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Abstract
A novel triple band rectangular dielectric resonator antenna is presented for satisfying wireless local area network (WLAN) and worldwide interoperability for microwave access (WiMAX) applications simultaneously. The proposed triple-band antenna operates at 2.4 GHz/3.5 GHz/5.8 GHz. By using three plexiglass dielectrics on FR4 board, a very low cost antenna is designed. In addition, a modified version of the rectangular dielectric resonator antenna, which has three-segment thin dielectrics with different sizes, provides omnidirectional radiation over the frequency bands. The antenna is fabricated, and a good agreement is achieved between the simulated and measured results. The designed triple-band antenna with extremely low cost and low profile is very suitable for multiband mobile communication systems. To the authors' knowledge, this is the first triple band dielectric resonator antennas (DRAs) presented with stable radiation patterns (nearly omnidirectional pattern) for each operating band.
