A Ka-Band Power Amplifier with Reconfigurable Impedance Matching Network

A. A. Nawaz, J. Albrecht, A. Ulusoy
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引用次数: 2

Abstract

A tunable matching network integrated with the power amplifier (PA) is described that can adapt to potential impedance variations presented by the antenna. The matching network is designed to match loads within half-gamma around nominal 50-$\Omega$ impedance. The tunability is achieved by modifying the length of transmission line segments within the matching network by using reverse saturated SiGe switches. S-parameters and load-pull measurements have been obtained and demonstrate that the PA is able to adapt to different load impedances, therefore is able provide constant PAE and output power at a significantly extended range of impedance variations. In this paper, the design approach is explained that leads to significantly improved performance of the presented PA compared to previously published reconfigurable PAs.
具有可重构阻抗匹配网络的ka波段功率放大器
介绍了一种与功率放大器集成的可调谐匹配网络,该网络可以适应天线的电位阻抗变化。匹配网络设计用于匹配标称阻抗为50-$ ω $的半γ范围内的负载。可调性是通过使用反向饱和SiGe开关修改匹配网络内传输线段的长度来实现的。s参数和负载-拉力测量已经获得,并证明了PA能够适应不同的负载阻抗,因此能够在显著扩展的阻抗变化范围内提供恒定的PAE和输出功率。在本文中,解释了与先前发布的可重构PA相比,导致所述PA性能显着提高的设计方法。
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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