The Nested-Mode Power Amplifiers for Highly Efficient Multi-Octave Applications
The Nested-Mode Power Amplifiers for Highly Efficient Multi-Octave Applications
复制标题
适用于高效多倍频程应用的嵌套模式功率放大器
DOI:
10.1109/tmtt.2019.2947507
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发表时间:
2019-11
影响因子:
4.3
通讯作者:
Zhenghe Feng
中科院分区:
文献类型:
--
作者:
Xiaofan Chen;Wenhua Chen;Fadhel M. Ghannouchi;Zhenghe Feng
In this article, a novel nested-mode power amplifier (NMPA) is proposed for highly efficient multi-octave applications. By introducing a group of nested guaranteed regions (GRs) at the fundamental and harmonic frequencies as the target design space, the difficulties caused by frequency overlapping in harmonically tuned multi-octave power amplifiers (PAs) can be overcome, leading to a self-consistent theory of multi-octave PAs. Furthermore, the methodology of constructing the proposed nested GRs is demonstrated based on a simplified numerical model. According to the methodology, the desired nested GRs can be constructed by following several well-defined closed-form steps. In addition, a feasible design methodology of the NMPA is established based on a simplified deembedding technique of packaged devices. Based on the proposed theory and design method, a 1–3100-MHz NMPA is designed and measured. According to the measured results, the designed PA exhibits 57.5–73.9% drain efficiency and 39–42.6-dBm output power across the band. Moreover, the linearity and linearizability of the designed NMPA are verified using up to 20-MHz-bandwidth-modulated signals across the designed band accompanied with a digital predistortion (DPD) procedure. To the best of our knowledge, this is the state-of-the-art performance of multi-octave broadband PAs.
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DOI:
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发表时间:
2016-08
期刊:
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影响因子:
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影响因子:
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