The effect of human presence on signal power received at a TETRA handheld device

Author

Asimakopoulos, A.G. ; Rittas, N.E. ; Xenikos, D.G. ; Polydoros, P.I. ; Constantinou, P.

Author_Institution

Mobile Radio-Commun. Lab., Nat. Tech. Univ. of Athens, Greece

Volume

2

fYear

2004

fDate

18-20 May 2004

Firstpage

1097

Abstract

The attenuation of the radio signal in the nearfield of a TETRA handheld device due to the presence of human body is measured. By including a confidence margin for the mean and the standard deviation of the measurements we find in open area 8.4 dB attenuation when the handheld device is at talking position close to the head and 19.3 dB when it is placed at the belt. In an urban environment the corresponding values are 11.2 and 9.2 dB, respectively. Detailed measurements are presented and discussed.

Keywords

biological effects of radiation; cellular radio; digital radio; electromagnetic wave absorption; health hazards; losses; mobile handsets; signal detection; telecommunication equipment testing; TETRA cellular digital communications system; TETRA handheld device; belt position; confidence margin; human presence effect; open area; radio signal attenuation; received signal power; standard deviation; statistical mean; talking position; urban environment; Area measurement; Attenuation; Base stations; Handheld computers; Humans; Laboratories; Portable computers; Position measurement; Scattering; Urban areas;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2004. IMTC 04. Proceedings of the 21st IEEE

ISSN

1091-5281

Print_ISBN

0-7803-8248-X

Type

conf

DOI

10.1109/IMTC.2004.1351254

Filename

1351254