具有线性增益响应和宽高效率输出功率回退区的负载调制平衡放大器

2020 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMiC) Pub Date : 2020-07-01 DOI:10.1109/INMMiC46721.2020.9160205

Kauser Chaudhry, R. Quaglia, S. Cripps

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引用次数: 10

摘要

本文提出了一种新的负载调制平衡放大器的工作模式，它通过提供线性增益响应和高效率的宽功率回退区来克服原有技术的两个局限性。与Doherty功率放大器相比，这种技术仍然保持了一些带宽优势和固有的设计简单性，通常与负载调制平衡放大器相关。实现了一个原型，并进行了单音测量。在1850MHz和2150mhz时，它显示出超过250W的最大输出功率，在9db后退时，功率增加效率大于45%，增益随功率变化小于2db。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Load Modulated Balanced Amplifier with Linear Gain Response and Wide High-Efficiency Output Power Back-Off Region

This paper presents a new mode of operation for load modulated balanced amplifiers that overcomes two limitations of the original technique by providing a linear gain response and a wide power back-off region with high efficiency. Compared to Doherty power amplifiers, this technique still maintains some of the bandwidth advantages and the inherent design simplicity typically associated with the load modulated balanced amplifier. A prototype has been realized and characterized with single-tone measurements. At 1850MHz and 2150 MHz, it shows a maximum output power in excess of 250W, and a power added efficiency greater than 45%, at 9 dB back-off, with a gain variation vs. power of less than 2 dB.

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2020 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMiC)

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