30.3% PAE HBT Doherty Power Amplifier for 2.5∼2.7 GHz Mobile WiMAX

被引：0
|
作者：
Kang, Daehyun [1 ]
Choi, Jinsung [1 ]
Kim, Dongsu [1 ]
Yu, Daekyu [2 ]
Min, Kyoungjoon [2 ]
Kim, Bumman [1 ]
机构：
[1] Pohang Univ Sci & Technol, Dept Elect Engn, San 31, Pohang 790784, Gyeongbuk, South Korea
[2] Wireless Power Amplifier Module Inc, Gyeongi 463824, South Korea
来源：
2010 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST (MTT) | 2010年
关键词：
Doherty; Broadband; efficient; lineaer; handset; hetero-junction bipolar transistors (HBT); linear; MMIC; power amplifier (PA); HIGH-EFFICIENCY; DESIGN;
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：
The Doherty power amplifier for mobile WiMAX application is fully integrated in 1.2 x 1.2 mm(2) using a 2-mu m InGaP/GaAs HBT process. The direct input power dividing technique is employed on a chip. Broadband input and output matching techniques are used for broadband Doherty operation. A 1.5 times larger peaking amplifier than carrier amplifier is used to have high efficiency for IEEE 802.16e m-WiMAX signal, which has 9.6 dB crest factor and 8.75 MHz bandwidth. The PA with a supply voltage of 3.4V has an EVM of 2.3% and a PAE of 31.5% at an output power of 24.75 dBm and an operating frequency of 2.6 GHz. The PAE of over 30.3% and the output power of over 24.6 dBm with the EVM of lower than 3.15% and the gain variation of 0.2 dB are achieved across 2.5 similar to 2.7 GHz without any assistant technique for linearization.
引用
收藏
页码：796 / 799
页数：4
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