Wideband rectangular dielectric resonator antenna for low-profile applications

• Main Authors: Mohammad Abedian, Mohammad Abedian, Oraizi, Homayoon, Abdul Rahim, Sharul Kamal, Shadi Danesh, Shadi Danesh, Ramli, Muhammad Ridduan, Jamaluddin, Mohamad Haizal
• Format: Article
• Published: Institution of Engineering and Technology 2018
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utm.my/id/eprint/86511/; http://dx.doi.org/10.1049/iet-map.2017.0593
• Institution: Universiti Teknologi Malaysia

A new wideband low-profile omni-directional dielectric resonator antenna (DRA) is presented. By joining back-to-back two thin identical rectangular high-permittivity dielectric resonators (DRs) and feeding the arrangement with a microstrip feed line inserted in-between the DRs, an impedance bandwidth covering the frequency range from 4.78 to 12.32 GHz, or ~88.2%, is achieved. Importantly, the measured results show that the proposed low-profile DRA also provides a stable omni-directional radiation pattern with low cross-polarisation. The proposed antenna size is 12 × 24 × 2 mm3 or ~0.191λ0 × 0.384λ0 × 0.032λ0 at 4.8 GHz.