In this paper, a novel concurrent Class B/J continuum mode is presented based on waveform shaping of current and voltage. The behavior characteristics and performances of power amplifiers (PAs) in concurrent dual‐band mode are investigated in detail. According to the analysis of proposed concurrent mode, the optimal load impedances at fundamental, harmonic and intermodulation (IM) frequencies are related to the magnitude ratio of the two carriers. Comparing with concurrent Class‐B mode, two parameters α, β can be configured independently in the proposed concurrent mode, which provides more freedom and flexibility for design without output power and drain efficiency degradation. In order to verify the proposed theory, a 1.9/2.35 GHz dual‐band power amplifier based on proposed concurrent mode is designed, fabricated and measured. Experimental results show that when the PA is driven by two 10 MHz LTE signals concurrently with total 9.2 dB peak‐to‐average power ratio (PAPR), the total average power is 36.0 dBm with 40.6% drain efficiency, which indicates a good concurrent performance.

中文翻译：

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新型并发B / J类连续谱功率放大器的分析与设计

本文提出了一种基于电流和电压波形整形的新型并发B / J类连续谱模式。详细研究了并发双频模式下功率放大器（PA）的行为特征和性能。根据对建议的并发模式的分析，基频，谐波和互调（IM）频率下的最佳负载阻抗与两个载波的幅度比有关。与并发B类模式相比，两个参数α，β可以在建议的并发模式下独立配置CMOS，这为设计提供了更大的自由度和灵活性，而不会降低输出功率和漏极效率。为了验证所提出的理论，设计，制造和测量了基于所提出的并发模式的1.9 / 2.35 GHz双频带功率放大器。实验结果表明，当功率放大器同时由两个10 MHz LTE信号驱动，总峰均功率比（PAPR）为9.2 dB时，总平均功率为36.0 dBm，漏极效率为40.6％，这表明并行性能良好。