Unknown

Dataset Information

0

Multiport Circular Polarized RFID-Tag Antenna for UHF Sensor Applications.


ABSTRACT: A circular polarized patch antenna for UHF RFID tag-based sensor applications is presented, with the circular polarization (CP) generated by a new antenna shape, an asymmetric stars shaped slotted microstrip patch antenna (CP-ASSSMP). Four stars etched on the patch allow the antenna's size to be reduced by close to 20%. The proposed antenna is matched with two RFID chips via inductive-loop matching. The first chip is connected to a resistive sensor and acts as a sensor node, and the second is used as a reference node. The proposed antenna is used for two targets, serving as both reference and sensor simultaneously, thereby eliminating the need for a second antenna. Its reader can read the RFID chips at any orientation of the tag due to the CP. The measured reading range is about 25 m with mismatch polarization. The operating frequency band is 902-929 MHz for the two ports, which is covered by the US RFID band, and the axial-ratio bandwidth is about 7 MHz. In addition, the reader can also detect temperature, based on the minimum difference in the power required by the reference and sensor.

SUBMITTER: Zaid J 

PROVIDER: S-EPMC5539847 | biostudies-other | 2017 Jul

REPOSITORIES: biostudies-other

Similar Datasets

| S-EPMC7926944 | biostudies-literature
| S-EPMC5539613 | biostudies-other
| S-EPMC5712905 | biostudies-literature
| S-EPMC6281215 | biostudies-literature
| S-EPMC6367791 | biostudies-literature
| S-EPMC6611607 | biostudies-literature
| S-EPMC6111728 | biostudies-literature
| S-EPMC2904704 | biostudies-literature
| S-EPMC7538943 | biostudies-literature
| S-EPMC4603319 | biostudies-other