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Design of Handheld Phase Noise Measurement System

Author: ZhuLing
Tutor: ChenXiaoLong
School: Xi'an University of Electronic Science and Technology
Course: Measuring Technology and Instruments
Keywords: Handheld DSP Phase noise measurement
CLC: TM937.4
Type: Master's thesis
Year: 2013
Downloads: 7
Quote: 0
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Abstract


Phase noise is an important indicator to describe the stability of the signalfrequency, as well as the key part in signal analysis and testing. Accurate measurementof the phase noise is of great significance.The paper briefly expounds the concept of the phase noise and its differentcharacterizations in time domain and frequency domain. Common methods of phasenoise measurement and principles of those methods are introduced. Based ontraditional methods of measurement, the paper raises a hand-held phase noisemeasurement system which is based on embedded system. Phase discrimination part ofthe system is completed by analog phase detector, and the processing is accomplishedby FPGA, DSP and ARM working together. The advantages digital system such asflexibility, strong anti-interference, good reliability, and high accuracy are remained.Meanwhile, requirement for ADC sampling rate and complexity of algorithm arereduced. Adding signal processing and human-machine interaction to the embeddedplatform can get rid of the spectrum analyzer and PC. Compared with traditionalmeasurement methods, the hand-held phase noise measurement system is small in size,low in cost and perfect in innovation and practicality.The paper finished the overall program demonstration, design and implementationof the hardware platform, and test software. Currently, the platform has been validated,it can achieve the basic function of the phase noise measurement, provided theconditions for further research.

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CLC: > Industrial Technology > Electrotechnical > Electrical measurement techniques and instruments > Measurement and instrumentation of the electromagnetic field strength ( signal strength ) > Noise measurement,noise meter
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