与弹头共型的超宽带微带引信天线
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摘要
针对常规微带天线带宽较窄,难以应用到宽频带系统上的问题,提出了超宽带与弹头共型微带天线。该天线以微带贴片天线为设计基础,在对辐射面宽度渐变处理,开窗以及接地面悬空等特殊结构设计,改善阻抗匹配特性。采用基于有限元方法的电磁仿真软件HFSS对所设计的天线进行仿真与测试结果表明,该天线极大的增加了带宽,在3.6～8.5 GHz的频率范围驻波比小于2.0,其相对带宽达到了68%,且天线在整个工作频段内具有良好的辐射特性。
For the general microstrip antennas often hold a narrow bandwidth. they are difficult to apply on broadband system, an UWB(ultra wideband) specific microstrip antenna with the warhead tpye is designed base on the microstrip antenna, On the radiating surface width gradient processing, open a slot window on the radiating surface and the ground hang in air, to improve the impedance matching. It is simulated by Ansoft HFSS, which is a simulation software based on Finite Element Method(FEM). Numerical results have demonstrated that the bandwidth of this antenna is increased swingeing, The VSWR is less than 2.0 at the frequency from 3.6 GHz to 8.5 GHz, the relative bandwidth attained to 68%, and this antenna holds good radiation performances in its operation frequency.
For the general microstrip antennas often hold a narrow bandwidth. they are difficult to apply on broadband system, an UWB(ultra wideband) specific microstrip antenna with the warhead tpye is designed base on the microstrip antenna, On the radiating surface width gradient processing, open a slot window on the radiating surface and the ground hang in air, to improve the impedance matching. It is simulated by Ansoft HFSS, which is a simulation software based on Finite Element Method(FEM). Numerical results have demonstrated that the bandwidth of this antenna is increased swingeing, The VSWR is less than 2.0 at the frequency from 3.6 GHz to 8.5 GHz, the relative bandwidth attained to 68%, and this antenna holds good radiation performances in its operation frequency.
引文
[1]Yang F.Wide-band E-shaped patch antennas for wireless communications[J].IEEE Transactions on Antennas and Propagation.2002,49(7):1094-1100.
[2]钟顺时.微带天线理论与应用[M].西安:西安电子科技大学出版社,1991:152-159.
[3]张钧,刘克诚,张贤铎,等.微带天线理论与工程[M].北京:国防工业出版社,1988:112-118.
[4]徐海洋,张厚,王剑.一种平面开槽超宽带天线的设计与研究[J].探测与控制学报,2008,30(4):40-43.
[5]刘汉,高卫东,孙荣辉.基于U形槽和寄生条带的双陷波超宽带天线[J].探测与控制学报,2012,34(3):61-67.
[6]Lee K F,Ho K Y and Dahele J S.Circular-disk microstrip antenna with an air gap[J].IEEE Transactions on Antennas and Propagation.1984,32(8):880-884.
[7]任王,史治国,陈抗生.小型超宽带天线设计[C]//2007年全国微波毫米波会议论文集.北京:中国电子学会微波分会,2007.
[8]韩东波.与底板间夹有空气层的矩形贴片超宽带小天线[C]//中国兵工学会第18届引信学术年会论文集.西安:中国兵工学会引信专业委员会,2012:94-97.
[2]钟顺时.微带天线理论与应用[M].西安:西安电子科技大学出版社,1991:152-159.
[3]张钧,刘克诚,张贤铎,等.微带天线理论与工程[M].北京:国防工业出版社,1988:112-118.
[4]徐海洋,张厚,王剑.一种平面开槽超宽带天线的设计与研究[J].探测与控制学报,2008,30(4):40-43.
[5]刘汉,高卫东,孙荣辉.基于U形槽和寄生条带的双陷波超宽带天线[J].探测与控制学报,2012,34(3):61-67.
[6]Lee K F,Ho K Y and Dahele J S.Circular-disk microstrip antenna with an air gap[J].IEEE Transactions on Antennas and Propagation.1984,32(8):880-884.
[7]任王,史治国,陈抗生.小型超宽带天线设计[C]//2007年全国微波毫米波会议论文集.北京:中国电子学会微波分会,2007.
[8]韩东波.与底板间夹有空气层的矩形贴片超宽带小天线[C]//中国兵工学会第18届引信学术年会论文集.西安:中国兵工学会引信专业委员会,2012:94-97.