介质加盖高增益微带天线的优化
OPTIMUM DESIGN OF HIGH GAIN MICROSTRIP ANTENNAS COVERED WITH DIELECTRIC LAYERS
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摘要: 本文提出了利用点源增益优化方法设计介质加盖的高增益微带天线的方法,所确定的各介质层的电厚度能保证天线取得最高的增益。同时优化计算量也成倍减少。所设计的一个两层介质加盖微带天线的最高增益达到16.8dB。分析结果还表明,在一定条件下,增益和效率是可以兼顾的,用加盖的方法提高天线增益的同时仍可使天线具有较高的辐射效率。
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关键词:
- 微带天线; 高增益; 介质加盖
Abstract: In this paper an optimum design method for high gain microstrip antenna covered with dielectric layers is proposed. In the method, the moment method and optimization for the gain of a point source model are used to find the optimum thickness for every dielectric layer, so that the highest antenna gain can be acquired. Besides, the use of point source model much decreased the computation needed in the method. The calculated results also show that the high gain microstrip antennas covered with dielectric layers can still have rather high radiation efficiency. -
张均,等.微带天线理论与工程.北京:国防工业出版社,1988年7月.[2]Jackson D R, Alexoponlog N G. Gain enhancement methods for printed circuit antennas. IEEE Trans. on Antennas and Propagat., 1985, AP-33(3): 976-987.[3]Yang H Y, Alexopoulog N G. Gain enhancement methods for printed circuit antennas through multiple superstrates. IEEE Trans. on Antennas and Propagat., 1987, AP-35(7): 860-863.[4]孟庆翔.矩形微带天线的特性分析及有关并矢格林函数的研究:[博士论文].华东师范大学,1990.[5]Bahl, et al. Design of microstrip antennas covered with a dielectric layer. IEEE Trans. on Antennas and Propagat., 1982, AP-30(2): 314-318. -
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