An L-Band Low Spurious Multi-Tuned Frequency Synthesizer

Fei Yan Mu; Bao Sheng Ye; Jie Lin; Zhong Jian Kang

doi:10.4028/www.scientific.net/AMR.850-851.441

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 850-851An L-Band Low Spurious Multi-Tuned Frequency...

An L-Band Low Spurious Multi-Tuned Frequency Synthesizer

Abstract:

This paper designs an L-Band 1880-1980 MHz low spurious Multi-tuned frequency synthesizer. The frequency source utilizes a DDS to directly stimulate a PLL, which makes a balance between the DDS and the PLL complementary to each other, realizing better specifications. Meanwhile, in order to achieve better spurious suppression with wide loop bandwidth, a method based on triple tuned algorithm is introduced. This algorithm avoids the high level spurious components triggered by the DDS falling in PLL’s bandwidth, refining the structure of the DDS-directly-stimulating PLL circuit frequency lock time and spurious to improve performance. The simulation result shows that the frequency source achieves a frequency range of 1880MHz～1980MHz, a frequency resolution of 1MHz, a spur better than 80dBc, a phase noise of -103dBc/Hz@100kHz and a frequency lock time less than 2 μs.

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Periodical:

Advanced Materials Research (Volumes 850-851)

Pages:

441-444

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.850-851.441

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Online since:

December 2013

Authors:

Fei Yan Mu*, Bao Sheng Ye, Jie Lin, Zhong Jian Kang

Keywords:

DDS, Frequency Synthesizer, Low Spurious, Triple Tuned Algorithm

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* - Corresponding Author

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