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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Zi Long Ma Li Jun Jiang Jingtian Xi Ye, T.T. |
| Copyright Year | 2002 |
| Abstract | This letter presents a novel dual-band (HF and UHF) radio frequency identification (RFID) tag antenna. Two key challenges are faced: the compact dimension and the impaired bandwidth due to the couplings between two band structures. To enable the implementation of whole design on a credit-card-size single-layer support, a spiral coil along the edges of the card is designed to handle the HF (13.56 MHz) near-field coupling, and the UHF antenna is placed inside the coil instead of outside. Meanwhile, a diagonal symmetric design consisting of two meander lines inside the spiral coil is adopted for UHF band. This structure supports multiple resonance modes around 915 MHz to broaden the working bandwidth under the large inductive circumstance from the HF coil. The proposed antenna is easy for adjustment with ways of handling both coarse tuning and fine-tuning. Its overall dimension is of a credit card size on a single-layer thin substrate. The design methodology and antenna measurement results are both presented and discussed in the letter. |
| Sponsorship | IEEE Antennas and Propagation Society |
| Starting Page | 1257 |
| Ending Page | 1260 |
| Page Count | 4 |
| File Size | 1011635 |
| File Format | |
| ISSN | 15361225 |
| Volume Number | 11 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-01-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | UHF antennas Coils Impedance Antenna measurements Resonant frequency Radiofrequency identification UHF tag antenna Compact structure dual-band radio frequency identification (RFID) tag antenna HF tag antenna single layer |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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