D級アンプのEMIと歪みの低減に関する研究

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2016/01/01

タイトル(英語): Study on Reduction of EMI and Distortion in Class D Amplifier

著者名: 佐野　勇司（東洋大学 理工学部電気電子情報工学科），小峰　直樹（東洋電装（株） テクニカルセンター），五十嵐　拓也（アイコム（株） ソリューション事業部），篠永　英之（東洋大学 理工学部電気電子情報工学科）

著者名(英語): Yuji Sano (Department of Electrical, Electronic and Communications Engineering, Faculty of Science and Engineering, Toyo University), Naoki Komine (Toyo Denso Co., Ltd. Technical Center), Takuya Igarashi (Icom Inc. Solution Department), Hideyuki Shinonaga (Department of Electrical, Electronic and Communications Engineering, Faculty of Science and Engineering, Toyo University)

キーワード: D級アンプ，ノイズ，EMI，歪み，THD　　Class D amplifier，Noise，EMI，Distortion，THD

要約(英語): Class D amplifier, which uses differential output signal between PWM pulses compensated difference of delay, which are obtained from input signal and from inversed input signal, is proposed. Proposed class D amplifier is shown to reduce amplitude of the differential output pulse to half. After the difference of delay was compensated, odd number harmonics noise from the differential output pulse was able to be reduced by more than 41 dB. Furthermore, harmonic distortion in the output signal was able to be reduced by more than 16 dB, and also its THD was reduced to 0.38 times and became to less than half of conventional circuit. The proposed circuit can be configured only by applying small modification to small-signal stage in integrated circuit. In addition to the reduction of EMI, there is an advantage in use of miniaturized components for LPF, because the output pulse frequency is able to be increased double of conventional in same sampling rate.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.136 No.1 （2016） 特集：電子回路関連技術

本誌掲載ページ: 28-35 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/136/1/136_28/_article/-char/ja/