べき指数を任意の値に変更できるべき乗変換回路

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  • 新井 将広
    東洋大学大学院 理工学研究科 電気電子情報専攻
  • 佐野 勇司
    東洋大学大学院 理工学研究科 電気電子情報専攻

書誌事項

タイトル別名
  • Exponentiation Conversion Circuit Capable of Changing the Power Exponent to Any Value
  • ベキ シスウ オ ニンイ ノ アタイ ニ ヘンコウ デキル ベキ ジョウヘンカン カイロ

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<p>An exponentiation conversion circuit, which can be changed its power exponent to any value to compensate nonlinearity in electronic devices, is proposed. In the proposed circuit, new exponential conversion circuit converts signal multiplied logarithmically transformed input signal by the power exponent value, thereby obtaining the exponential power raised power function characteristic. The proposed circuit is a small scale circuit by utilizing an exponential characteristic in the subthreshold operation of MOSFET. For example, proposed circuit is suitable for integrating on a microcomputer chip used for IoT. The performance of the circuit was evaluated by prototype IC made by 0.6 µm CMOS process. In circuit simulation of the prototype IC, the exponent could be varied in the range of 0.038 to 2.46. By proposing the cascode exponential conversion circuit, the signal dynamic range was expanded.</p>

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