利用新型EBG结构消除相控阵天线扫描盲点

Elimination of Scan Blindness in Phased Array Using a New Kind of EBG Structure

在印刷天线中,已经证明了高阻表面基板可以有效地减少表面波激励。该文研究了利用高阻表面基板的微带相控阵天线的性能。研究结果表明,利用高阻表面基板可以消除相控阵天线扫描盲点。提出了一种新颖且有效的高阻表面结构,并在高介电常数的基板上基于该结构设计及仿真了由同轴线馈电6×6的微带相控阵天线。仿真结果表明,提出的高阻表面结构可以有效地改善微带相控阵天线的性能。

High- impedance surface of microwave photonic crystals substrate has been proven to be an effective way to reduce the surface wave excitation. This paper investigates the performance of a microstrip antenna phased array with high- impedance surface substrate. The results show that the use of high- impedance surface substrate can eliminate the scan blindness in a phased array. This paper presents a novel and efficient structure of high- impedance surface. A microstrip antenna phased array fed by coaxial line of 6 × 6 elements on a high dielectric constant substrate was designed and simulated. The simulation results show that high- impedance surface structure proposed in this paper can effectively improve the performance of the microstrip antenna phased array.