Intermodulation products in the EER technique applied to Class-E amplifiers

被引：0
|
作者：
Milosevic, D [1 ]
van der Tang, J [1 ]
van Roermund, A [1 ]
机构：
[1] Eindhoven Univ Technol, NL-5600 MB Eindhoven, Netherlands
来源：
2004 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL 1, PROCEEDINGS | 2004年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Envelope Elimination and Restoration is a relatively old but attractive transmitter technique for high efficiency linear amplification of variable envelope RF signals. EER employs switching mode power amplifiers, which are extremely nonlinear but efficient, and the concept of supply voltage modulation to achieve linear performance. The bandwidth limitations in the envelope modulation path will have a strong impact on performance of the whole EER system. This paper derives analytic relationships between the transfer function in the envelope path of the EER system and IMD products in the output signal. The derived expressions are of generic character and can be used for an arbitrary transfer function in the envelope path. An estimation of the theoretical limit for IMD levels in the EER system based on the Class-E amplifier is given.
引用
收藏
页码：637 / 640
页数：4
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