Role of intermodulation in fractional-N frequency synthesiser spectral purity |
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| Authors: | Brennan P.V. Jiang D. Zhang J. |
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| Affiliation: | Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK; |
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| Abstract: | Two techniques for modelling intermodulation-borne spurious components in fractional-N frequency synthesisers are described. The first techniques establishes the potential frequencies of these components, while the second considers a more comprehensive model to predict their distribution in a realistic system as a result of one particular intermodulation mechanism. Good agreement is found and it is apparent that intermodulation is likely to be a major cause of such spurious components. |
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