This presents a broadband high-efficiency power amplifier (PA). The branch line coupler is used to design the output circuits of the PA. By appropriately selecting the impedance conditions of terminal ports, the branch line coupler can not only realize impedance conversion but also realize harmonic impedance control. Two-stage couplers are exploited to expand the working bandwidth. To verify the effectiveness of the proposed method, a broadband high-efficiency PA is designed and fabricated by using CGH40010F. Measurements demonstrate that the saturated output power is from 41.0 to 42.5 dBm, the drain efficiency is between 64% and 75%, and the gain is from 10.2 to 11.5 dB.

中文翻译：

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一种采用支线耦合器的宽带高效功率放大器

这提出了一种宽带高效功率放大器 (PA)。支线耦合器用于设计 PA 的输出电路。通过适当地选择终端端口的阻抗条件，分支线耦合器不仅可以实现阻抗转换，而且还实现了谐波阻抗控制。利用两级耦合器来扩展工作带宽。为了验证所提出方法的有效性，使用CGH40010F设计并制造了宽带高效功率放大器。测量表明，饱和输出功率为 41.0 至 42.5 dBm，漏极效率为 64% 至 75%，增益为 10.2 至 11.5 dB。