| Comparison of Characteristics of Periodic and Non-Periodic Defected Ground Structures |
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| 作者姓名： | 李媛 栗换彩 丁荣林 |
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| 作者单位： | School of Electronic Information Engineering Tianjin University，School of Electronic Information Engineering Tianjin University，School of Electronic Information Engineering Tianjin University，Tianjin 300072 China Tianjin 300072 China Tianjin 300072 China |
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| 基金项目： | Supported by Natural Science Foundation of China(No.60371029). |
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| 摘 要： | * A defected ground structure (DGS), realized byetching defects in backside metal ground, is devel-oped froma photonic bandgap (PBG) structure. DGScan change the equivalentcircuitand therefore changethe transformation characteristic of a microstrip line. PBG structure is a kind of artificial crystal, inwhich one dielectric material arranges periodically inanother. This structure can prevent the propagation ofthe electromagnetic wave in a special frequency band.PBG structure has a verybroa…
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| 关 键 词： | PBG DGS 波纹 滤波器特性 |
| 收稿时间： | 2006-05-11 |
Comparison of Characteristics of Periodic and Non-Periodic Defected Ground Structures |
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| LI Yuan,LI Huancai,DING Ronglin.Comparison of Characteristics of Periodic and Non-Periodic Defected Ground Structures[J].Transactions of Tianjin University,2006,12(5):387-390. |
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| Authors: | LI Yuan LI Huancai DING Ronglin |
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| Abstract: | The filter characteristic of defected ground structure (DGS) is analyzed and the equivalent circuit of C-shaped DGS is extracted. The characteristics of non-periodic and periodic DGS with different dimensions are compared. Then the DGS is simulated and optimized with software, and the circuit board is manufactured and measured.The non-periodic structure is simple in structure and small in size and ripple compared with the periodic structure.Though the stop band of the non-periodic structure is narrow, it can meet the requirement of application. The C-shaped structure with two stop bands can select frequency in a special band. |
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| Keywords: | photonic bandgap (PBG) defected ground structure (DGS) ripple |
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