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A New Scheme of Designing Frequency Synthesizer with Low Output Stray

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Abstract:

In traditional frequency synthesizers, there is a frequency synthesis module for every output channel, so there is crosstalk between output channels. The more the output modules, the more is the crosstalk. Deeply researching shows that the crosstalk between output modules has most of the influence on output stray [2,. To improve the output stray, a new scheme of designing frequency synthesizer with low output stray is given in this paper. In the new scheme, there is only one frequency synthesis module for all outputs. The output of the module is divided into several outputs by the power divider. Then these outputs directly input to the output modules. In this way, the crosstalk between the frequency synthesis modules can be effectively avoided, and the output stray can be significantly reduced. On the other hand, the volume and the cost of the synthesizer is reduced. Simulation result shows that the new scheme can meet the requirements of low output stray.

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Info:

Periodical:

Advanced Materials Research (Volumes 846-847)

Pages:

818-821

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.846-847.818

Citation:

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Online since:

November 2013

Authors:

Jie Ren*, Jun Gang Miao, Jin Zhang

Keywords:

Frequency Division, Frequency Synthesizer, Indirect (Single Feedback PLL) Frequency Synthesis, Low Stray

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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References

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