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首页> 外文会议>IEEE International Symposium on Antennas and Propagation >Log-Periodic Dipole Array with Improved Front-to-Back Ratio for Universal UHF RFID Handheld Reader Applications
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Log-Periodic Dipole Array with Improved Front-to-Back Ratio for Universal UHF RFID Handheld Reader Applications

机译：记录周期性偶极阵列，具有通用UHF RFID手持读卡器应用的改进的前后比率

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摘要

This paper presents an antenna design for universal UHF RFID handheld readers. Four-element log-periodic dipole array was adopted as the basic antenna structure. The arms of the radiators were folded to make the antenna compact in size. Parasitic elements were also included to improve the front-to-back ratio. The fabricated prototype exhibited good impedance bandwidth covering the universal UHF RFID band from 840MHz to 960MHz. Besides, the overall radiation efficiency was above 80% across the entire band. A maximum of 10dB improvement in front-to-back ratio was achieved at 920MHz.
机译：本文介绍了通用UHF RFID手持读卡器的天线设计。采用四元素日志定期偶极子阵列作为基本天线结构。折叠散热器的臂以使天线大小紧凑。还包括寄生元素以提高前后比。制造的原型呈现出良好的阻抗带宽，覆盖840MHz至960MHz的通用UHF RFID带。此外，整个辐射效率超过整个频段的80％以上。在920MHz上实现了前后比的最大10dB的提高。

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