| FDTD Analysis and Application of Sleeve Monopole Antenna |
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| 引用本文： | ZHANG Xiaolin GAO Huotao CHEN Cong. FDTD Analysis and Application of Sleeve Monopole Antenna[J]. 武汉大学学报:自然科学英文版, 2007, 12(2): 284-288. DOI: 10.1007/s11859-006-0013-5 |
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| 作者姓名： | ZHANG Xiaolin GAO Huotao CHEN Cong |
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| 作者单位： | School of Electronic Information, Wuhan University, Wuhan 430072, Hubei, China |
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| 基金项目： | Supported by the National High Technology and Development Program of China（2001AA631050） |
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| 摘 要： | Based on the symmetry of the structure, a two-dimensional finite difference time domain （FDTD） method is used to analyze the sleeve monopole antenna on the infinite perfect conductor ground fed by a coaxial line. The fields in time domain are then turned into frequency domain through the discrete Fourier Transform to compute the surface current distribution and the input impedance of the sleeve monopole antenna. The gain or pattern of the monopole antenna is also computed, employing the combination of the image theory and the near-to-far transformation in frequency domain. All the computed results agree very well with the results of other methods and measured ones, verifying the application of the FDTD method to analyze the sleeve monopole antennas. The voltage standing wave ratio （VSWR） of the sleeve monopole antennas with different heights and radii of the sleeve are checked to study the influence of the sleeve, which indicates that the height and the radius of the sleeve are both important to the impedance bandwidth of the sleeve monopole antennas.
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| 关 键 词： | 套筒单极子天线 FDTD法 宽频带 应用 |
| 文章编号： | 1007-1202（2007）02-0284-05 |
| 收稿时间： | 2006-03-18 |
FDTD analysis and application of sleeve monopole antenna |
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| Xiaolin Zhang,Huotao Gao,Cong Chen. FDTD analysis and application of sleeve monopole antenna[J]. Wuhan University Journal of Natural Sciences, 2007, 12(2): 284-288. DOI: 10.1007/s11859-006-0013-5 |
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| Authors: | Xiaolin Zhang Huotao Gao Cong Chen |
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| Affiliation: | (1) School of Electronic Information, Wuhan University, Wuhan, 430072, Hubei, China |
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| Abstract: | Based on the symmetry of the structure, a two-dimensional finite difference time domain (FDTD) method is used to analyze the sleeve monopole antenna on the infinite perfect conductor ground fed by a coaxial line. The fields in time domain are then turned into frequency domain through the discrete Fourier Transform to compute the surface current distribution and the input impedance of the sleeve monopole antenna. The gain or pattern of the monopole antenna is also computed, employing the combination of the image theory and the near-to-far transformation in frequency domain. All the computed results agree very well with the results of other methods and measured ones, verifying the application of the FDTD method to analyze the sleeve monopole antennas. The voltage standing wave ratio (VSWR) of the sleeve monopole antennas with different heights and radii of the sleeve are checked to study the influence of the sleeve, which indicates that the height and the radius of the sleeve are both important to the impedance bandwidth of the sleeve monopole antennas. |
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| Keywords: | sleeve monopole antenna FDTD method broadband antenna PML thin-wire approximation |
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