D功率放大器资料文档

D功率放大器资料文档

文档编号:JD140 字数:16316,页数:38

摘要
随着现代无线通信的发展，微波功率放大器已成为微波通信设备的重要部件，它的性能优劣在很大程度上影响着通信质量。因而，对微波功率放大器的研究和设计也越来越受关注。
本文分析了微波功率放大器的非线性特性，介绍了其阻抗匹配电路的方法，并根据指标要求对晶体管的输入输出网络进行阻抗匹配，用微带线实现匹配电路。用ADS软件进行优化仿真，最后设计出大信号微波功率放大器。通过多次调试、测试实验，所设计的微波功率放大器在2.4GHz的频率上增益达到7dB以上。

关键字：微波功率放大器大信号优化设计 CAD

Abstract
With the development of wireless communication，microwave power amplifier has been an important component in microwave communication, its capability effects the quality of the communication in a large extent. So it has been paid more and more attention in the research and design of microwave power amplifier.
In this paper, firstly the nonlinear characteristics of the microwave power amplifier have been analyzed, and several impedance matching circuits for the power amplifier have been introduced. Then according to the required features, the input and output impedance matching networks have been respectively designed for a given transistor, using microstrip line model to solve this problem. And after having used the ADS software to make S-parameter simulation and optimization, a large signal microwave power amplifier is finally designed. With a series of rigorous experiments and tests, the maximum gain of the designed power amplifier can be up to 7dB .

Key word: microwave, power amplifier, large signal, optimization design， CAD

目录
第一章引言……………………………………………………(1)
第二章微波功率放大器的非线性特性………………………… (2)
2.1 单级功率放大器的非线性特性……………………………(2)
2.2 级联功率放大器的非线性特性 ………………………… (6)
2.3 微波功率放大器线性化技术 ………………………… (7)
第三章微波功率放大器的设计原理…………………………… (9)
3.1 功率放大器的稳定性………………………………………(9)
3.2 功率放大器的匹配设计……………………………………(11)
3.3 功率放大器的实现方法……………………………………(14)
3.4 功率放大器的偏置电路设计………………………………(17)
第四章功率放大器的电路仿真与实验研究 ……………………(19)
4.1 2.4GHz功率放大器的主要技术指标 ……………………(19)
4.2 GaAs场效应功率晶体管 ……………………………… (20)
4.3 2.4GHz功率放大器的电路仿真……………………………(23)
4.4 2.4GHz功率放大器的实验研究 ……………………………(32)
第五章结束语………………………………………………………(33)
参考文献…………………………………………………………… (34)
致谢 ………………………………………………………………(36)

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