High-frequency nonlinear amplifier model for the efficient evaluation of inband distortion under nonlinear load-pull conditions

G. Vandersteen, P. Wambacq, S. Donnay, F. Verbeyst
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引用次数: 1

Abstract

Designing complex analog systems needs different abstraction levels to reduce the overall complexity. The required level of abstraction depends on the accuracy and the purpose of the model. High-frequency amplifier models can vary from simple transfer functions for efficient bit-error-rate analysis up to detailed transistor level descriptions for accurate load-pull prediction. This paper introduces a nonlinear black-box model for high-frequency amplifiers. It extends the linear S-parameter representation to enable both efficient system-level simulations and load-pull prediction. Both are demonstrated on the measurements of a high-frequency amplifier excited using a WLAN - OFDM modulation.
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用于有效评估非线性负载-拉力条件下带内畸变的高频非线性放大器模型
设计复杂的模拟系统需要不同的抽象层次来降低整体的复杂性。所需的抽象级别取决于模型的准确性和目的。高频放大器模型可以从简单的传递函数,有效的误码率分析到详细的晶体管级描述,准确的负载-拉力预测。本文介绍了一种用于高频放大器的非线性黑盒模型。它扩展了线性s参数表示,以实现高效的系统级仿真和负载-拉力预测。在使用WLAN - OFDM调制激励的高频放大器的测量上验证了这两种方法。
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