A method to design dual-band, high-directivity ebg resonator antennas using single-resonant, single-layer partially reflective surfaces

被引:31
作者
Ge Y. [1 ]
Esselle K.P. [1 ]
Bird T.S. [2 ]
机构
[1] Centre for Microwave and Wireless Applications, Electronic Engineering, Macquarie University, Sydney
[2] CSIRO ICT Centre, Epping, NSW 1710
关键词
D O I
10.2528/PIERC10020901
中图分类号
学科分类号
摘要
A new method is presented to design dual-band, high- directivity, EBG-resonator antennas using simple, single-resonant, single-layer partially reflective surfaces (PRS). The large, positive gradient of the reflection phase versus frequency curve of partially reflecting surfaces, observed only close to the resonance frequency of the PRS, is exploited for this purpose. An example single-resonant PRS, based on a frequency-selective surface (FSS) composed of a printed slot array, was designed. Then it is used to design an EBG- resonator antenna to demonstrate the feasibility of achieving dual-band performance. Cavity models are employed, together with the reflection characteristics of the PRS, to understand the operation of the device at critical frequencies such as cavity resonance frequencies and the PRS resonance frequency. Antenna simulations and computed results confirm the dual-band operation of this very simple, single-layer, low- profile EBG-resonator antenna. It resonates in two bands centered at 10.5 GHz and 12.3 GHz. The peak directivity in each band is 18.2 dBi and 20.5 dBi, and the 3 dB directivity bandwidth of each band is 7.5% and 8.7%, respectively.
引用
收藏
页码:245 / 257
页数:12
相关论文
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