A Wideband Circularly Polarized Stacked Patch Antenna With Truncated Corners Ground Plane for Universal UHF RFID Reader

2020 17th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON) Pub Date : 2020-06-01 DOI:10.1109/ECTI-CON49241.2020.9157906

Sathaporn Konjunthes, W. Thaiwirot, P. Akkaraekthalin

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Abstract

This paper presents a wideband circularly polarized stacked patch antenna with truncated corners ground plane for universal UHF RFID reader. The configuration of the antenna composes of a slanted elliptical patch, corner truncated patch, a horizontally meandered strip (HMS), and corner truncated ground plane. One end of the HMS is connected to an SMA connector, while the other end is connected to the radiating patch via probe. In order to improve the bandwidth, the parasitic patch is used by placing above the radiating patch. From the simulated results, the proposed antenna has an impedance bandwidth of about 18.6% (800 – 965 MHz), a 3-dB axial ratio (AR) bandwidth of around 18.3% (816 – 981 MHz), and maximum gain of 8.4 dBi. The proposed antenna can operate in the frequency range of 840 – 960 MHz. Therefore, it is suitable for applying in universal UHF RFID reader.

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一种用于UHF RFID读写器的宽带圆极化截角叠加贴片天线

提出了一种适用于UHF RFID读写器的宽带圆极化截角接平面叠置贴片天线。天线的结构由倾斜椭圆贴片、角截断贴片、水平弯曲条(HMS)和角截断接平面组成。HMS的一端连接到SMA连接器，另一端通过探头连接到辐射贴片。为了提高带宽，将寄生贴片置于辐射贴片之上。仿真结果表明，该天线阻抗带宽约为18.6% (800 ~ 965 MHz)， 3db轴比(AR)带宽约为18.3% (816 ~ 981 MHz)，最大增益为8.4 dBi。该天线可在840 - 960mhz的频率范围内工作。因此，它适合应用于通用的超高频RFID读写器。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2020 17th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)

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