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首页> 外文期刊>International Journal of Microwave and Wireless Technologies >An accurate modeling technique for antennas and nonlinear RF power amplifier mixed simulation
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An accurate modeling technique for antennas and nonlinear RF power amplifier mixed simulation

机译：天线和非线性RF功率放大器混合仿真的精确建模技术

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摘要

The design of agile active antennas requires an efficient modeling methodology in order to quantify the impact of other components on the array radiation pattern, and especially the influence of power amplifiers (PA). Therefore, the performance prediction of PA on TX chains is of prime importance. This article describes two different approaches for active antenna applications. The first one concentrates on PA macro-modeling, which takes into account a large output load impedance mismatch with a voltage standing wave ratio up to 4:1. A PA behavioral model based on nonlinear scattering functions was developed and extracted from CW measurements. The model validity was checked by comparison with the measured data. The second one describes a novel technique for synthesizing a given radiation pattern, whereas taking into account the mutual coupling and calculated matching impedances (Z_L ≠ 50 Ω) of each antenna in the array according to frequency and pointing angle.
机译：敏捷有源天线的设计需要一种有效的建模方法，以便量化其他组件对阵列辐射方向图的影响，尤其是功率放大器（PA）的影响。因此，PA在TX链上的性能预测至关重要。本文介绍了有源天线应用的两种不同方法。第一个集中在PA宏模型上，它考虑到较大的输出负载阻抗失配以及高达4：1的电压驻波比。建立了基于非线性散射函数的PA行为模型，并从CW测量中提取了该行为模型。通过与测量数据进行比较来检验模型的有效性。第二种方法描述了一种合成给定辐射方向图的新颖技术，同时考虑了阵列中每个天线根据频率和指向角度的相互耦合和计算出的匹配阻抗（Z_L≠50Ω）。

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    GEORGES ZAKKA EL NASHEF; FRANCOIS TORRES; SEBASTIEN MONS; TIBAULT REVEYRAND; EDOUARD NGOYA; THIERRY MONEDIERE; MARC THEVENOT; RAYMOND QUERE;

  • 作者单位

    XLIM - C_2S_2/OSA Departments UMR CNRS n°6172, University of Limoges 123, Avenue Albert Thomas, 87060 Limoges Cedex, France;

    XLIM - C_2S_2/OSA Departments UMR CNRS n°6172, University of Limoges 123, Avenue Albert Thomas, 87060 Limoges Cedex, France;

    XLIM - C_2S_2/OSA Departments UMR CNRS n°6172, University of Limoges 123, Avenue Albert Thomas, 87060 Limoges Cedex, France;

    XLIM - C_2S_2/OSA Departments UMR CNRS n°6172, University of Limoges 123, Avenue Albert Thomas, 87060 Limoges Cedex, France;

    XLIM - C_2S_2/OSA Departments UMR CNRS n°6172, University of Limoges 123, Avenue Albert Thomas, 87060 Limoges Cedex, France;

    XLIM - C_2S_2/OSA Departments UMR CNRS n°6172, University of Limoges 123, Avenue Albert Thomas, 87060 Limoges Cedex, France;

    XLIM - C_2S_2/OSA Departments UMR CNRS n°6172, University of Limoges 123, Avenue Albert Thomas, 87060 Limoges Cedex, France;

    XLIM - C_2S_2/OSA Departments UMR CNRS n°6172, University of Limoges 123, Avenue Albert Thomas, 87060 Limoges Cedex, France;

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  • 正文语种 eng
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  • 关键词

    active phased array antennas; behavioral modeling; impedance mismatch; electromagnetic interactions;

    机译：有源相控阵天线;行为建模;阻抗不匹配;电磁相互作用;

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