P. Saad, L. Piazzon, P. Colantonio, J. Moon, F. Giannini, K. Andersson, Bumman Kim, C. Fager
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引用次数: 13
摘要
本文设计了一种峰值效率高的双频功率放大器(PA)，并将其作为实现平均效率高的Doherty PA (DPA)的基本单元，实现了同时工作在1.8GHz和2.4 GHz的双频/多模高效发射机。从双频PA中，当10MHz LTE和WiMAX信号同时存在时，实验获得了平均25%的PAE。当使用此PA作为双频Doherty PA的基础时，平均PAE提高(提高9个百分点)至34%。使用标准的数字线性化技术，PA和DPA分别实现了低于-46.5 dBc和-46.0 dBc的相邻通道泄漏比(ACLR)。
Multi-band/multi-mode and efficient transmitter based on a Doherty Power Amplifier
This paper presents the design of a high peak efficiency dual-band power amplifier (PA) and how it is adopted as basic cell to implement a high average efficiency Doherty PA (DPA), achieving a dual-band/multi-mode and efficient transmitter concurrently operating at 1.8GHz and 2.4 GHz. From the dual-band PA, an average PAE of 25% has been experimentally obtained, when exited with concurrent 10MHz LTE and WiMAX signals. When using this PA as a basis for a dual band Doherty PA, the average PAE is improved (by 9 percentage units) to 34%. An adjacent channel leakage ratio (ACLR) lower than -46.5 dBc and -46.0 dBc has been fulfilled from PA and DPA, respectively, using a standard digital linearization technique.
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