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An High Integrated Direct Digital Frequency Synthesis System Design

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3 Author(s)
Qingdong Wang ; Sch. of Comput. Sci. & Technol., Huazhong Univ. of Sci. & Technol. ; Changsheng Xie ; Haiwei Wang

This paper researches a programmable signal generator by an high integrated direct digital frequency synthesis (DDFS) technology on FPGA to simulate servo signal for read-write channel of micro hard disk. This device use very large-scale integrated circuit FPGA (field-programmable logic) to integrate PDSP (programmable digital signal processor) for look-up table and integrate DDFS design, use 16 bit high resolution DAC (digital to analog converter) .This device has high precision of frequency, phase and amplitude of output wave, good reliability, little distortion. Compared with general devices, this device can generate all kinds of servo signal, and circuit is simply, reliable, and programmable.

Published in:

Communications and Networking in China, 2006. ChinaCom '06. First International Conference on

Date of Conference:

25-27 Oct. 2006