Intrinsic Distortion of a Fully Differential BD-Modulated Class-D Amplifier With Analog Feedback

@article{Cox2013IntrinsicDO,
  title={Intrinsic Distortion of a Fully Differential BD-Modulated Class-D Amplifier With Analog Feedback},
  author={Stephen M. Cox and Jun Yu and Wang Ling Goh and Meng Tong Tan},
  journal={IEEE Transactions on Circuits and Systems I: Regular Papers},
  year={2013},
  volume={60},
  pages={63-73}
}
This paper presents a mathematical analysis of a fully differential BD-modulated Class-D amplifier with analog feedback, i.e., one having a bridge-tied-load output configuration with negative feedback and ternary PWM signal. Notwithstanding the highly nonlinear nature of the amplifier's operation, an extremely accurate closed-form expression for the audible output signal is derived and verified based on computer simulations. This expression demonstrates that there exist larger high-order… CONTINUE READING
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