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Backfire suppressed low profile aperture coupled stacked patch antenna backed by a high impedance surface (HIS) reflector for UHF RFID reader applications
International Journal of Microwave and Wireless Technologies ( IF 1.4 ) Pub Date : 2021-01-07 , DOI: 10.1017/s1759078720001671
Sangkil Kim

In this paper, a backfire suppressed aperture coupled circularly polarized (CP) stacked patch antenna for universal ultra-high frequency (UHF) radio frequency identification applications is presented. Cross-polarized backfire radiation patterns were successfully suppressed by a planar high impedance surface (HIS) reflector. The size of the fabricated antenna is 250 × 250 × 26.9 mm3 (0.71λ0 × 0.71λ0 × 0.076λ0) and its peak gain value of 7.1 dBi is measured. The distance between the antenna and the HIS reflector is only 4.8 mm (0.014 λ0). The HIS reflector suppressed cross-pol backfire radiations by about 10 dB. Detailed antenna and HIS reflector design are discussed thoroughly in this paper. The presented backfire suppression technique using the HIS reflector is scalable to other applications and frequency bands. This paper demonstrates the feasibility of the HIS structure at UHF band.

中文翻译:

用于 UHF RFID 阅读器应用的高阻抗表面 (HIS) 反射器支持逆火抑制的薄型孔径耦合堆叠贴片天线

在本文中,介绍了一种用于通用超高频 (UHF) 射频识别应用的回火抑制孔径耦合圆极化 (CP) 堆叠贴片天线。平面高阻抗表面 (HIS) 反射器成功抑制了交叉极化逆火辐射模式。制作的天线尺寸为 250 × 250 × 26.9 mm3(0.71λ0× 0.71λ0× 0.076λ0) 并测量其 7.1 dBi 的峰值增益值。天线与 HIS 反射器之间的距离仅为 4.8 mm (0.014λ0)。HIS 反射器将交叉极化逆火辐射抑制了约 10 dB。本文详细讨论了天线和 HIS 反射器的设计。所提出的使用 HIS 反射器的逆火抑制技术可扩展到其他应用和频带。本文论证了 HIS 结构在 UHF 频段的可行性。
更新日期:2021-01-07
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