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http://dx.doi.org/10.5515/KJKIEES.2014.25.12.1243

A Wideband DDS Module for High-Speed Frequency Synthesizer  

Park, Beom-Jun (Agency for Defense Development)
Park, Dong-Chul (Department of Radio Science & Engineering, Chungnam National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.25, no.12, 2014 , pp. 1243-1250 More about this Journal
Abstract
In this paper, a wideband DDS module covering the frequency range from 0.5 to 1.1 GHz was designed and fabricated. The clock frequency of the DDS was selected 2.4 GHz in order for 600 MHz output bandwidth. Multiple spurious cancelling signals having same amplitude and $180^{\circ}$ phase difference compared to the spurious were created at the additional path and added to the output signal within DDS for the spurious performance improvement. The fabricated DDS module showed better spurious performance than the commercial DDS one more than 10 dB and frequency tuning time was 340 ns below.
Keywords
Wideband Synthesizer; DDS; Spurious Cancellation;
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  • Reference
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