Phase Noise Measurement of Microwave Oscillator Using Interferometric Technique and Cross Correlation Method

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hadaegh, Mostafa | 2012

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 43450 (05)
University: Sharif University of Technology
Department: Electrical Engineering
Advisor(s): Banai, Ali
Abstract:
In this thesis interferometric method is used in the frequency discriminator based on classic delay line technique for phase noise measurement of microwave oscillators at X-band. In this method no reference oscillator is needed for phase noise measurement. Beacause of carrier suppression, we can use low noise amplifier in linear regimeandthereforethe added noise to the phase detector, is reduced and the sensitivity of the system is improved consequently. Moreover cross correlation method isapplied to improve the sensitivity of classic delay line frequency discriminator technique. It has been shown that up to 15 dB improvement is achievable at far from carrier offsets.
Keywords:
Phase Noise Measurment ; Interferometric Method ; Cross Correlation ; Delay Lines

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