Radio frequency IDentification miniature interrogator antenna sprayed over an in-vehicle chassis

摘要

Among the different assets tracking solutions radiofrequency IDentification (RFID) is a promising technology for incar communications because of its relatively low-cost deployment and real-time monitoring and processes. In this study, a hidden, miniature, narrow-band antenna of dimensions 0.18;B; ?? 0.20;B; ?? 0.005;B; is presented, which is easy to manufacture using conductive paint sprayed over a car body. The design relies on a resonator, a negative image of the radiator for improved efficiency when in close proximity to ground planes and is suited for use in RFID networks using the unlicensed RFID band (865.6??867.6 MHz) described. The term miniature comes from the fact that the antenna is physically small given low proximity and insensitivity to the ground plane, which facilitates a possible coating layer over the antenna for hidden applications.