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A Wideband High Efficiency Doherty Power Amplifier Based on Coupled Line Architecture

机译:基于耦合线架构的宽带高效Doherty功率放大器

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摘要

A wideband high efficiency Doherty power amplifier (DPA) that works in the 1.85 to 2.4 GHz band (26 percent fractional bandwidth) employs two pairs of anti-coupled lines with stepped impedance resonators to replace the lambda/4 transmission lines in a conventional DPA for harmonic suppression and phase compensation. Maximum output power is between 43.0 and 44.1 dBm. At 6 dB output power back-off (OPBO), the maximum drain efficiency (DE) is 61.3 percent, with gain higher than 12 dB. In the saturated output power region, the efficiency is between 67 and 76.6 percent with gain higher than 8 dB. Compared with a conventional DPA, the third-order intermodulation distortion (IMD3) is reduced by 22 dB while efficiency and gain performance are greatly improved.
机译:工作在1.85至2.4 GHz频带(分数带宽为26%)的宽带高效Doherty功率放大器(DPA)使用两对带有步进阻抗谐振器的反耦合线来代替传统DPA中的lambda / 4传输线,用于谐波抑制和相位补偿。最大输出功率在43.0和44.1 dBm之间。在6 dB输出功率补偿(OPBO)下,最大漏极效率(DE)为61.3%,增益高于12 dB。在饱和输出功率区域,效率在67%至76.6%之间,增益高于8 dB。与传统的DPA相比,三阶互调失真(IMD3)降低了22 dB,同时效率和增益性能得到了极大提高。

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  • 来源
    《Microwave Journal》 |2017年第9期|116-128|共13页
  • 作者单位

    Univ Elect Sci & Technol China, Chengdu, Sichuan, Peoples R China;

    Univ Elect Sci & Technol China, Chengdu, Sichuan, Peoples R China;

    Univ Elect Sci & Technol China, Chengdu, Sichuan, Peoples R China;

    Univ Elect Sci & Technol China, Chengdu, Sichuan, Peoples R China;

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