Research And Application Of Digital Amplitude And Phase Measurement Technology Based On RF Integrated Transceiver

With the rapid development of microwave technology,the demand for research and development of new microwave devices is constantly increasing,and the demand for fast and accurate measurement of various parameters of newly developed microwave devices is also increasing.The amplitude and phase of the microwave signal are two basic measurement parameters,and other microwave parameters can be obtained through the measurement of these two parameters.At the same time,with the development of digital radio frequency technology and VLSI,microwave signal amplitude and phase measurement based on programmable microwave integrated transceiver and fully programmable system-on-chip has high measurement accuracy,high integration,strong reliability and repeatability.It has the advantages of strong configuration and so on,which has very important research significance.The main content of this thesis is to carry out research on digital amplitude and phase measurement technology based on integrated transceivers,conduct in-depth research on digital amplitude and phase measurement algorithms,and design a miniaturized,lowcost,High-precision full on-chip programming digital amplitude and phase measurement system,and realize the high reusability of the measurement system through the cooperation of software and hardware.The specific work content includes:1.Conduct in-depth research on digital amplitude and phase measurement theory,simulate the amplitude and phase measurement accuracy of digital amplitude and phase measurement algorithms,including digital synchronous demodulation algorithms,correlation algorithms and fast Fourier transform algorithms,and study Gaussian white noise and harmonics The impact of noise on the accuracy of amplitude and phase measurement,and explore the use of digital filtering to reduce the impact of noise and improve the accuracy of amplitude and phase measurement.2.According to the design of the digital amplitude and phase measurement system,hardware selection is required.Using programmable RF front-end and heterogeneous system-on-chip,the digital amplitude and phase measurement system is preliminarily designed based on the GNU Radio platform using software radio development methods,and the integration-based Design feasibility of digital amplitude and phase measurement system of transceiver and performance of digital amplitude and phase measurement algorithm.3.Based on AD9361 and ZYNQ XC7Z020,the full on-chip programming digital amplitude and phase measurement system design is carried out,the architecture design and module realization of the PL programmable logic part are carried out,and the embedded software design is carried out on the PS ARM Cortex A9 dual-core processor part,including the AD9361 radio frequency Parameter configuration,digital signal processing algorithm design,and external interrupt processing system design,etc.,have applied related algorithms and fast Fourier transform algorithms,and realized the full onchip operation of the digital amplitude and phase measurement system.4.The amplitude and phase measurement errors of the designed microwave signal amplitude and phase measurement system were analyzed,as well as the dynamic range of measurement.It was found that the dynamic range of the system is ≥50dB,the amplitude measurement error is ≤±0.075dB,and the phase measurement error is ≤±0.75°;And based on this system,a W-band spatial field amplitude and phase measurement system was built.By measuring the amplitude and phase spatial fields of the W-band standard gain horn antenna,the actual measurement results were in good agreement with the HFSS theoretical calculation values,indicating that the system has good accuracy and stability.