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题名:
A 5.5-Ghz SiGe HBT Doherty amplifier using diode linearizer and lumped-element hybrid coupler
作者: Liu, Haiwen1; Yoshimasu, Toshihiko2
刊名: MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
出版日期: 2008-06-01
卷号: 50, 期号:6, 页码:1554-1558
关键词: doherty amplifier ; SiGeHBT ; diode linearizer ; lumped-element coupler
文章类型: Article
英文摘要: A 5.5-GHz Doherty amplifier using commercial 0.35-mu m SiGe HBT technology is proposed in this article. To improve the linearity, a predistortion using diode linearizer is adopted for biasing the peak amplifier. Moreover, to realize in fully on-chip with circuit reduction, a 90 degrees 3-dB hybrid coupler and quarter-wave transmission lines are implemented by lumped-elements. In this design, 819 mu m(2) HBTs are used for carried and peak amplifiers, respectively, and 26 mu m(2) HBT is used for linearizer. Results verify that the power gain, P(1dB), and power added efficiency (PAE) of the proposed Doherty amplifier at 5.5 GHz are 8.4 dB, 31 dBm, and 30%, respectively. Also, the adjacent channel power ratio (ACPR) and the output signal's spectrum mask are given using the 54Mcps 64QAM modulated signal at 10 MHz offset. (c) 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1554-1558, 2008.
WOS标题词: Science & Technology ; Technology ; Physical Sciences
类目[WOS]: Engineering, Electrical & Electronic ; Optics
研究领域[WOS]: Engineering ; Optics
关键词[WOS]: POWER-AMPLIFIER
收录类别: SCI
语种: 英语
WOS记录号: WOS:000255355700032
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/3613
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
2.Waseda Univ, Grad Sch Informat Prod & Syst, Kitakyushu, Fukuoka 8080135, Japan

Recommended Citation:
Liu, Haiwen,Yoshimasu, Toshihiko. A 5.5-Ghz SiGe HBT Doherty amplifier using diode linearizer and lumped-element hybrid coupler[J]. MICROWAVE AND OPTICAL TECHNOLOGY LETTERS,2008,50(6):1554-1558.
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