Ultra-Wideband Doherty-Like Power Amplifier

被引：0
|
作者：
Saad, Paul [1 ]
Hou, Rui [1 ]
Hellberg, Richard [1 ]
Berglund, Bo [1 ,2 ]
机构：
[1] Ericsson AB, S-16480 Stockholm, Sweden
[2] Chalmers Univ Technol, S-41296 Gothenburg, Sweden
来源：
2018 IEEE/MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM - IMS | 2018年
关键词：
Distributed; Doherty; energy efficiency; wideband; multiband; high-PAPR; GaN-HEMT; power amplifier; DESIGN; ARCHITECTURE; EFFICIENCY;
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：
This paper presents an innovative technique, distributed efficient power amplifier (DEPA), that is suitable for wideband/multiband applications using signals with large Peakto- Average-Power-Ratio (PAPR). DEPA replaces the auxiliary amplifier of the conventional Doherty PA (DPA) by N auxiliary sub-amplifiers distributed along an output combiner made of N line sections and eliminates the load modulation associated with conventional DPA. A wideband DEPA demonstrator is designed to cover most of the wireless communications bands within two-octave bandwidth 0.65-2.6 GHz. The experimental results show that the efficiency levels are between 41-59% and 52-66% for output power levels at 9 dB OBO and peak output power, respectively. Linearized modulated measurements using five 10MHz LTE carriers with 9 dB PAPR show an adjacent channel leakage ratio (ACLR) below -51 dBc.
引用
收藏
页码：1215 / 1218
页数：4
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