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All oscillators and signal sources exhibit phase noise of some sort. This reference material is provided to assist in understanding the sources of phase noise, how it is characterized and the effects of phase noise on the performance of communication systems. If you have any comments or questions, please let us know ( feedback@radiolab.com.au ) we would like to hear from you and will do our best to assist. This material may be read sequentially using the NEXT link on each page.
Our apologies - not all sections are available.
What is Phase Noise? What is Phase and Amplitude Noise?. Narrowband Phase and Frequency Modulation Approximations Definition of Single Sideband Phase Noise Spectrum of a VCO Modulated by White Noise
Phase Noise in Receivers Reciprocal Mixing - how LO phase noise affects selectivity. How LO Phase noise affects received SNR - Frequency Modulation Effect of LO phase noise on digital modulation systems
Phase Noise in Transmitters Spectral Masks for transmitters - don't build a jammer! LO Phase Noise results in transmitting a noise signal
Measuring Phase Noise Measuring phase noise using a spectrum analyser Other techniques
Where does Phase Noise come from? Phase noise in oscillators - Leeson Model Extended Leeson Model Minimizing oscillator phase noise. References to Non-Linear analysis
Glossary of Terms
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