In this paper, an eight-shaped polarization-dependent electromagnetic bandgap (ES-PDEBG) structure is proposed. The unit cell of ES-PDEBG structure consists of an outer eight-shaped EBG patch with two inner square patches and three vias. Surface wave bandgap and reflection phase characteristics have been studied for the proposed structure. From the measurement results, two surface wave bandgaps with center frequencies 3.42 and 5.88 GHz are observed along the X-direction, and one surface wave bandgap with center frequency 3.69 GHz is observed along the Y-direction. The refection phase bandgap of the proposed structure is centered at 5.61 and 3.31 GHz for x- and y-polarized incident plane waves, respectively. Furthermore, the application of the proposed structure as polarization reflector is presented. The study demonstrates that the structure can act as dual-band in-polarization reflector for circularly polarized waves. In addition, incident linearly polarized waves are reflected as circularly polarized waves in four operating bands.

中文翻译：

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八字形偏振相关电磁带隙结构及其作为偏振反射器的应用

在本文中，提出了一种八形偏振相关电磁带隙（ES-PDEBG）结构。ES-PDEBG 结构的晶胞由一个外部八字形 EBG 贴片和两个内部方形贴片和三个通孔组成。已针对所提出的结构研究了表面波带隙和反射相位特性。从测量结果可以看出，沿线观察到两个中心频率分别为 3.42 和 5.88 GHz 的表面波带隙。X- 方向，沿方向观察到一个中心频率为 3.69 GHz 的表面波带隙是-方向。所提出结构的反射相位带隙以 5.61 和 3.31 GHz 为中心X- 和是的-偏振入射平面波，分别。此外，还介绍了所提出的结构作为偏振反射器的应用。研究表明，该结构可以作为圆偏振波的双波段内偏振反射器。此外，入射的线偏振波在四个工作频带中被反射为圆偏振波。