用于RFID阅读器的紧凑型圆极化2.45/5.8 ghz天线

2021 IEEE International Conference on RFID Technology and Applications (RFID-TA) Pub Date : 2021-10-06 DOI:10.1109/RFID-TA53372.2021.9617345

Chandni Bajaj, D. Upadhyay, Sachin Kumar, B. Kanaujia

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引用次数: 0

摘要

本文设计了一种适用于2.45/5.8 GHz RFID读写器的圆极化天线。天线包括交叉偶极子结构，偶极子对设计在天线基板的上下两侧。偶极子元件通过两条延迟线连接，在电流矢量之间引入90度相位差。天线在2.45 GHz频段阻抗带宽为220mhz (2300 ~ 2520mhz)，在5.8 GHz频段阻抗带宽为200mhz (5700 ~ 5900 MHz)。2.45 GHz频段的轴向比带宽为170mhz (2410 ~ 2580mhz)， 5.8 GHz频段的轴向比带宽为80mhz (5790 ~ 5870mhz)。

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Compact Circularly Polarized 2.45/5.8-GHz Antenna for RFID Readers

A circularly polarized antenna is presented for 2.45/5.8 GHz RFID readers in this paper. The antenna comprises of a cross-dipole structure with dipole pairs designed on lower and upper sides of the antenna substrate. The dipole elements are connected through two delay lines to introduce a 90-degree phase difference between the current vectors. The antenna exhibits an impedance bandwidth of 220 MHz (2300 2520 MHz) in the 2.45 GHz band and 200 MHz (5700 5900 MHz) in the 5.8 GHz bands. The axial ratio bandwidths are 170 MHz (2410 2580 MHz) in the 2.45 GHz band and 80 MHz (5790 5870 MHz) in the 5.8 GHz band.

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2021 IEEE International Conference on RFID Technology and Applications (RFID-TA)

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