Balanced PA Topology For Beamforming
Balanced PA Topology For Beamforming
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用于波束成形的平衡 PA 拓扑
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
E. Kerhervé
中科院分区：
文献类型：
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作者：
J. Forest;V. Knopik;E. Kerhervé
用于波束成形应用的相控阵天线提出了一些挑战和限制。更具体地说，我们研究了每个天线之间的耦合，以便估计 VSWR 问题并了解对射频性能的影响：功率放大器的增益、PAE 和线性度。作为一项很好的研究，我们对 C65SOI PA 进行了仿真，并在 BiCMOS9MW 中设计了 28 GHz 双极平衡 PA，以实现强大的输出负载不敏感性。建议的平衡 PA 提供 12.5 dBm P1dB 和 17.9% 的最大功率附加效率以及 14 dB 增益。 28 GHz 时 2:1 VSWR 的增益和 PAE 变化分别为 1.1 dB 和 5.5%。其功耗为 39.1 mW，占地 0.121 mm2。
Phased array antennas for beamforming application presents several challenges and constraints. More specifically, the coupling between each antenna has been studied in order to estimate the VSWR issue and to see also the impact on RF performances: gain, PAE and linearity of the power amplifier. As a good study, simulation of a C65SOI PA has been done and a 28 GHz bipolar balanced PA has been designed in BiCMOS9MW to achieve robust output load insensitivity. The proposed balanced PA provides 12.5 dBm P1dB and a maximum Power Added Efficiency of 17.9% with 14 dB of gain. The gain and PAE variations for 2:1 VSWR at 28 GHz is 1.1 dB and 5.5% respectively. It consumes 39.1 mW and occupies 0.121 mm2.