Circularly Polarized Broadband RFID Microstrip Tag Antenna
Journal: International Journal of Engineering Research (IJER) (Vol.3, No. 4)Publication Date: 2014-04-01
Authors : B. Rajini G. V. Subrahmanyam;
Page : 209-212
Keywords : Circularly polarization; microstrip antenna; Radio Frequency Identification (RFID); tag antenna.;
Abstract
Abstract- In recent years, the application of radio frequency identification (RFID) operating in the ultra-high frequency (UHF) band (860-960MHz) are expanding exponentially, due to the advantages such as long reading distance, high data transfer rate, and small tag size. So the design of a CP tag antenna with broadband characteristic is presently one of the most challenging topics. This project presents a square patch passive RFID tag antenna designed for UHF band. To achieve compact size broadband and circular polarization (CP) radiation, the square patch is embedded with a cross slot, while an L-shaped open-end microstrip line coupled to the patch. By selecting an appropriate length for the microstrip line and its coupling distance with the radiating element, easy control on the input impedance of the designed tag antenna which leads to excellent impedance matching is achieved. The measured 10-dB return-loss bandwidth of the tag antenna is 27MHz (from 901?928 MHz).
Other Latest Articles
- A Novel Single-Phase Multistring Multilevel Inverter Topology for Distributed Energy Resources
- Implementation of Slip-Controller for Induction Motor Drive Employing Indirect Matrix Converter
- Concept of Hydrodynamic Load Analysis of Fixed Jacket Structure - An Overview of Horizontal Cylinder
- Analysis on the Work-Related Musculoskeletal Disorders (WMSD’s) Based on Ergonomic Study in Case of Industry Study
- Analysis on the Work-Related Musculoskeletal Disorders (WMSD’s) Based on Ergonomic Study in Case of Industry Study
Last modified: 2014-04-04 00:03:52