Study On Fast Measurement And Calibration Technology Of Phased Array Antenna

Since the advent of phased array antenna, calibration and measurement of antenna has always been a key topic in the research field of antenna. In this paper, combined with the actual production, the research and analysis of calibration and measurement of phased array antenna phase of. The main performance index of the phased array antenna such as gain, beam width and sidelobe level are by the antenna aperture amplitude and phase distribution to decide, so to the antenna characteristics analysis should proceed from the magnitude and phase, because the antenna using space feed working mode, antenna design and processing is completed, the amplitude distribution of the antenna basic unable to change, only through the phase adjustment to the performance of the antenna to improve. How to make the antenna phase distribution to achieve the best condition, we introduced phase of work, in order to ensure the performance of phased array antenna can meet the design requirements. This paper mainly focuses on the following aspects for antenna measurement and calibration techniques:Firstly, for the generation and application of the antenna is described, which made the antenna measurement and calibration technology, meaning and purpose, combined with technical achievements in the antenna measurement and calibration of proposed technology research ideas in this article.Secondly, the theory of the antenna and constituting the system description, including the feeding of an antenna constituting,, wavefront, the phase shifter and the scanning theory and technical characteristics of the antenna and the like.Thirdly, the introduction of measuring the characteristics of phased antenna, proceed from the error, the analysis of the types of errors, the causes and the impact of the error on the amplitude and phase of the antenna, so as to arrive errors on antenna performance.Fourthly, the phase angle from start to introduce the concept phase, describes the principles and methods of measuring relative phase measurement, combined with actual work, given the specific phase measurement and calibration methodsFifthly,articles from far-field antenna measurement chart Square paper introduces a far-field measurements of conditions, principles and specific measurement methods, combined with pattern simulation technology direction for the antenna phase conditions at different far-field measurements and simulation map, under phase contrast conditions in different pattern technical indicators obtained optimum phase state distribution of the antenna, the antenna in order to ensure normal operation of tactics can.Systematic research articles from the side, to guide the production, improve work efficiency has great practical significance.