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[IEEE 2018 IEEE International Conference on RFID Technology & Application (RFID-TA) - Macau, Macao (2018.9.26-2018.9.28)] 2018 IEEE International Conference on RFID Technology & Application (RFID-TA) - Glove-Integrated Slotted Patch Antenna for Wearable UHF RFID Reader
摘要： We present a glove-integrated slotted patch antenna for a wearable Ultra High Frequency Radio Identification Technology (UHF RFID) reader operating at 866 MHz. We tested the prototype antenna made of copper foil adhered on low-permittivity Ethylene Propylene Diene Monomer (EPDM) foam material having the thickness of 4 mm. To characterize the antenna, we tested it wirelessly in communication with a common dipole type RFID tag to estimate its realized gain, radiation pattern and maximum tag read range it provides. We also analyzed the effects of variable separation between the antenna and the body to confirm stable operation required by the application. The results showed that the antenna feasible for the work glove applications providing the read range up to 360 cm with the reader’s output power of 28.4 dBm.
关键词： work glove application,UHF,RFID reader antenna,wearable antenna,slotted patch antenna
更新于2025-09-23 15:22:29
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An Optimization Method for the Synthesis of Flat-Top Radiation Patterns in the Near-and Far-Field Regions
摘要： The paper presents an optimization method for the design of array antennas with flat-top radiation patterns in the far-field and near-field regions, in which the synthesis of flat-top radiation patterns is formulated as a quadratically constrained quadratic programing (QCQP) problem with equality constraints. It is shown that the notoriously difficult QCQP problem can be linearized and simplified for the synthesis of flat-top radiation patterns in the far-field region, and can be extended to near-field region by introducing a weighted diagonal matrix. To validate the optimization theory, a flat-top sector beam antenna for base station applications and an RFID bookshelf reader antenna are designed and fabricated. Simulation and measurement results show that the base station antenna operating at 5.4 GHz provides a flat-top radiation pattern with less than 1 dB fluctuation in the desired covering range of the main beam. The five-element RFID reader antenna working in the UHF band for library applications is demonstrated to generate uniform electric field intensity with less than 3 dB fluctuation across the whole bookshelf.
关键词： Beam shaping,RFID reader antenna,quadratically constrained quadratic programming,flat-top sector beam antenna
更新于2025-09-10 09:29:36
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[IEEE 2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP) - Auckland, New Zealand (2018.8.5-2018.8.8)] 2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP) - Display Frame UHF RFID Antenna for Museums
摘要： A display frame ultra-high frequency (UHF) radio frequency identification (RFID) reader antenna design is proposed for museums in this paper. Given its conformal design, the antenna can seamlessly hide and blend with the museum environment. RFID asset tracking, personnel tracking and anti-theft surveillance, can be accomplished without altering the display artifacts or disturbing the aesthetics of the museum. The series fed patch antenna array, arranged in a circular fashion makes the RFID tag detection viable in any orientation at the near zone. At far-field distances, the antenna can detect tags up to 6 meters. The antenna has a bandwidth of 28 MHz and is designed for Region-2 RFID frequencies. It uses an unconventional substrate that is lightweight, non-toxic, chemically resistant and self-extinguishing if exposed to fire. More than one frame antennas can be operated using multi-port RFID readers to realize a distributed antenna system within the museum.
关键词： distributed antenna system,conformal,UHF RFID reader antenna,display frame antenna,museum
更新于2025-09-04 15:30:14