Power-Combining Class-E Amplifier With Finite Choke

被引：15
作者：
Thian, Mury [1 ]
Fusco, Vincent [1 ]
Gardner, Peter [2 ]
机构：
[1] Queens Univ Belfast, Belfast BT7 1NN, Antrim, North Ireland
[2] Univ Birmingham, Birmingham B15 2TT, W Midlands, England
来源：
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS | 2011年 / 58卷 / 03期
基金：
英国工程与自然科学研究理事会;
关键词：
Balun; Class-E; finite choke; GaAs MESFET; harmonic suppression; high efficiency; power amplifier (PA); power combiner; switching amplifier; transformer; transistor circuits; transmission line; DESIGN;
D O I：
10.1109/TCSI.2010.2072250
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：
A recently introduced power-combining scheme for a Class-E amplifier is, for the first time, experimentally validated in this paper. A small value choke of 2.2 nH was used to substitute for the massive dc-feed inductance required in the classic Class-E circuit. The power-combining amplifier presented, which operates from a 3.2-V dc supply voltage, is shown to be able to deliver a 24-dBm output power and a 9.5-dB gain, with 64% drain efficiency and 57% power-added efficiency at 2.4 GHz. The power amplifier exhibits a 350-MHz bandwidth within which a drain efficiency that is better than 60% and an output power that is higher than 22 dBm were measured. In addition, by adopting three-harmonic termination strategy, excellent second-and third-harmonic suppression levels of 50 and 46 dBc, respectively, were obtained. The complete design cycle from analysis through fabrication to characterization is explained.
引用
收藏
页码：451 / 457
页数：7
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