T-matched dipole antenna integrated in electrically small body-worn wireless sensor node

被引：5
|
作者：
Cheng, S. [1 ]
Hallbjorner, P. [1 ,2 ]
Rydberg, A. [1 ]
Vanotterdijk, D. [3 ]
van Engen, P. [3 ]
机构：
[1] Uppsala Univ, Signals & Syst Grp, Uppsala, Sweden
[2] SP Tech Res Inst Sweden, Boras, Sweden
[3] Philips Appl Technol, Eindhoven, Netherlands
来源：
IET MICROWAVES ANTENNAS & PROPAGATION | 2009年 / 3卷 / 05期
关键词：
D O I：
10.1049/iet-map.2008.0218
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：
A 2.4 GHz antenna for an electrically small body-worn sensor node is presented. Usually, unbalanced antennas are used in such applications. Implementing a balanced antenna in a small node deployed on the body is problematic from the points of view of both design and characterisation. A solution using a T-matched dipole integrated in the node housing is presented. Techniques for characterisation both in free space and on the body are described. Besides antenna port impedance and radiation efficiency, radiated power and radiation patterns of the active antenna fed by a transceiver in a fully functional sensor node are measured. The benefits and drawbacks of the chosen antenna design and characterisation techniques are discussed.
引用
收藏
页码：774 / 781
页数：8
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