New high efficiency TV transmitter

  • YOKOMOTO Hiroaki
    Broadcasting And Network Systems Dept. Fuchu Complex TOSHIBA CORPORATION Social Infrastructure Systems Company
  • SHIMIZU Itsuhei
    Broadcasting And Network Systems Dept. Fuchu Complex TOSHIBA CORPORATION Social Infrastructure Systems Company
  • HASUIKE Kenichi
    Broadcasting And Network Systems Dept. Fuchu Complex TOSHIBA CORPORATION Social Infrastructure Systems Company
  • OTSUKI Shunya
    Broadcasting And Network Systems Dept. Fuchu Complex TOSHIBA CORPORATION Social Infrastructure Systems Company
  • MIYANO Mayuko
    Broadcasting And Network Systems Dept. Fuchu Complex TOSHIBA CORPORATION Social Infrastructure Systems Company
  • SAITOU Chikara
    Broadcasting And Network Systems Dept. Fuchu Complex TOSHIBA CORPORATION Social Infrastructure Systems Company
  • ISHIDA Toshihiro
    Broadcasting And Network Systems Dept. Fuchu Complex TOSHIBA CORPORATION Social Infrastructure Systems Company
  • ITAGAKI Hiromu
    Broadcasting And Network Systems Dept. Fuchu Complex TOSHIBA CORPORATION Social Infrastructure Systems Company
  • OONO Hideki
    Broadcasting And Network Systems Dept. Fuchu Complex TOSHIBA CORPORATION Social Infrastructure Systems Company
  • KATO Takao
    Broadcasting And Network Systems Dept. Fuchu Complex TOSHIBA CORPORATION Social Infrastructure Systems Company

Bibliographic Information

Other Title
  • 新型高効率テレビ送信機(学生若手発表および一般)
  • 新型高効率テレビ送信機
  • シンガタ コウコウリツ テレビ ソウシンキ

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Abstract

Digital Terrestrial TV Broadcasting transmitter has 12.5% power efficiency because the OFDM signal used by the Digital Terrestrial Television Broadcasting has large PAPR and needs back-off. By selecting doherty amplifier circuit at the final stage of amplifier circuits of PA (Power Amplifier), and by using GaN HEMT (Gallium Nitride High Electron Mobility Transistor), the new PA has over 30% better efficiency than existing ones. Also, by adopting the DPD (Digital Pre-distortion) suitable for doherty amplifier circuit for the exciter., the new TV transmitter has over 20% better efficiency than existing ones.

Journal

  • ITE Technical Report

    ITE Technical Report 36.10 (0), 65-68, 2012

    The Institute of Image Information and Television Engineers

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