| A new photonic bandgap cover for a patch antenna with a photonic bandgap substrate |
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| 作者姓名： | 林青春 朱方明 何赛灵 |
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| 作者单位： | State Key Laboratory of Modern Optical Instrumentation，Center of Optical and Electromagnetic Research，Zhejiang University，State Key Laboratory of Modern Optical Instrumentation，Center of Optical and Electromagnetic Research，Zhejiang University，State Key Laboratory of Modern Optical Instrumentation，Center of Optical and Electromagnetic Research，Zhejiang University Hangzhou 310027，China，Hangzhou 310027，China，Hangzhou 310027，China |
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| 基金项目： | theNationalNaturalScienceFoundationofChina(No.90101024)andtheScienceandTechnologiesofZhe-jiangProvinc(No.ZD0002) |
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| 摘 要： | INTRODUCTIONInvestigationofphotonicbandgap(PBG)materialsiscurrentlyoneofthemostactivefron-tiersinengineeringandphysics.PBGmaterialshaverecentlyemergedasanewmultidisciplinaryfieldofstudy(Kesleretal.,1996;Yablonovitch,1994;SimovskiandHe,2001).APBGstructurecanhaveabandgapwithinwhichelectromagnetic(EM)wavepropagationispreventedinalldirec-tions(Joannopoulosetal.,1997;Ozbayetal.,1994).Foratwo-dimensionalPBGmaterial,thepropagationofanEMwavewithinitsbandgapispreventedinalldirectionswithin…
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A new photonic bandgap cover for a patch antenna with a photonic bandgap substrate |
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| LIN Qing-chun,ZHU Fang-ming,HE Sai-ling.A new photonic bandgap cover for a patch antenna with a photonic bandgap substrate[J].Journal of Zhejiang University Science,2004(3). |
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| Authors: | LIN Qing-chun ZHU Fang-ming HE Sai-ling |
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| Abstract: | A new photonic bandgap (PBG) cover for a patch antenna with a photonic bandgap substrate is introduced. The plane wave expansion method and the FDTD method were used to calculate such an antenna system. Numerical re-sults for the input return loss, radiation pattern, surface wave, and the directivity of the antennas are presented. A com-parison between the conventional patch antenna and the new PBG antenna is given. It is shown that the new PBG cover is very efficient for improving the radiation directivity. The physical reasons for the improvement are also given. |
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| Keywords: | Photonic bandgap cover Patch antenna FDTD Plane wave expansion method |
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