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用PTD分析雙彎曲反射面天線形變和穿孔的輻射特性

董濤,  徐曉文,  肖疆

董濤, 徐曉文, 肖疆. 用PTD分析雙彎曲反射面天線形變和穿孔的輻射特性[J]. 電子與信息學(xué)報(bào), 2004, 26(12): 2002-2005.
引用本文: 董濤, 徐曉文, 肖疆. 用PTD分析雙彎曲反射面天線形變和穿孔的輻射特性[J]. 電子與信息學(xué)報(bào), 2004, 26(12): 2002-2005.
Dong Tao, Xu Xiao-wen, Xiao Jiang . Analysis of the Radiation Characteristics of the Doubly Curved Reflector Antenna with Surface Distortion and Holes Using PTD[J]. Journal of Electronics & Information Technology, 2004, 26(12): 2002-2005.
Citation: Dong Tao, Xu Xiao-wen, Xiao Jiang . Analysis of the Radiation Characteristics of the Doubly Curved Reflector Antenna with Surface Distortion and Holes Using PTD[J]. Journal of Electronics & Information Technology, 2004, 26(12): 2002-2005.

用PTD分析雙彎曲反射面天線形變和穿孔的輻射特性

Analysis of the Radiation Characteristics of the Doubly Curved Reflector Antenna with Surface Distortion and Holes Using PTD

  • 摘要: 該文根據(jù)模型反射面天線的爆炸實(shí)驗(yàn)測試結(jié)果建立了反射面天線形變的數(shù)學(xué)模型，應(yīng)用物理光學(xué)(P0)法和物理繞射(PTD)理論計(jì)鐘：了一種賦形反射面天線形變后的輻射特性，同時(shí)還計(jì)算了反射面天線表面被爆炸破片穿孔后的輻射特性，結(jié)果表明，由于反射面的局部形變，直接導(dǎo)致輻射方向圖的惡化，并且隨著形變部分面積的增大，水平面的副瓣抬高很大，穿孔也會使水平面的副瓣抬高。
    Abstract: The reflector antenna distortion model is built by exploding test results. The radiation characteristics of a kind of distorted shaped reflector antenna are computed by using PO and PTD method, and the radiation characteristics of the reflector antenna with holes on the surface are also computed. The simulation results show that because of the local distortion of the reflector the radiation patterns become degraded. The sidelobe level in the azimuth plane becomes higher as the distortion area becomes bigger. It can be seen that the sidelobe level in the azimuth plane also increases because of the reflector perforated with holes on the surface.
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  • Samii Y R. An efficient computational method for characterizing the effects of random surface error on the average power pattern of reflectors[J]. IEEE Trans. on AP, 1983, AP-31(1): 92-98.[2]Rusch W V T, Wohlleben R. Surface tolerance loss for dual-reflector antennas[J]. IEEE Trans.on AP, 1982, AP-30(4): 784-785.[3]Duan Dah-Weih, Samii Y R. A generalized diffraction synthesis technique for high performance reflector antennas[J]. IEEE Trans. on AP, 1995, AP-43(1): 27-40.[4]陳少平.饋源偏離焦點(diǎn)及反射面變形情況下拋物面天線輻射場的計(jì)算[J].中南民族學(xué)院學(xué)報(bào),1995,14(1):24-26.[5]王五兔,徐國華.反射面變形對天線輻射方向圖的影響.電子學(xué)報(bào),1994,22(12):46-49.[6]胡明春,李建新.賦形波束雙彎曲反射面探討.現(xiàn)代雷達(dá),1996,18(5):64-68.[7]林世明.賦形波束雙彎曲反射器天線理論研究[J].電子學(xué)報(bào),1981,9(4):56-66.[8]尹家賢,等.用FDTD和物理光學(xué)混合法分析毫米波拋物面天線[J].電子學(xué)報(bào),2002,30(6):791-793.[9]阮穎錚.雷達(dá)散射截面與隱身技術(shù)[M].北京:國防工業(yè)出版社,1998:118-125.[10]崔索民,吳振森.PTD和PTDEEC算式的奇異點(diǎn)處理[J].電波科學(xué)學(xué)報(bào),1997,12(4):369-374.[11]Arie Michaeli. Equivalent edge currents for arbitrary aspects of observation[J]. IEEE Trans. on AP, 1984, AP-32(3): 252-258.
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  • 收稿日期:  2003-07-26
  • 修回日期:  2004-01-05
  • 刊出日期:  2004-12-19

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