本发明具有较宽工作带宽和高增益的特性，适合三频段RFID读写器天线应用。
The invention has the characteristics of wider working bandwidth and the high gain, which is suitable for the antenna application of the three frequency band RFID reader-writer.
本发明具有较宽工作带宽和高增益的特性，适合三频段RFID读写器天线应用。
The invention has the characteristics of wider working bandwidth and the high gain, which is suitable for the antenna application of the three frequency band RFID reader-writer.
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