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2009•Modern Electronics TechniqueRequires access

Design of Wideband Frequency Synthesizer Based on DDS-Driven PLL

Dong Lifang

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Abstract

By taking advantages of the Direct Digital Synthesizer(DDS) and Phase Locked Loop(PLL),a low spurious,wide band,high resolution triple tuned type frequency synthesizer with AD9954 and ADF4113 is designed.The results which are the simulated data and the measured results on finished product indicate that the technology can obtain its goal.Its specifications show as following: output frequency range 594~999 MHz,step 5 Hz,phase noise-91 dBc/Hz@10 kHz,SFDR-73 dBc,hopping time 520 μs.

About this research paper

What this paper is about

By taking advantages of the Direct Digital Synthesizer(DDS) and Phase Locked Loop(PLL),a low spurious,wide band,high resolution triple tuned type frequency synthesizer with AD9954 and ADF4113 is designed.The results which are the simulated data and the measured results on finished product indicate that the technology can obtain its goal.Its specifications show as following: output frequency range 594~999 MHz,step 5 Hz,phase noise-91 dBc/Hz@10 kHz,SFDR-73 dBc,hopping time 520 μs.

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Available abstract

By taking advantages of the Direct Digital Synthesizer(DDS) and Phase Locked Loop(PLL),a low spurious,wide band,high resolution triple tuned type frequency synthesizer with AD9954 and ADF4113 is designed.The results which are the simulated data and the measured results on finished product indicate that the technology can obtain its goal.Its specifications show as following: output frequency range 594~999 MHz,step 5 Hz,phase noise-91 dBc/Hz@10 kHz,SFDR-73 dBc,hopping time 520 μs.

Key concepts: dBc, Direct digital synthesizer, Phase-locked loop, Spurious-free dynamic range, Frequency synthesizer, Phase noise, Wideband, PLL multibit

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