A High Efficiency Bias Condition Optimized Feedforward Power Amplifier with a Series Diode Linearizer(Special Issue on Low-Distortion, High-Power, High-Efficiency Active Device and Circuit Technology)

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概要

• 論文の詳細を見る

• A high efficiency feedforward power amplifier (FFPA) with a series diode linearizer for cellular base stations is presented. In order to achieve the highest overall efficiency of an FFPA, an improved pre-distortion diode linearizer has been used and the bias condition of the main amplifier has been optimized. The optimum bias condition has been derived from the overall efficiency analysis of the FFPA with a pre-distortion linearizer. From measured overall performances of the FFPA, efficiency enhancement of the series diode linearizer has been verified. The developed FFPA achieved the efficiency of 10% and output power of 45.6 dBm at 10 MHz offset Adjacent Channel leakage Power Ratio (ACPR) -50 dBc under Wide-band Code-Division Multiple-Access (W-CDMA) modulated 2 carriers signal. This design method can be also used to optimize the source and load impedances condition of the main amplifier FET.

• 社団法人電子情報通信学会の論文
• 2002-12-01

著者

• HORIGUCHI Kenichi

  Information Technology R&D Center, Mitsubishi Electric Corporation

• Ikeda Y

  Mitsubishi Electric Corporation Information Technology R&d Center

• Ikeda Y

  Mitsubishi Electric Corp. Kamakura‐shi Jpn

• Takagi T

  Optical Interconnection Sumiden Laboratory Rwcp

• TAKAGI Tadashi

  Information Technology R&D Center, Mitsubishi Electric Corporation

• IKEDA Yukio

  Information Technology R&D Center, Mitsubishi Electric Corporation

• ISHIDA Osami

  Information Technology R&D Center, Mitsubishi Electric Corporation

• Takagi T

  Research Institute Of Electrical Communication Tohoku University

• Takagi T

  It-21 Center Research Institute Of Electrical Communications Tohoku University

• NAKAYAMA Masatoshi

  Information Technology R & D Center, Mitsubishi Electric Corporation

• SAKAI Yuji

  Information Technology R & D Center, Mitsubishi Electric Corporation

• TOTANI Kazuyuki

  Information Technology R & D Center, Mitsubishi Electric Corporation

• SENDA Haruyasu

  Information Technology R & D Center, Mitsubishi Electric Corporation

• Takagi Tadashi

  Information Technology R&d Center Mitsubishi Electric Corporation

• Ishida O

  Information And Communications Univ. Daejon Kor

• Ishida Osami

  Mitsubishi Electric Corporation Information Technology R&d Center

• Ishida Osami

  Information And Communications University

• Nakayama M

  Information Technology R & D Center Mitsubishi Electric Corporation

• Senda Haruyasu

  Information Technology R & D Center Mitsubishi Electric Corporation

• Totani K

  Mitsubishi Electric Corp. Amagasaki‐shi Jpn

• Nakayama M

  Laboratory Of Nutrition Chemistry Division Of Bioresource And Bioenvironmental Sciences Graduate Sch

• Horiguchi Kenichi

  Information Technology R & D Center Mitsubishi Electric Corporation

• Sakai Yuji

  Information Technology R & D Center Mitsubishi Electric Corporation

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