题名: Suppression of grating lobes from a corrugated 22 slot antenna array with element spacing beyond a wavelength
作者: Huang C. ; Zhao Z. ; Feng Q. ; Luo X.
刊名: IET Microwaves, Antennas and Propagation
出版日期: 2011
卷号: 5, 期号: 13, 页码: 1607-1612 通讯作者: Huang C.
文章类型: 期刊论文
中文摘要: A method of loading surface corrugation in a 2×2 slot planar array with element spacing in the E plane beyond a wavelength is proposed for suppressing high grating lobes. This antenna array adopts a corrugated structure as a secondary radiation source to make effective spacing of elements within a wavelength. The authors investigate numerically and experimentally the performance of the antenna, and find good agreement between the measured and simulated results. Compared with conventional flat 2×2 slot arrays, the results show that the gain of the corrugated slot antenna array is significantly improved by about 6 dB, the half-power beamwidth is narrowed by 12° in the E plane and 10° in the H plane and the high grating lobe level occurring in the E plane of the flat slot array is sharply suppressed as well. Moreover, it is found that the introduction of a secondary source in this slot array can also make the element spacing in the H plane larger than a wavelength without an obvious grating lobe. The radiation mechanism of this antenna is well described and the role of surface corrugation in this antenna is demonstrated as the secondary radiation source which is responsible for the improved antenna gain and suppressed grating lobe. © 2011 The Institution of Engineering and Technology. 英文摘要: A method of loading surface corrugation in a 2×2 slot planar array with element spacing in the E plane beyond a wavelength is proposed for suppressing high grating lobes. This antenna array adopts a corrugated structure as a secondary radiation source to make effective spacing of elements within a wavelength. The authors investigate numerically and experimentally the performance of the antenna, and find good agreement between the measured and simulated results. Compared with conventional flat 2×2 slot arrays, the results show that the gain of the corrugated slot antenna array is significantly improved by about 6 dB, the half-power beamwidth is narrowed by 12° in the E plane and 10° in the H plane and the high grating lobe level occurring in the E plane of the flat slot array is sharply suppressed as well. Moreover, it is found that the introduction of a secondary source in this slot array can also make the element spacing in the H plane larger than a wavelength without an obvious grating lobe. The radiation mechanism of this antenna is well described and the role of surface corrugation in this antenna is demonstrated as the secondary radiation source which is responsible for the improved antenna gain and suppressed grating lobe. © 2011 The Institution of Engineering and Technology. 语种: 英语
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/6765
Appears in Collections: 微细加工光学技术国家重点实验室（开放室）_期刊论文
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Recommended Citation:
Huang C.,Zhao Z.,Feng Q.,et al. Suppression of grating lobes from a corrugated 22 slot antenna array with element spacing beyond a wavelength[J]. IET Microwaves, Antennas and Propagation,2011,5(13):1607-1612.
