Abstract
In this paper, the principal and application of digital frequency synthesizer are analyzed firstly. Then, the phase truncation error of phase accumulator is discussed theoretically and is eliminated by the real-time scrambling code from Linear Feedback Shift Registers (LFSR) for the purpose of engineering. At last, a new method combined difference method with coarse and fine lookup table (LUT) is proposed to reduce the length and amplitude of LUT. From the simulation of the new method, it is found that the LUT is reduced from 2^14*16 bit to2^10*14 bit and 2^14*7 bit. Also, the spurious free dynamic range of the power of output signal is more than 100dBc.The method can meet the request of project efficiently and save a lot of cost.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.