Quadrature Direct Digital Frequency Synthesizer with High Compression Ratio
Zhao Zhanfeng, Zhou Zhiquan, Qiao Xiaolin · 2006
This paper presents a new QDDFS architecture with high compression ratio, which based on the principles of non-linear approach and trigonometric approximation. The principles have been analyzed systemically and all the parameters have been optimized. A high compression ratio of 762 at 93.5 dBc in a 16 bit system. The architecture is realized by Quartus-II at maximum clock frequency of 100 MHz. In the end, a proposed architecture is given.