Sectorised WiMAX antenna for future vehicular communications systems
ABSTRACT A narrow band antenna of dimensions 0.54Â¿Ã0.28Â¿Ã0.09Â¿ is presented. The design is suited for use in cellular radio-over-fibre networks. Associated mobile equipment using the international unlicensed WiMAX band (5.470-5.725 GHz) is also described. The antenna is well matched across the band and is suitable for a full-duplex bi-directional system with simultaneous transmission ( Tx ) and reception ( Rx ). It can be used with mobile handsets offering WiMAX connections, and in multi-sector configurations for vehicular communication systems.
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ABSTRACT: Among the different assets tracking solutions radiofrequency IDentification (RFID) is a promising technology for in-car 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 0.18λ × 0.20λ × 0.005λ 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.IET Microwaves Antennas & Propagation 12/2012; 6(15-15):1674-1680. DOI:10.1049/iet-map.2012.0307 · 0.97 Impact Factor