A HIGH-ISOLATION DUAL-POLARIZATION DIELECTRIC RESONATOR ANTENNA WITH BOWTIE-SHAPED SLOT COUPLING

作者：Guo, Min^*; Xuan, Xiao-Bo; Wang, Min; Cui, Jun Wen; Zhong, Shun-Shi

来源：Microwave and Optical Technology Letters, 2015, 57(10): 2426-2429.

DOI：10.1002/mop.29333

• dielectric resonator antenna
• dual polarization
• high isolation
• slot coupling
• feed network

A new design of dual-polarized dielectric resonator antenna with high isolation over a wide bandwidth is introduced, which is fed using the bowtie-shaped slot coupling. Four identical bowtie slots are arranged symmetrically in an unconnected cross configuration in the center. The isolation between two orthogonal polarizations of the proposed antenna is greatly improved over the conventional cross slot. The proposed antenna prototype has been fabricated and measured. Both simulated and measured results show that the proposed antenna has a port isolation of about 40 dB over the impendence bandwidth (S vertical bar(11)vertical bar <= 10 db) of 28-30%. Moreover, stable radiation patterns and a peak gain of 5.0-6.4 dBi are achieved within the operating band. Its good polarization purity and broadside radiation patterns are confirmed also.

• 出版日期2015-10
• 单位上海大学