Energy-Based Considerations for Ungrounded Wearable UHF Antenna Design

被引：24
|
作者：
Casula, Giovanni Andrea [1 ]
Michel, Andrea [2 ]
Montisci, Giorgio [1 ]
Nepa, Paolo [2 ]
Valente, Giuseppe [3 ]
机构：
[1] Univ Cagliari, Dipartimento Ingn Elettr & Elettron, I-09123 Cagliari, Italy
[2] Univ Pisa, Dept Informat Engn, I-56122 Pisa, Italy
[3] Italian Space Agcy, I-00133 Rome, Italy
来源：
IEEE SENSORS JOURNAL | 2017年 / 17卷 / 03期
关键词：
Wearable antennas; body-antenna coupling; ungrounded antennas; FABRICATION;
D O I：
10.1109/JSEN.2016.2636564
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The robustness of wearable UHF-band ungrounded antennas with respect to body-coupling effects is addressed. Two different configurations of single-layer antennas, with different energy density distributions, are presented, and a design criterion to improve their performance with respect to the antenna-body separation is derived. Through an analysis of the antenna electric and magnetic energy density distributions, it is shown that the degradation of the antenna performance due to the proximity of the human body can be reduced if the electric energy density is confined in specific regions far from the antenna border. The proposed design criterion has been validated by numerical simulations and experimental measurements.
引用
收藏
页码：687 / 694
页数：8
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