A Defected Ground Structure without Ground Contact Problem and Application to Branch Line Couplers
A new defected ground structure (DGS) microstrip line that is free from the ground contact problem is described together with its application example. The proposed DGS microstrip line adopts a double-layered substrate. The first layer contains the microstrip line and DGS patterns on the top and bott...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2013/232317 |
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| _version_ | 1849469149423599616 |
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| author | Jongsik Lim Dal Ahn Sang-Min Han Yongchae Jeong Haiwen Liu |
| author_facet | Jongsik Lim Dal Ahn Sang-Min Han Yongchae Jeong Haiwen Liu |
| author_sort | Jongsik Lim |
| collection | DOAJ |
| description | A new defected ground structure (DGS) microstrip line that is free from the ground contact problem is described together with its application example. The proposed DGS microstrip line adopts a double-layered substrate. The first layer contains the microstrip line and DGS patterns on the top and bottom planes as with the conventional DGS line. The second substrate, of which upper metal plane has already been removed, is attached to the bottom ground plane of the first layer. This structure prevents the ground plane of the first substrate with DGS patterns from making contact with the metal housing. The proposed DGS microstrip line has advantageous transmission and rejection characteristics, without the ground contact problem of DGS patterns, which has been a critical problem of previous DGS lines. A 10 dB branch line hybrid coupler is designed and measured, as an example of application of the proposed DGS microstrip line. |
| format | Article |
| id | doaj-art-f76a491fe94e4fffb71c68f5a7882307 |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-f76a491fe94e4fffb71c68f5a78823072025-08-20T03:25:35ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772013-01-01201310.1155/2013/232317232317A Defected Ground Structure without Ground Contact Problem and Application to Branch Line CouplersJongsik Lim0Dal Ahn1Sang-Min Han2Yongchae Jeong3Haiwen Liu4Soonchunhyang University, Asan, Chungnam 336-745, Republic of KoreaSoonchunhyang University, Asan, Chungnam 336-745, Republic of KoreaSoonchunhyang University, Asan, Chungnam 336-745, Republic of KoreaChonbuk National University, Jeonju, Chonbuk 561-756, Republic of KoreaEast China of Jiaotong University, Nanchang 330013, ChinaA new defected ground structure (DGS) microstrip line that is free from the ground contact problem is described together with its application example. The proposed DGS microstrip line adopts a double-layered substrate. The first layer contains the microstrip line and DGS patterns on the top and bottom planes as with the conventional DGS line. The second substrate, of which upper metal plane has already been removed, is attached to the bottom ground plane of the first layer. This structure prevents the ground plane of the first substrate with DGS patterns from making contact with the metal housing. The proposed DGS microstrip line has advantageous transmission and rejection characteristics, without the ground contact problem of DGS patterns, which has been a critical problem of previous DGS lines. A 10 dB branch line hybrid coupler is designed and measured, as an example of application of the proposed DGS microstrip line.http://dx.doi.org/10.1155/2013/232317 |
| spellingShingle | Jongsik Lim Dal Ahn Sang-Min Han Yongchae Jeong Haiwen Liu A Defected Ground Structure without Ground Contact Problem and Application to Branch Line Couplers International Journal of Antennas and Propagation |
| title | A Defected Ground Structure without Ground Contact Problem and Application to Branch Line Couplers |
| title_full | A Defected Ground Structure without Ground Contact Problem and Application to Branch Line Couplers |
| title_fullStr | A Defected Ground Structure without Ground Contact Problem and Application to Branch Line Couplers |
| title_full_unstemmed | A Defected Ground Structure without Ground Contact Problem and Application to Branch Line Couplers |
| title_short | A Defected Ground Structure without Ground Contact Problem and Application to Branch Line Couplers |
| title_sort | defected ground structure without ground contact problem and application to branch line couplers |
| url | http://dx.doi.org/10.1155/2013/232317 |
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