Analysis and design of switching amplifiers for smartphones by He, Huiqiao

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Wireless secured control system by He, Huiqiao.

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A direct battery hookup filterless pulsewidth modulation class D amplifier with >100 dB PSRR for 100 Hz to 1 kHz, 0.005% THD+N and 16 μv Noise by Ge, Tong, He, Huiqiao, Guo, Linfei, Chang, Joseph Sylvester

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3-state BTL closed-loop PWM Class D amplifiers by He, Huiqiao, Ge, Tong, Guo, Linfei, Chang, Joseph Sylvester

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A 2.5-W 40-MHz-bandwidth hybrid supply modulator with 91% peak efficiency, 3-V output swing, and 4-mV output ripple at 3.6-V supply by He, Huiqiao, Kang, Yang, Ge, Tong, Guo, Linfei, Chang, Joseph Sylvester

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