Prof Leboli Zachia Thamae
The ever-decreasing size of electronic circuits leads to the challenge of an antenna becoming one of the biggest components in most portable wireless electronic devices. lIenee recent miniaturization techniques such as dielectric resonator antenna (DRA) technology employing compact non-conducting dielectric materials as radiating elements continue to be explored. We seek the application of DRAs in radio frequency identification (RFID) tags to tackle the problem of frequency detuning and loss of matching faced by most tag antennas when mounted on metallic backgrounds. We then investigate antenna polarization diversity for addressing the challenge of limited space available on small mobile devices for multiple-input multiple-output (MIMO) communication systems by employing single compact narrowband dual- and tri-port regular DRAs and proposed dual-port broadband (4 – 7 GHz) bowtie DRAs and their two-element arrays on representative personal digital assistant (PDA) blocks.
