MULTI-BAND BALANCED ANTENNAS WITH ENHANCED STABILITY AND PERFORMANCE FOR MOBILE HANDSETS

具有增强的稳定性和性能的多频段平衡天线，适用于手机

• 批准号: EP/E022936/1
• 负责人: Raed Abd-Alhameed
• 金额: $ 21.35万
• 依托单位: University of Bradford
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2006
• 资助国家: 英国
• 起止时间: 2006 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FE022936%2F1
• 关键词: MULTI; BAND; BALANCED; ANTENNAS; ENHANCED

The move toward worldwide wireless communication continues at remarkable pace, and the antenna element of the technology is crucial to its success. Various mobile antenna structures have found increasing attention, significant characteristics being small size and low cost. However, the characteristics also need to be optimised with respect to the antenna radiation patterns and the Specific Absorption Rate (SAR) levels for compliance with international safety guidelines. Moreover, the antenna should have weak coupling with the body of the handset to provide the best performance stability and impedance matching in the presence of a human body, including the hand holding the handset. A good candidate is to use balanced antennas to reduce the effect of the mobile antenna on the handset, since unbalanced antennas drive current into the handset chassis, which interacts strongly with the unpredictable characterisitics of the body. The maximum specific absorption rate (SAR) values have been shown to be substantially reduced when placed next to the human head, compared with conventional unbalanced antennas, if these antennas are well-designed. The purpose of the study will be to design an antenna that will be developed using the Bradford hybrid electromagnetic modelling technique, allied to genetic algorithms to optimise the enhancement of the bandwidth. Multiple-band and wideband variants of these antennas for 2G, 3G, B3G and IEEE 802.x mobile bands will also be considered as a key target of the project.

全球无线通信的发展仍在以惊人的速度向前推进，而该技术的天线元素对其成功至关重要。各种移动天线结构越来越受到人们的关注，其显著特点是体积小、成本低。然而，为了符合国际安全准则，这些特性还需要根据天线辐射模式和特定吸收率（SAR）水平进行优化。此外，天线应与手机机身弱耦合，以便在人体存在的情况下（包括手持手机的人）提供最佳的性能稳定性和阻抗匹配。一个不错的选择是使用平衡天线来减少移动天线对手机的影响，因为不平衡天线会将电流驱动到手机机箱中，从而与机身的不可预测特性产生强烈的相互作用。与传统的非平衡天线相比，如果这些天线设计良好，放置在人的头部附近时，最大特定吸收率（SAR）值大大降低。这项研究的目的是设计一种天线，该天线将使用布拉德福德混合电磁建模技术，结合遗传算法来优化带宽的增强。这些天线用于2G、3G、B3G和IEEE 802的多频段和宽带变体。X移动频段也将被视为该项目的主要目标。

项目成果

Wireless Electromagnetic Radiation Assessment Based on the Specific Absorption Rate (SAR): A Review Case Study

• DOI: 10.3390/electronics11040511
• 发表时间: 2022-02-01
• 期刊: ELECTRONICS
• 影响因子: 2.9
• 作者: Abdul-Al, Mohamed;Amar, Ahmed S. I.;Abd-Alhameed, Raed A.
• 通讯作者: Abd-Alhameed, Raed A.

Study on on-Chip Antenna Design Based on Metamaterial-Inspired and Substrate-Integrated Waveguide Properties for Millimetre-Wave and THz Integrated-Circuit Applications

• DOI: 10.1007/s10762-020-00753-8
• 发表时间: 2020-10-26
• 期刊: JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES
• 影响因子: 2.9
• 作者: Alibakhshikenari, Mohammad;Virdee, Bal S.;Limiti, Ernesto
• 通讯作者: Limiti, Ernesto

Design of very compact combline band-pass filter for 5G applications

适用于 5G 应用的非常紧凑的梳状线带通滤波器的设计

• 发表时间: 2018
• 期刊: IET Conference Publications
• 作者: Al-Yasir Y.

Balanced antennas for mobile handset applications : simulation and measurement of balanced antennas for mobile handsets, investigating specific absorption rate when operated near the human body, and a coplanar waveguide alternative to the balanced feed

手机应用的平衡天线：手机平衡天线的模拟和测量，研究在人体附近操作时的比吸收率，以及平衡馈电的共面波导替代方案

• 发表时间: 2012
• 作者: Alhaddad Abdolrauf Gawad