摘要
提出了一种缩减大规模可重构天线开关数目以降低复杂度的方法,同时并不明显降低天线的可重构能力。该方法通过剔除对天线可重构能力贡献较小的开关来实现,最终只保留在天线重构过程中起到重要作用的开关。开关的重要性采用反射系数包络线相关函数来表征。为了验证该方法,仿真了一款具有40个开关的可重构微带天线。用该方法将开关的数目缩减到8个之后,天线仍然能够完全覆盖所研究的频段范围,同时保持重构的反射系数优于-20d B。
This paper proposes a new method of characterizing reconfigurable antennas for reducing its complexity while still maintaining its reconfigurability. The proposed method is performed by removing the less important switches of a conventional reconfigurable antenna. Therefore,the proposed antenna only has the switches that play important roles in the reconfigurability. The importance of each switch is evaluated by the correlation coefficient of the two envelopes of frequency responses of the antenna. To verify the concept of this approach,a frequency configurable antenna is simulated. After reducing the switch number of the antenna from 40 to 8,the final structure still has a reconfigurable coverage of reflection coefficients which are less than- 20 d B within the band of 1. 7 ~ 2. 7GHz.
出处
《微波学报》
CSCD
北大核心
2015年第4期26-29,共4页
Journal of Microwaves
关键词
复杂度
相关系数
多端口网络
大规模可重构天线
complexity,correlation coefficient,multi-port network,large-scale reconfigurable antenna
