Abstract
A multiservice radio-frequency identification (RFID) antenna with wideband axial ratio (AR) response around 2.4 GHz is presented in this study. This antenna offers dual band operation. The prototype follows a configuration constituting a driven element (radiator) and a parasitic element. The first band offers a voltage standing wave ratio (VSWR) bandwidth (3:1) of 183 MHz (0.85-1.04 GHz). The VSWR bandwidth (3:1) for the second band is 2.77 GHz (2-4.77 GHz). It also offers a 3 dB AR bandwidth of 1.1 GHz (2.1-3.2 GHz). The 2:1 VSWR bandwidth of 0.9 GHz (2.1-3 GHz) and cross-polarisation in the second band makes this antenna suitable for 2.4 GHz RFID reader applications. The other services supported by the proposed antenna include global system for mobile communication (0.88- 0.96 GHz), long-term evolution (2.3-2.4 GHz), wireless fidelity (2.4-2.5 GHz), bluetooth low energy (2.4 GHz) and worldwide interoperability for microwave access (3.5 GHz). To extract the multiservice characteristics, it is necessary to integrate this antenna to a handheld computing platform. For assessing the performance in such a platform, the prototype is optimised and merged with a larger ground plane of size 170 mm× 130 mm and studied in the course of this study.