多层微带贴片天线单元和阵列设计
design of multi-layer microstrip antenna and arrays
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摘要: 该文通过结合经验公式和全波分析法,设计了一种电容补偿双层贴片、四层介质的微带贴片天线单元,该单元天线在频率为995～1125MHz的范围内,在驻波比SWR1.5的情况下,相对阻抗带宽达到12.26％的工程要求。此外,该文给出由该单元天线组成的216天线阵以及天线阵的驻波比的实测结果,最后给出天线阵的各单元排列方式和单元之间的互耦特性曲线的实测结果。
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关键词:
- 微带天线; 天线阵; 驻波比; 互耦
Abstract: A stacked double-patch and four-layer substrate microstrip antenna with the capacitance compensation probe feed is designed by combining the experimental formulae and the full-wave method. The relative impedance bandwidth of this microstrip antenna reaches up to 12.26% in the frequency band between 995MHz and 1125MHz under the condition that SWR is less than 1.5. In addition, a 2*16 array composed by this kind of microstrip antenna is presented and the experimental results of the SWR are given too. Finally, the arrangement of elements in the antenna array and the experimental results of the mutual coupling between elements are given. -
D.M. Pozar, B. Kaufman, Increasing the bandwidth of a microstrip antenna by proximity coupling, Electronics Letters, 1987, 23(9), 368 369.[2]徐健,重叠微带贴片天线的理论分析与实验研究,[博士论文],北京,北京理工大学,1993,9 ［3］刘章发,宽频带微带天线的设计与相控阵扫描特性的研究,[博士论文],北京,北京理工大学,1996,7.[3]刘庭华,双层微带贴片天线单元的实验研究,现代雷达,1997,19(3),54-60.[4]Naftali Herscovici, A wide-band single-layer patch antenna, IEEE Trans. on Antennas Propagat.,1998, AP-46(4), 1108-1111.[5]钟顺时,微带天线的理论与应用,西安,西安电子科技大学出版社,1991,11-16.[6]李世智,电磁辐射与散射问题的矩量法,北京,电子工业出版社,1985,130-138. -
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