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- W3048755295 abstract "Aiming at correcting the error caused by the nonlinear and power supply noise of the bridge-tied-load (BTL) power stage of the filterless digital class D power amplifier, an error correction method was proposed based on feedforward power supply noise suppression (FFPSNS) and first-order closed loop negative feedback (FCLNF) techniques. This method constructed the first-order LCLNF loop for the power stage and further reduced the impact of the power supply noise on the power amplifier output by using FFPSNS technology to introduce the power supply noise into the feedback loop at the same time. The 0.35 μ m CMOS process is used for analysis and comparison in Cadence. Cadence simulation results indicate that PSRR at the power supply noise frequency of 200 Hz is improved with 36.02 dB. The power supply induced intermodulation distortion (PS-IMD) components are decreased by approximately 15.57 dB and the signal-to-noise ratio (SNR) of the power amplifier is increased by 17 dB. The total harmonic distortion + noise (THD + N ) of the power amplifier is reduced to 0.02% by FCLNF + FFPSNS." @default.
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- W3048755295 date "2020-08-12" @default.
- W3048755295 modified "2023-10-16" @default.
- W3048755295 title "Improved Error Correction Methods for Filterless Digital Class D Audio Power Amplifier Based on FCLNF" @default.
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- W3048755295 doi "https://doi.org/10.1155/2020/5914062" @default.
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