The MIMN controls the second harmonic open and third harmonic short at the center frequency of the carrier amplifier, enabling the carrier amplifier to perform inverse F operation. Similarly, it regulates the second harmonic short in the upper and lower sidebands, resulting in a hybrid harmonic operation. The proposed DPA, based on Cree's two HEMT devices, achieves a saturation efficiency of 62.6–69.9%, a 6 dB back-off efficiency of 47.3–61.1%, and a maximum output power of 43.63 dBm over the entire frequency range of 3.2–3.8 GHz.

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Data Availability

The data used to support the findings of this study are available from the corresponding author upon request.

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Acknowledgements

This work was supported by Science and Technology Plan Projects of Guangdong Province (No. 2020B010171001) and Science and Technology Plan Projects of Guangzhou City (No. 202002030407) and Science and Technology Development Special Fund Projects of Zhongshan City (Nos. 2019AG014, 2019AG042, 2020AG023).

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Authors and Affiliations

  1. Engineering Research Center for Optoelectronics of Guangdong Province, School of Electronics and Information Engineering, South China University of Technology, Guangzhou, 510640, China

    Zhenting Xiong, Jingxiong Chen & Hong Wang

  2. Guangdong Provincial Engineering Laboratory for Wide Bandgap Semiconductor Materials and Devices, School of Microelectronics, South China University of Technology, Guangzhou, 510640, China

    Jingying Wang & Hong Wang

  3. Zhongshan Institute of Modern Industrial Technology, South China University of Technology, Guangzhou, 510640, China

    Hong Wang

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  1. Zhenting Xiong
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  2. Jingying Wang
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Correspondence to Hong Wang.

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Xiong, Z., Wang, J., Chen, J. et al. An Efficient S-Band Doherty Power Amplifier Using Multi-state Integrated Matching. Circuits Syst Signal Process 42, 1818–1833 (2023). https://doi.org/10.1007/s00034-022-02173-6

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  • DOI: https://doi.org/10.1007/s00034-022-02173-6

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