| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6879495 | AEU - International Journal of Electronics and Communications | 2018 | 17 Pages |
Abstract
A circularly polarized, broad bandwidth, square-ring patch antenna for radio-frequency identification (RFID) is proposed. The antenna has a dimension of 100â¯Ãâ¯100 à 22.9â¯mm3. By using a Wilkinson power divider and a patch-antenna structure, a measured 3-dB axial-ratio bandwidth of approximately 140â¯MHz (16.47%), an impedance bandwidth of 136â¯MHz (15.81%), and a measured peak gain of approximately 6.8 dBic are being achieved. The operating band of the proposed antenna is suitable for China (840-846â¯MHz), Europe (865-868â¯MHz) and the United States (902-928â¯MHz) ultra-high frequency (UHF) RFID applications.
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Networks and Communications
Authors
Jwo-Shiun Sun, Chia-Hao Wu,