DocumentCode :
3212168
Title :
The effects of a nearby biological body on the parameters of a small hand-held radio operating in the H.F. band (3MHz-30MHz)
Author :
Cooper, Richard M. ; Radcliff, Roger
Author_Institution :
ECE Dept., Ohio Univ., Athens, OH, USA
fYear :
1993
fDate :
7-9 Mar 1993
Firstpage :
24
Lastpage :
28
Abstract :
The effects of a nearby biological body on the efficiency and radiation patterns of a small hand-held radio operating in the H.F. band are determined by computer modeling. The close proximity of the radio operator´s body results in the scattered field from the body reradiating and perturbing the known free-space current distribution in the antennas to some extent. However, due to the extremely small electrical size of the radiating system, this body-to-radio coupling is assumed to be minimal and henceforth neglected. Thus, a direct moment method is used to solve a volumetric electric field integral equation with the near field of the radio as the excitation field. Once the equivalent volumetric currents are determined, the efficiency and radiation patterns are found using these currents and the unperturbed free space current of the radio antenna
Keywords :
antenna radiation patterns; current distribution; dipole antennas; integral equations; method of moments; mobile antennas; mobile radio; telecommunication computing; 3 to 30 MHz; HF band; computer modeling; direct moment method; efficiency; equivalent volumetric currents; free-space current distribution; radiation patterns; radio antenna; radio operator´s body; scattered field; small hand-held radio; volumetric electric field integral equation; Antenna radiation patterns; Biological system modeling; Biology computing; Current distribution; Dipole antennas; Electromagnetic scattering; Handheld computers; Integral equations; Moment methods; National electric code;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
System Theory, 1993. Proceedings SSST '93., Twenty-Fifth Southeastern Symposium on
Conference_Location :
Tuscaloosa, AL
ISSN :
0094-2898
Print_ISBN :
0-8186-3560-6
Type :
conf
DOI :
10.1109/SSST.1993.522735
Filename :
522735
Link To Document :
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