{"title":"手机用紧凑平衡折叠偶极子天线的宽带特性","authors":"M. Hirayama, Jun Itou, H. Morishita","doi":"10.1109/ANTEM.2010.5552543","DOIUrl":null,"url":null,"abstract":"Recently the services (LTE, Bluetooth, W-LAN, WiMAX, Digital TV Reception) for the cellular phone are increasing. So the wider bandwidth antenna for handsets is required. In addition, built-in antennas become normal. In our previous paper [1] [2], in order to make a small size and lower profile antenna for handsets, the built-in folded dipole antenna (BFDA) and U-shaped folded dipole antenna (UFDA) have been introduced and analyzed. Those antennas can be built in a small volume and placed very close to the rectangular ground plane (GP), which represents a shielding plate used in the handset unit, because they have a folded structure and high radiation resistance. In a result, the relative bandwidths of BFDA and UFDA for VSWR≤2 are approximately 39.3% and 35.6%, respectively. In this paper, more compact balanced-fed folded dipole antenna (CBFDA) based on UFDA is proposed and its characteristics are analyzed.","PeriodicalId":161657,"journal":{"name":"2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference","volume":"83 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2010-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Wideband characteristics of compact balanced folded dipole antenna for handsets\",\"authors\":\"M. Hirayama, Jun Itou, H. Morishita\",\"doi\":\"10.1109/ANTEM.2010.5552543\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Recently the services (LTE, Bluetooth, W-LAN, WiMAX, Digital TV Reception) for the cellular phone are increasing. So the wider bandwidth antenna for handsets is required. In addition, built-in antennas become normal. In our previous paper [1] [2], in order to make a small size and lower profile antenna for handsets, the built-in folded dipole antenna (BFDA) and U-shaped folded dipole antenna (UFDA) have been introduced and analyzed. Those antennas can be built in a small volume and placed very close to the rectangular ground plane (GP), which represents a shielding plate used in the handset unit, because they have a folded structure and high radiation resistance. In a result, the relative bandwidths of BFDA and UFDA for VSWR≤2 are approximately 39.3% and 35.6%, respectively. In this paper, more compact balanced-fed folded dipole antenna (CBFDA) based on UFDA is proposed and its characteristics are analyzed.\",\"PeriodicalId\":161657,\"journal\":{\"name\":\"2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference\",\"volume\":\"83 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2010-07-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ANTEM.2010.5552543\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ANTEM.2010.5552543","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Wideband characteristics of compact balanced folded dipole antenna for handsets
Recently the services (LTE, Bluetooth, W-LAN, WiMAX, Digital TV Reception) for the cellular phone are increasing. So the wider bandwidth antenna for handsets is required. In addition, built-in antennas become normal. In our previous paper [1] [2], in order to make a small size and lower profile antenna for handsets, the built-in folded dipole antenna (BFDA) and U-shaped folded dipole antenna (UFDA) have been introduced and analyzed. Those antennas can be built in a small volume and placed very close to the rectangular ground plane (GP), which represents a shielding plate used in the handset unit, because they have a folded structure and high radiation resistance. In a result, the relative bandwidths of BFDA and UFDA for VSWR≤2 are approximately 39.3% and 35.6%, respectively. In this paper, more compact balanced-fed folded dipole antenna (CBFDA) based on UFDA is proposed and its characteristics are analyzed.
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