Miniaturization of electromagnetic band gap structures for mobile applications

被引：7

作者：

Goussetis, G ^{[1
]}

Feresidis, AP ^{[1
]}

Palikaras, GK ^{[1
]}

Kitra, M ^{[1
]}

Vardaxoglou, JC ^{[1
]}

机构：

[1] Univ Loughborough, Dept Elect & Elect Engn, Loughborough LE11 3TU, Leics, England

来源：

RADIO SCIENCE | 2005年 / 40卷 / 06期

关键词：

D O I：

10.1029/2004RS003194

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It is well known that interference of the human body affects the performance of the antennas in mobile phone handsets. In this contribution, we investigate the use of miniaturized metallodielectric electromagnetic band gap (MEBG) structures embedded in the case of a mobile handset as a means of decoupling the antenna from the user's hand. The closely coupled MEBG concept is employed to achieve miniaturization of the order of 15:1. Full wave dispersion relations for planar closely coupled MEBG arrays are presented and are validated experimentally. The performance of a prototype handset with an embedded conformal MEBG is assessed experimentally and is compared to a similar prototype without the MEBG. Reduction in the detuning of the antenna because of the human hand by virtue of the MEBG is demonstrated. Moreover, the efficiency of the handset when loaded with a human hand model is shown to improve when the MEBG is in place. The improvements are attributed to the decoupling of the antenna from the user's hand, which is achieved by means of suppressing the fields in the locality of the hand.

引用

页数：8

共 10 条

[1] Electromagnetic bandgap antennas and components for microwave and (sub)millimeter wave applications [J].