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Active phased array radar antenna technology in a number of studies and simulation

Author: JiaFeiFei
Tutor: YangFeng；WangYuanLing
School: University of Electronic Science and Technology
Course: Software Engineering
Keywords: Active Phased Array Antenna Quantization error Conformal array Broadband microstrip antenna
CLC: TN958.92
Type: Master's thesis
Year: 2010
Downloads: 263
Quote: 2
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Abstract


Active phased array radar capable of detecting distance, multi-target tracking precision is high, anti-jamming and stealth performance, easier conformal features, more and more emphasis on individual countries. In recent years, various countries have launched their own active phased array radar system. Given the active phased array radar study the significance of this issue for a few of them to do a more in-depth research. First, for practical engineering applications encountered active phased array radar digital phase shifter quantization error problem do the research, quantization error introduced mathematical model and the traditional ways of doing random phase feeding simulation analysis to Method two possible values ??of the simulation results. Simulation found that random phase feeding method, although to some extent compensate for the phase quantization done, but because of the randomness of the algorithm, there is still a great opportunity to appear poor results. So the introduction of particle swarm algorithm for randomizing phase feeding optimized algorithm only once to get good results, to ensure that every operator can reach the actual application requirements, to avoid poor results may occur, and finally through Typical plane array and linear array simulation proved its superiority. Secondly, based on active phased array features easy-conformal simulation designed a cone-shaped carrier of microstrip antenna array. Starting from the general design of microstrip antenna, first designed two work in the X-band coaxial feed microstrip antenna and reactance loading edge fed microstrip antenna, the final selection process easier, more convenient conformal coaxial feed do conformal microstrip antenna array is an array of elements. The antenna used on conformal conical carrier, found the carrier while the circumferential curvature changes the resonant frequency of the antenna also has a larger change, so the location for the antenna carrier circumferential curvature, adjust the size of each antenna and feed position, reaching Adjust the entire array antenna operating frequency purposes. The antenna is designed based on $ 16 per linear conformal conical carrier and a 4 × 4 vehicle conformal conical surface array, and the introduction of non-dominated genetic algorithm is designed for an array pattern synthesis, simulation results, the results show NSGA can be taken into account when the carrier conformal case, to achieve the desired effect. Finally, this paper designed a work in X-band, with a 27% bandwidth broadband microstrip antenna. Open on the patch antenna is U-shaped groove structure, by optimizing the U-shaped groove width, the groove length of the operating bandwidth of the antenna broadening. The antenna will be used for the text of conformal cylindrical carrier design, the design of a 16 yuan of conformal linear array. Found through simulation, in the case of the cylindrical carrier, the antenna has a good impedance characteristics and radiation characteristics.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radar > Radar: institutional sub- > Phased array radar
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