An Advanced Spread Spectrum Architecture To Improve EMI Emissions In Class D Amplifier

摘要：

With the purpose of reducing the out-of-band noise, an advanced digital spread spectrum technique used in monolithic Class D amplifiers with a lower-frequency reference signal is proposed in this paper, which improves an interference problem when radio equipment is independently designed. The peak-level of the measured out-of-band noise is 12dB lower than that in a fixed frequency class D by control strategies utilizing pseudo random codes. The active area of the circuit is about 191*251μm2 and the maximal power consumed is only 2.8μA.

作者: Ming Xin Chen Zao Zhou Ze-kun Zhang Bo

作者单位: State key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu, Sichuan, China

会议类型: 国际会议

会议名称: 2009国际通信电路与系统学术会议(ICCCAS 2009)(2009 International Conference on Communications，Circuits and Systems)

会议地点: 成都

会议语种:英文

页码: 661-665

在线出版日期: 2009-07-23（万方平台首次上网日期，不代表论文的发表时间）