Experimental verification of the far-field approximation for a mobile phone antenna

被引：2

作者：

Calabro, Emanuele ^{[1
,7
]}

Magazu, Salvatore ^{[1
,2
,3
,4
,5
,6
]}

机构：

[1] Messina Univ, Dept Math & Informat Sci Phys Sci & Earth Sci, Messina, Italy

[2] Le Studium, Loire Valley Inst Adv Studies, Orleans, France

[3] Le Studium, Loire Valley Inst Adv Studies, Tours, France

[4] CNRS, UPR 4301, CBM, Orleans 2, France

[5] Univ Orleans, CNRS, Lab Interfaces Confinement Mat & Nanostruct ICMN, UMR 7374, Orleans 2, France

[6] Ist Nazl Alta Matemat F Severi, GNFM, INDAM, Rome, Italy

[7] Ind Tech Inst Verona Trento Marconi, Messina, Italy

来源：

JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS | 2017年 / 31卷 / 14期

关键词：

Electromagnetic field; mobile phone; far-field approximation; microwave radiation; FTIR SPECTROSCOPY; NEAR-FIELD; IN-VITRO; EXPOSURE; RADIATION;

D O I：

10.1080/09205071.2017.1348999

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 aim of this study was to verify the validity of the far-field approximation for a mobile phone during a call. Typical models of mobile phones were used to measure the electromagnetic field emitted during a call at various distances from the mobile phone using a selective radiation meter Narda SRM 3000. The near-field and far-field theories were applied to obtained measurements. As a result, the far-field approximation could be applied also at a few centimeters from the mobile phone. Nevertheless, it resulted that the best accuracy of the application of the far-field approximation to mobile phones working is obtained at distances larger than 40cm, in agreement with the theoretic formulations relative to the condition that the antenna dimension is lesser than the wavelength of microwave radiation used by mobile phone working.

引用

页码：1421 / 1433

页数：13

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