栅栏
计算机科学
天线阵
天线(收音机)
偶极子天线
偶极子
反射系数
光学
物理
拓扑(电路)
电信
电气工程
工程类
量子力学
作者
Yuanren Ma,Shiwen Yang,Yikai Chen,Shi‐Wei Qu,Jun Hu
标识
DOI:10.1109/tap.2020.2985383
摘要
An innovative architecture for sparsely excited tightly coupled dipole arrays is proposed, based on the irregular array techniques. In such a framework, an improved maximumentropy model considering the difference of embedded element patterns is applied to optimize the irregular partition to suppress the grating lobes. Meanwhile, guidelines for the entire design procedure including antenna elements, power dividers, and optimization design of irregular feeding networks are presented. In order to achieve large elevation angle scanning, the differential evolution (DE) algorithm is used to synthesize active pattern and active reflection coefficient simultaneously. Finally, a 192-port prototype operating at 8-12 GHz has been fabricated and measured, where the port spacing is 0.576λ h (λ h is the free-space wavelength at the highest frequency). Numerical and experimental results show that the prototype array is able to achieve the reduction of gain <; 1 dB for scanning to near broadside and about 2.7 dB for scanning up to 60°, in comparison with that of conventional Taylor arrays.
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