{"title":"单极天线不同波导结构缺陷的比较分析","authors":"S. J. Chin, M. Aziz, M. R. Ahmad","doi":"10.1109/PIERS-FALL.2017.8293355","DOIUrl":null,"url":null,"abstract":"This paper presents different Defected Waveguide Structures (DWS) towards monopole antenna in Ultrawideband (UWB) frequencies. Monopole antenna is one of the potential candidate for UWB applications. Yet, it has poor directivity and gain due to low profile. Previous studies have made change on the configuration of monopole antenna itself to enhance gain. This paper proposes Defected Waveguide Structure to design externally with monopole antenna without reconfiguring monopole antenna. The waveguide is designed according dimension of monopole antenna. DWS waveguide is designed to have square, circle and spiral shapes in patch. Monopole antenna will act as input to those waveguides. The effects of different DWS waveguides towards monopole antenna will be investigated through antenna parameters. Meanwhile, the performances of DWS waveguides will be also analyzed through transmission coefficient (S21) by setting two monopole antennas at the both open-ended surfaces of waveguide. In overall, monopole antenna achieves wide bandwidth of 8.54 GHz and highest efficiency. Monopole antenna with waveguide achieves narrow bandwidth of 2.76 GHz and low efficiency. Yet, it improves directivity obviously at 2GHz–7 GHz. Monopole antenna with all the DWS waveguide still maintain wide bandwidth of 8.6 GHz at the same time improve directivity and gain. Monopole antenna with square DWS waveguide shows highest directivity and gain at 2GHz–8.5 GHz. Monopole antenna with circle DWS waveguide demonstrates highest directivity and gain at 9GHz–10GHz. Monopole antenna with spiral DWS waveguide shows highest efficiency compares to others DWS waveguide.","PeriodicalId":39469,"journal":{"name":"Advances in Engineering Education","volume":"13 1","pages":"1428-1436"},"PeriodicalIF":0.0000,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Comparative analysis of different defected waveguide structures towards monopole antenna\",\"authors\":\"S. J. Chin, M. Aziz, M. R. Ahmad\",\"doi\":\"10.1109/PIERS-FALL.2017.8293355\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper presents different Defected Waveguide Structures (DWS) towards monopole antenna in Ultrawideband (UWB) frequencies. Monopole antenna is one of the potential candidate for UWB applications. Yet, it has poor directivity and gain due to low profile. Previous studies have made change on the configuration of monopole antenna itself to enhance gain. This paper proposes Defected Waveguide Structure to design externally with monopole antenna without reconfiguring monopole antenna. The waveguide is designed according dimension of monopole antenna. DWS waveguide is designed to have square, circle and spiral shapes in patch. Monopole antenna will act as input to those waveguides. The effects of different DWS waveguides towards monopole antenna will be investigated through antenna parameters. Meanwhile, the performances of DWS waveguides will be also analyzed through transmission coefficient (S21) by setting two monopole antennas at the both open-ended surfaces of waveguide. In overall, monopole antenna achieves wide bandwidth of 8.54 GHz and highest efficiency. Monopole antenna with waveguide achieves narrow bandwidth of 2.76 GHz and low efficiency. Yet, it improves directivity obviously at 2GHz–7 GHz. Monopole antenna with all the DWS waveguide still maintain wide bandwidth of 8.6 GHz at the same time improve directivity and gain. Monopole antenna with square DWS waveguide shows highest directivity and gain at 2GHz–8.5 GHz. Monopole antenna with circle DWS waveguide demonstrates highest directivity and gain at 9GHz–10GHz. Monopole antenna with spiral DWS waveguide shows highest efficiency compares to others DWS waveguide.\",\"PeriodicalId\":39469,\"journal\":{\"name\":\"Advances in Engineering Education\",\"volume\":\"13 1\",\"pages\":\"1428-1436\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2017-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advances in Engineering Education\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/PIERS-FALL.2017.8293355\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"Social Sciences\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in Engineering Education","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PIERS-FALL.2017.8293355","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Social Sciences","Score":null,"Total":0}
Comparative analysis of different defected waveguide structures towards monopole antenna
This paper presents different Defected Waveguide Structures (DWS) towards monopole antenna in Ultrawideband (UWB) frequencies. Monopole antenna is one of the potential candidate for UWB applications. Yet, it has poor directivity and gain due to low profile. Previous studies have made change on the configuration of monopole antenna itself to enhance gain. This paper proposes Defected Waveguide Structure to design externally with monopole antenna without reconfiguring monopole antenna. The waveguide is designed according dimension of monopole antenna. DWS waveguide is designed to have square, circle and spiral shapes in patch. Monopole antenna will act as input to those waveguides. The effects of different DWS waveguides towards monopole antenna will be investigated through antenna parameters. Meanwhile, the performances of DWS waveguides will be also analyzed through transmission coefficient (S21) by setting two monopole antennas at the both open-ended surfaces of waveguide. In overall, monopole antenna achieves wide bandwidth of 8.54 GHz and highest efficiency. Monopole antenna with waveguide achieves narrow bandwidth of 2.76 GHz and low efficiency. Yet, it improves directivity obviously at 2GHz–7 GHz. Monopole antenna with all the DWS waveguide still maintain wide bandwidth of 8.6 GHz at the same time improve directivity and gain. Monopole antenna with square DWS waveguide shows highest directivity and gain at 2GHz–8.5 GHz. Monopole antenna with circle DWS waveguide demonstrates highest directivity and gain at 9GHz–10GHz. Monopole antenna with spiral DWS waveguide shows highest efficiency compares to others DWS waveguide.
期刊介绍:
The journal publishes articles on a wide variety of topics related to documented advances in engineering education practice. Topics may include but are not limited to innovations in course and curriculum design, teaching, and assessment both within and outside of the classroom that have led to improved student learning.