要解决这个问题，必须采用线性化技术来改善高效率功率放大器的非线性特性。
For solving this problem, various linearization techniques have been employed to improve the linearity of high efficiency power amplifier.
本论文主要对无线通信集成电路中的关键模块——高效率功率放大器展开了一些研究和设计工作。
This paper does research on the key module-high efficiency power amplifiers-in wireless communication integrated circuit system.
于是功率放大器的线性化以及提高效率的技术被采用来改善发射器的线性度和效率。
Linearization and efficiency enhancement techniques of power amplifier can be adopted to improve the linearity and power efficiency of the transmitter.
最后，分析了进一步降低功率放大器的功耗、提高效率、提高可靠性，减小功放体积的可能性。
Finally, the author analyzes the possibility to cut down power waste of amplifier further, improve the efficiency and reliability, decrease the volume of power amplifier.
射频功率放大器的主要功用是放大射频信号，并且以高效率输出大功率为目的。
The primary function of RF power amplifier is to amplify the RF singal with high efficiency.
利用这种方法实现的D类功率放大器具有高效率高性能的特点，并能降低滤波器性能的要求。
By using the scheme, the Class-D amplifier has gained high efficiency and high performance, and it can lower the requirement of output filters.
结合射频E类功率放大器的结构特点，采用CMOS工艺，达到了在大的输出功率范围内保持持续稳定高效率的目的。
The controller combines parallel amplification and drain modulation of the CMOS class-E power amplifier to provide high efficiency over a broad range of output powers.
而功率放大器又具有非线性特性，因此要设计高效率又高线性度的无线发射机便成了一个相当困难的挑战。
Designing a high linearity and high power efficiency wireless transmitter is a big challenge due to the nonlinear characteristic of the power amplifier.
为保证通信质量需要使用高线性的功率放大器，而高效率的功率放大器通常是非线性的。
The high linear power amplifier has to be used to guarantee communication quality. Unfortunately, power efficient amplifiers are typically nonlinear.
功率放大器的主要目的是以高效率得到大的输出功率。
The main function of the power amplifier is to get the highest output power at high efficiency.
开关功率放大器的优势是它具有高效率，但是由于其本身固有的非线性，开关功率放大器的失真通常大于传统的线性放大器。
The advantage of the switching amplifier is the high efficiency, but the distortion is still bigger than the linear amplifier because of the switching working and it's non-linear.
本文主要研究了声光Q开关驱动器的关键模块——高效率E类功率放大器，设计实现了工程样机。
This thesis does research on the key module of Q-switch driver—high efficiency Class-E power amplifier, including the design and implement of the prototype.
类功率放大器是一种新型高效率放大器。
Class E amplifier is a new kind of high-efficiency power amplifier.
射频功率放大器总是要求在一定频率范围内输出一定的功率，同时满足系统的线性度和高效率要求。
For RF PA, always require it can output a certain power within a range of frequency, at the same time meeting the system nonlinear requirements and have high conversion efficiency.
射频功率放大器总是要求在一定频率范围内输出一定的功率，同时满足系统的线性度和高效率要求。
For RF PA, always require it can output a certain power within a range of frequency, at the same time meeting the system nonlinear requirements and have high conversion efficiency.
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