A TE<inline-formula> <tex-math notation="LaTeX">$_{01\delta}$ </tex-math> </inline-formula> Mode Omnidirectional Dielectric Resonator Antenna Excited by a Special Configuration

作者：Taolin Liu, Hu Yang, Yan He, Junqi Lu · 发表于：IEEE Transactions on Antennas and Propagation · 年份：2018 · DOI：10.1109/tap.2018.2867047 · 被引用次数：25 · 研究领域：Antenna Design and Analysis、Microwave Engineering and Waveguides、Advanced Antenna and Metasurface Technologies

The TE01δmode of a dielectric resonator antenna (DRA) is excited by a special configuration which is composed of four printed arc-shaped dipoles. Based on this, an omnidirectional cylindrical ring DRA with horizontal polarization is designed, fabricated, and measured. The measured results match well with the simulated ones. The 10 dB return loss bandwidth is 4.5% (2.39-2.50 GHz). Within this operating frequency band, the measured gain is in the range of 2.12-2.54 dBi, and the simulated radiation efficiency is over 87%. Besides, the maximal radiation direction of the antenna is in the horizontal plane and the gain variation in all direction of the azimuthal plane is less than 0.5 dB. Moreover, the designed antenna has a compact size of 0.33λ0× 0.33λ0× 0.10λ0, where λ0is the wavelength of the center frequency.