Theoretical Foundations for Teaching the Causes of Non-Linear Distortions in Modern High-Efficiency Transmitters

2022 Intelligent Technologies and Electronic Devices in Vehicle and Road Transport Complex (TIRVED) Pub Date : 2022-11-10 DOI:10.1109/TIRVED56496.2022.9965552

O. Varlamov

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引用次数: 15

Abstract

The issues of transmitting equipment energy efficiency are becoming more and more relevant during the transition to digital television and radio broadcasting, as well as an increase in the number of mobile transmitting devices. A potential way to solve this problem can be the use of active elements switching operating modes and synthetic methods of amplification in transmitters. This article has formulated the theoretical foundations necessary for teaching the causes of nonlinear distortions in modern high-efficiency transmitters. The reasons for the invention envelope elimination and restoration (EER) principle of operation - as separate amplification of modulated RF signals components are discussed. General requirements for OFDM transmitters - using the example of requirements for DRM transmitters are analyzed. How high power, high efficiency broadcast transmitters are built for the HF, LF and MF bands is discussed. Nonlinear distortions in EER transmitters are analyzed.

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现代高效发射机非线性失真成因教学的理论基础

在向数字电视和无线电广播过渡的过程中，以及移动发射设备数量的增加，发射设备的能效问题变得越来越重要。解决这一问题的一种潜在方法是在发射机中使用有源元件切换工作模式和综合放大方法。本文阐述了现代高效发射机非线性畸变成因教学所必需的理论基础。讨论了本发明的原因，即包络消除和恢复(EER)工作原理-作为调制射频信号分量的单独放大。OFDM发射机的一般要求——以DRM发射机的要求为例进行了分析。讨论了如何在高频、低频和中频波段构建高功率、高效率的广播发射机。分析了电磁干扰发射机的非线性畸变。

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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来源期刊

2022 Intelligent Technologies and Electronic Devices in Vehicle and Road Transport Complex (TIRVED)

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