A Novel Single-Fed Wide Dual-Band Circularly Polarized Dielectric Resonator Antenna

作者：Zhou, Yao-Dong^*; Jiao, Yong-Chang^*; Weng, Zi-Bin^*; Ni, Tao^*

来源：IEEE Antennas and Wireless Propagation Letters, 2016, 15: 930-933.

DOI：10.1109/LAWP.2015.2481462

• Circular polarization
• dielectric resonator antenna (DRA)
• dual-band
• wide band

A new single-fed wide dual-band circularly polarized (CP) dielectric resonator antenna (DRA) is presented in this letter. The DRA is excited by a microstrip line through the narrow underneath rectangular aperture, and its and HE11 delta (2 < delta < 3) modes are utilized for the dual-band design. To achieve CP fields, two notches are truncated from the cylindrical DRA at phi = 45 degrees and 225 degrees. A pair of equal arc-shaped slots are used to improve the axial-ratio (AR) and impedance bandwidths. The antenna features impedance bandwidths (vertical bar S-11 vertical bar < -10 dB) of 26.25% and 11.17%, and 3-dB AR bandwidths of 15.8% and 5.02% in the lower and upper bands, respectively. To verify the simulation, the antenna is designed and measured. Reasonable agreement between measured and simulated results is obtained.

• 出版日期2016
• 单位西安电子科技大学