One high-efficiency power amplifier (PA) with a novel multiharmonic tuning (HT) network is presented. The second and third harmonic impedances are simultaneously controlled with a simple offset double-sided parallel strip line (DSPSL)-based output-matching network. Based on the above strategy, high PA efficiency can be achieved by mapping the fundamental and harmonic impedances to the optimum positions, while PA linearity can be improved through third harmonic suppression. The offset DSPSL is used to realize the transmission lines with extremely high impedance ratio in the multiharmonic trapping circuit. For demonstration, a PA using Cree CGH40010 GaN HEMT is designed with up to third harmonic control. The fabricated PA achieves peak power-added efficiency (PAE) and drain efficiency (DE) of 78.2% and 82.3%, respectively, while delivering 39.2-dBm output power at 1.8 GHz. Besides, the output third-order intercept point (OIP3) of the PA has an improvement of 3 dB.

中文翻译：

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具有多谐波调谐网络的高效功率放大器


提出了一种具有新型多谐波调谐（HT）网络的高效功率放大器（PA）。使用基于简单偏置双面平行带状线 (DSPSL) 的输出匹配网络同时控制二次和三次谐波阻抗。基于上述策略，可以通过将基波阻抗和谐波阻抗映射到最佳位置来实现高PA效率，同时可以通过三次谐波抑制来提高PA线性度。多谐波陷波电路中采用偏置DSPSL来实现具有极高阻抗比的传输线。为了进行演示，使用 Cree CGH40010 GaN HEMT 设计的 PA 具有高达三次谐波控制功能。所制造的 PA 的峰值功率附加效率 (PAE) 和漏极效率 (DE) 分别为 78.2% 和 82.3%，同时在 1.8 GHz 下提供 39.2 dBm 输出功率。此外，PA的输出三阶截取点（OIP3）也提高了3 dB。