陆地移动无线电系统甚高频频谱e类功率放大器效率的提高

A. Aruna, K. J. Kumar
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引用次数: 0

摘要

陆地移动无线电(LMR)被各种紧急组织使用,如军事、消防和救护车服务。LMR的主要功能是在无线电频率的选择范围内传输语音,它们大多是电池供电的。LMR的功率放大器电路由于消耗大量的电池功率而引起了工程师们的广泛关注。为了寻找提高动力附加效率(PAE)的解决方案,人们对动力附加效率进行了更多的研究。PAE代表一个价值值,它经济地显示了PA将射频功率转换为直流功率的效率。随着PAE参数的增加,器件能够以更少的直流功耗产生相同功率的输出。在各类功放中,e类功放因其具有较高的PAE和更强的谐波抑制能力而备受工程师们的关注。本文采用超前设计系统(advanced Design System, ADS)软件进行设计和仿真。设计了e类PA,在输出端对谐波进行抑制。最终设计工作在136-174MHz的频率范围内,PAE为92.39%,输出功率为28.75dBm, e类PA抑制二阶谐波的效率提高了91.675dBc。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Efficiency enchancement of Class-E power amplifier in VHF radio frequency spectrum for land mobile radio system
Land Mobile Radios (LMR) are used by various emergency organizations such as military, fire and ambulance services. The main function of LMR is to transmit voice over a selective range of radio frequency and they are mostly battery operated. Power amplifier (PA) circuit of LMR has drawn a major concern from engineers because they consume enormous power from battery. More research is conducted on PA to find solutions for improving Power Added Efficiency (PAE). PAE represents a figure of merit that economically shows how efficiently the PA converts RF power to DC power. With PAE parameter increased the device can be able to produce output the same amount of power with less DC power consumed. Class-E power amplifier desires the most attention among different classes of PA from engineers because of their ability of providing high PAE and more harmonic suppression. In this paper, Advance Design System (ADS) software is used for designing and simulation. Class-E PA is designed, harmonics are suppressed at the output. The final design operates at the frequency range of 136-174MHz with PAE of 92.39% by delivering 28.75dBm output power and the effectiveness of Class-E PA is boosted to suppress second order harmonics by 91.675dBc.
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