{"title":"Multiband Diversity Antenna Performance Study for Mobile Phones","authors":"Johan Avendal, Z. Ying, B. K. Lau","doi":"10.1109/IWAT.2007.370109","DOIUrl":null,"url":null,"abstract":"Spatial diversity is a popular multiple antenna system technique, due to its simplicity in implementation. However, its application has thus far been limited to systems where the electrical separation between adjacent antennas typically exceeds half a wavelength. This is because a more compact design induces higher antenna correlation and impedance mismatch, which results in lower diversity gains. In this paper, the performance of a compact multiband diversity antenna is investigated in both simulations and measurements. The dual-antenna structure is designed for the future WCDMA bands of WCDMA850, WCDMA1800 and 3G EU (UMTS), where the antenna separation at the WCDMA850 band is 0.24*wavelength. The measured results indicate that an average effective diversity gain of 7.3 dB at the 1% probability level can be achieved for the three bands.","PeriodicalId":446281,"journal":{"name":"2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications","volume":"10 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2007-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IWAT.2007.370109","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 9
Abstract
Spatial diversity is a popular multiple antenna system technique, due to its simplicity in implementation. However, its application has thus far been limited to systems where the electrical separation between adjacent antennas typically exceeds half a wavelength. This is because a more compact design induces higher antenna correlation and impedance mismatch, which results in lower diversity gains. In this paper, the performance of a compact multiband diversity antenna is investigated in both simulations and measurements. The dual-antenna structure is designed for the future WCDMA bands of WCDMA850, WCDMA1800 and 3G EU (UMTS), where the antenna separation at the WCDMA850 band is 0.24*wavelength. The measured results indicate that an average effective diversity gain of 7.3 dB at the 1% probability level can be achieved for the three bands.
空间分集技术是一种流行的多天线系统技术，由于其简单的实现。然而，到目前为止，它的应用仅限于相邻天线之间的电间隔通常超过半个波长的系统。这是因为更紧凑的设计会导致更高的天线相关性和阻抗失配，从而导致更低的分集增益。本文从仿真和测量两方面研究了一种小型多波段分集天线的性能。双天线结构是针对WCDMA850、WCDMA1800和3G EU (UMTS)的未来WCDMA频段设计的，其中WCDMA850频段的天线间隔为0.24*波长。测量结果表明，在1%的概率水平下，三个频段的平均有效分集增益可达7.3 dB。
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