High Efficiency AlGaAs/GaAs Power HBTs at a Low Supply Voltage for Digital Cellular Phones (Special Issue on Microwave and Millimeterwave High-power Devices)
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概要
- 論文の詳細を見る
We present a high performance AlGaAs/GaAs power HBT with very low thermal resistance for digital cellular phones. Device structure with emitter air-bridge is utilized and device layout is optimized to reduce thermal resistance based on three-dimensional thermal flow analysis, and in spite of a rather thick substrate (100μm), which achieved a low thermal resistance of 230℃/W for a multi-finger (4×40μm^2×40 fingers) HBT. This 40 finger HBT achieved power added efficiency (PAE) of over 53%, 29.1dBm output power (P_ltoutgt) and high associated gain (G_a) of 13.5dB with 50kHz adjacent channel leakage power ( P_ltadjgt) of less than -48dBc under a 948MHz π/4-shifted QPSK modulation with 3.4V emitter-collector voltage. We also investigated the difference of RF performance between two bias modes (constant base voltage and current), and found which mode is adequate for each stage in several stage power amplifier for the first time.
- 社団法人電子情報通信学会の論文
- 1997-06-25
著者
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MORI Kazutomi
Information Technology R&D Center, Mitsubishi Electric Corporation
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三浦 徹
北大院・地球環境
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Mori Kazutomi
Information Technology Rampd Center Mitsubishi Electric Corporation
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Miura C
Jst‐presto Jpn
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TANINO Noriyuki
Optoelectronic and Microwave Devices Laboratory, Mitsubishi Electric Corporation
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Mori Kazutomi
Information Technology R&d Center Mitsubishi Electric Corporation
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OTSUBO Mutsuyuki
Optoelectronic and Microwave Devices Laboratory, Mitsubishi Electric Corporation
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SHIMURA Teruyuki
Optoelectronic & Microwave Devices Lab., Mitsubishi Electric Corporation
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Hattori Ryo
High Frequency And Optical Semiconductor Division Mitsubishi Electric Corporation
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Hattori Ryo
High Frequency & Optical Semiconductor Div. Mitsubishi Electric Corporation
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Tanino Noriyuki
Optoelectronic And Microwave Devices Laboratory Mitsubishi Electric Corporation
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MIURA Takeshi
Optoelectronic and Microwave Devices Laboratory, Mitsubishi Electric Corporation
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UNEME Yutaka
Optoelectronic and Microwave Devices Laboratory, Mitsubishi Electric Corporation
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NAKANO Hirofumi
High Frequency and Optical Semiconductor Division, Mitsubishi Electric Corporation
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INOUE Akira
Optoelectronic and Microwave Devices Laboratory, Mitsubishi Electric Corporation
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Shimura Teruyuki
High Frequency And Optical Device Works Mitsubishi Electric Corporation
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Otsubo Mutsuyuki
Optoelectronic And Microwave Devices Laboratory Mitsubishi Electric Corporation
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Uneme Yutaka
Optoelectronic And Microwave Devices Laboratory Mitsubishi Electric Corporation
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Nakano Hirofumi
High Frequency And Optical Semiconductor Division Mitsubishi Electric Corporation
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Inoue Akira
High Frequency And Optical Semiconductor Division Mitsubishi Electric Corporation
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Tanino Noriyuki
Optoelectronic amp Microwave Devices Laboratory, Mitsubishi Electric Corporation
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INOUE Akira
High Frequency & Optical Device Works, Mitsubishi Electric Corporation
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