Linearity Analysis of Direct Digital Chirp Synthesizer in the Presence of Amplitude Quantization

摘要：

A simple algorithm is developed for calculating the linearity of the chirp signal generated by a direct digital chirp synthesizer in the presence of amplitude quantization. The linearity and signal to quantization noise ratio (SQNR) for the conventional uniform mid-tread and mid-rise quantizers along with a proposed nonuniform quantizer are evaluated using the algorithm. Numerical results demonstrate that the proposed nonuniform quantizer can improve the linearity by almost one order of magnitude with ignorable SQNR degradation, which makes it an optimal candidate for a direct digital chirp synthesizer compared with the conventional uniform mid-tread and mid-rise quantizers.

作者: Yuan Yao Jianfeng Zheng Zhenghe Feng

作者单位: Tsinghua National Laboratory for Information Science and Technology Tsinghua University, Beijing 100084, China

会议类型: 国际会议

会议名称: 2010 International Conference on Microwave and Millimeter Wave Technology(2010国际微波与毫米波技术会议 ICMMT2010)

会议地点: 成都

会议语种:英文

页码: 902-905

在线出版日期: 2010-05-08（万方平台首次上网日期，不代表论文的发表时间）