首页|Wideband Cup Dielectric Resonator Antenna With Stable Omnidirectional Patterns
Wideband Cup Dielectric Resonator Antenna With Stable Omnidirectional Patterns
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NETL
NSTL
Applied Computational Electromagnetics Soc
A wideband omnidirectional cup dielectricresonator antenna (CDRA) is designed by utilizing threemodes (DR TM_(01δ) , coil, and monopole modes) for thefirst time. It deploys the modified coil feeding structurecomprising four coil segments and two close-byprobes. The four coil segments provide an equivalentmagnetic-current loop and the two probes act as an electricmonopole. Thus, the modified feeding structure canexcite the DR TM_(01δ) mode and two neighbor resonancesextending the operating bandwidth. All of thesemodes have omnidirectional characteristics. To verify theidea, a CDRA is designed, fabricated, and measured.The CDRA is 0.61λ_0 ×0.32λ_0 (where λ_0 is the freespacewavelength at the center frequency) with a bandwidthof 67.7% (3.28-6.64 GHz). The antenna has stableomnidirectional radiation patterns, high radiation efficiencies,and a low cross-polarized level within the operatingbandwidth.
Shuxin Zheng、Nan Yang、Xiaoming Chen、Zhen-Yuan Zhang、Bingyi Qian、Ahmed A. Kishk
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School of Information and Communications EngineeringXi’an Jiaotong University, Xi’an 710049, China
School of Electronics and Information Technology (School of Microelectronics) and Guangdong Provincial KeyLaboratory of Optoelectronic Information Processing Chips and SystemsSun Yat-sen University, Guangzhou 510006, China
Department of Electrical and Electronic EngineeringSouth University of Science and Technology of China, Shenzhen 518055, China
Department of Electrical and Computer EngineeringConcordia University, Montreal, QC H3G 1M8, Canada
NETL
NSTL
Applied Computational Electromagnetics Soc
