摘要
In this communication, we propose a printed log-periodic dipole array (LPDA) antenna covering the universal ultra-high-frequency (UHF) radio frequency identification (RFID) band of operation. Koch-shaped dipoles together with closely-coupled parasitic elements as directors were utilized for compactness in size and improvement in front-to-back ratio (F/B ratio). The experimental results demonstrate that the proposed antenna features good impedance match, moderate gain, better than 80% total radiation efficiency and excellent front-to-back ratio over the universal UHF RFID band from 840 MHz to 960 MHz. The antenna is well suitable for applications in RFID handheld readers.
| 原文 | English |
|---|---|
| 文章編號 | 6517871 |
| 頁（從 - 到） | 4852-4856 |
| 頁數 | 5 |
| 期刊 | IEEE Transactions on Antennas and Propagation |
| 卷 | 61 |
| 發行號 | 9 |
| DOIs | |
| 出版狀態 | Published - 1 1月 2013 |